OLinuXino-MAXI
Open-source single-board Linux computer
USER’S MANUAL
Revision L, March 2013
Designed by OLIMEX Ltd, 2012
All boards produced by Olimex LTD are ROHS compliant
OLIMEX© 2012 OLinuXino-MAXI user's manual
DISCLAIMER
© 2012 Olimex Ltd. Olimex®, logo and combinations thereof, are registered trademarks of Olimex Ltd.
Other product names may be trademarks of others and the rights belong to their respective owners.
The information in this document is provided in connection with Olimex products. No license, express
or implied or otherwise, to any intellectual property right is granted by this document or in connection
with the sale of Olimex products.
The Hardware project is released under the Creative Commons Attribution-Share Alike 3.0 United States
License. You may reproduce it for both your own personal use, and for commertial use. You will have to
provide a link to the original creator of the project http://www.olimex.com on any documentation or website.
You may also modify the files, but you must then release them as well under the same terms. Credit can be
attributed through a link to the creator website: http://www.olimex.com
The software is released under GPL.
It is possible that the pictures in this manual differ from the latest revision of the board.
The product described in this document is subject to continuous development and improvements. All
particulars of the product and its use contained in this document are given by OLIMEX in good faith.
However all warranties implied or expressed including but not limited to implied warranties of
merchantability or fitness for purpose are excluded. This document is intended only to assist the reader in the
use of the product. OLIMEX Ltd. shall not be liable for any loss or damage arising from the use of any
information in this document or any error or omission in such information or any incorrect use of the
product.
This evaluation board/kit is intended for use for engineering development, demonstration, or evaluation
purposes only and is not considered by OLIMEX to be a finished end-product fit for general consumer use.
Persons handling the product must have electronics training and observe good engineering practice
standards. As such, the goods being provided are not intended to be complete in terms of required design-,
marketing-, and/or manufacturing-related protective considerations, including product safety and
environmental measures typically found in end products that incorporate such semiconductor components or
circuit boards.
Olimex currently deals with a variety of customers for products, and therefore our arrangement with the user
is not exclusive. Olimex assumes no liability for applications assistance, customer product design, software
performance, or infringement of patents or services described herein.
THERE IS NO WARRANTY FOR THE DESIGN MATERIALS AND THE
COMPONENTS USED TO CREATE OLINUXINO. THEY ARE CONSIDERED
SUITABLE ONLY FOR OLINUXINO.
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Table of Contents
DISCLAIMER ..................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . 2
CHAPTER 1: OVERVIEW .............................................................................. . . . . . . . . . . 5
1. Introduction to the chapter .......................................................................................... . . . . . . . . . . . . . 5
1.1 Features .................................................................................................................................. . . . 5
1.2 The OLinuXino family .................................................................................. . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Target market and purpose of the board ........................................................................ . . . . . . . 6
1.3 Organization ..................................................................................................................... . . . . . . . . 7
CHAPTER 2: SETTING UP THE OLINUXINO BOARD ................... . . . . . . . . . . . . . . . . . . 8
2. Introduction to the chapter .......................................................................................... . . . . . . . . . . . . . 8
2.1 Electrostatic warning ........................................................................................................ . . . . . . . 8
2.3 Requirements ............................................................................................. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Powering the board .............................................................................................................. . . . . 9
2.5 Prebuilt software ........................................................................................................ . . . . . . . . . . . . 10
2.6 Using BitBurner ................................................................................................... . . . . . . . . . . . . . . . . . . 10
2.7 Building the Linux image ........................................................................................ . . . . . . . . . . . . . . 12
2.8 How to blink the LED ........................................................................................................ . . . . 14
2.9 How setup the I2C, SPI, UART .......................................................................... . . . . . . . . . . . . . . . . . . 15
2.10 How to setup Arch-Linux distribution ..................................................................... . . . . . . . . . 15
2.11 How to use a custom Wi-Fi dongle based on RealTek RTL8188CUS and ............... . . . . . . . 19
RTL8192CU under ARCH Linux ........................................................................................... . . . . 19
3. Introduction to the chapter ........................................................................................ . . . . . . . . . . . . . 24
3.1 Layout (top view) .............................................................................................. . . . . . . . . . . . . . . . . . . . . . 24
CHAPTER 4: THE iMX233 MICROCONTROLLER ....... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4. Introduction to the chapter ........................................................................................ . . . . . . . . . . . . . 25
4.1 The microcontroller ............................................................................................. . . . . . . . . . . . . . . . . . . 25
CHAPTER 5: CONTROL CIRCUITY ............................................... . . . . . . . . . . . . . . . . . . . . 28
5. Introduction to the chapter ........................................................................................ . . . . . . . . . . . . . 28
5.1 Reset ...................................................................................................................... . . . . . . . . . . . . . . . . . . 28
5.2 Clocks ........................................................................................................................... . . . . . . . . . . . 28
5.3 Power supply circuit ........................................................................................ . . . . . . . . . . . . . . . . . . . . . . 28
CHAPTER 6: CONNECTORS AND PINOUT ............................... . . . . . . . . . . . . . . . . . . . . . . . 31
6. Introduction to the chapter ........................................................................................ . . . . . . . . . . . . . 31
6.1 Debugging interfaces ..................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . 31
6.1.1 UART debug ............................................................................................................. . . . . . . . . . . . 32
6.1.2 SJTAG debug ............................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.1.3 Classic JTAG debug ......................................................................................................... . . . 33
6.2 SD/MMC slot .................................................................................................................. . . . . . . . . 35
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6.3 UEXT module ................................................................................................................... . . . . . . 36
6.4 GPIO (General Purpose Input/Output) 40pin connector .......................... . . . . . . . . . . . . . . . . . . . . . . . 37
6.5 USB HOSTs ................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.6 LAN connector ..................................................................................................... . . . . . . . . . . . . . . . . . . 42
6.7 PWR Jack ............................................................................................................. . . . . . . . . . . . . . . . . . . 42
6.8 Headphones and line-in connector ...................................................................... . . . . . . . . . . . . . . . . . 43
6.9 Battery connector .............................................................................................................. . . . . . 44
6.10 Composite video connector ............................................................................ . . . . . . . . . . . . . . . . . . . . . 44
6.11 Boot mode positions ........................................................................................ . . . . . . . . . . . . . . . . . . . . . 45
6.12 Jumper description ............................................................................................. . . . . . . . . . . . . . . . . . 46
6.12.1 SCL_SW/SCL_HW and SDA_SW/SDA_HW ............................................................. . . . 46
6.12.2 5V_E ........................................................................................................................ . . . . . . . . . . . 47
6.12.3 3.3V_E and 3.3VIO_E jumpers ......................................................................... . . . . . . . . . . . . . . 47
6.12.4 Boot mode selecting jumpers ...................................................................... . . . . . . . . . . . . . . . . . . . . . 47
6.13 Additional hardware components ............................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.14 Accessories .......................................................................................................... . . . . . . . . . . . . . . . . . . 48
6.14.1 USB-SERIAL-CABLE-F ................................................................................................. . 48
CHAPTER 7: BLOCK DIAGRAM AND MEMORY .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7. Introduction to the chapter ........................................................................................ . . . . . . . . . . . . . 49
7.1 Memory addresses ...................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.2 Processor block diagram .................................................................................... . . . . . . . . . . . . . . . . . . . 50
7.3 Physical memory map ............................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
CHAPTER 8: SCHEMATICS ........................................................................... . . . . . . . 52
8. Introduction to the chapter ........................................................................................ . . . . . . . . . . . . . 52
8.1 Eagle schematic ....................................................................................................... . . . . . . . . . . . . . . . 52
8.2 Physical dimensions ............................................................................................. . . . . . . . . . . . . . . . . . . 54
CHAPTER 9: REVISION HISTORY AND SUPPORT ...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
9. Introduction to the chapter ........................................................................................ . . . . . . . . . . . . . 55
9.1 Document revision ...................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
9.2 Board revision ................................................................................................. . . . . . . . . . . . . . . . . . . . . . . . 58
9.3 Useful web links and purchase codes ............................................................... . . . . . . . . . . . . . . . . . . . . 59
9.3 Product support ........................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . 60
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CHAPTER 1: OVERVIEW
1. Introduction to the chapter
Thank you for choosing the OLinuXino single board computer from Olimex! This document
provides a user’s guide for the Olimex OLinuXino board. As an overview, this chapter gives the
scope of this document and lists the board’s features. The differences between the members of the
OLinuXino family are mentioned. The document’s organization is then detailed.
The OLinuXino development board enables code development of applications running on the
microcontroller i.MX233, manufactured by FreeScale Semiconductor.
OLinuXino is an open-source, open-hardware project and all documentation is available to the
customer.
1.1 Features
• iMX233 ARM926J processor at 454Mhz
• 64 MB RAM
• SD-card connector for booting the Linux image
• TV PAL/NTSC video output
• 3 USB High Speed Host
• optional WIFI RTL8188CU module
• Stereo Audio Input
• Stereo Headphones Audio Output
• two Buttons
• UEXT connector for connection of different peripherial modules
• 40 pin GPIO for connection of other hardware
• Board is in shape for fit inside Pactec JM42 plastic box
http://www.pactecenclosures.com/pdfs/drw_JM-42.pdf
• Power supply input 6-16VDC
• PCB dimensions: 3.70'' x 2.15'' (94.0mm x 54.6mm)
• Nominal dimensions: 3.70'' x 2.65'' (94.0mm x 67.3mm)
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1.2 The OLinuXino family
Table of comparison
OLinuXino-MICRO OLinuXino-MINI OLinuXino-MAXI
Processor iMX233 @ 454Mhz iMX233 @ 454Mhz iMX233 @ 454Mhz
Ram [MB] 64 64 64
# USB hosts 1 3 2
100/150 Mbit No/WIFI option** No/WIFI option*** Yes/WIFI option**
Ethernet*
GPIO connector 60pins 40pins 40pins
# Buttons 3 2 2
Reset button Yes Yes Yes
DC power supply 5V 6V-16V 6V-16V
Dimensions 3.40'' x 1.70'' 3.70'' x 2.65'' 3.70'' x 2.65''
Breadboarding Yes No No
Audio IN connector No Yes Yes
Audio OUT connector No Yes Yes
UEXT connector No Yes Yes
* 100Mbit Ethernet for the wired network of OLinuXino-MAXI. 150Mbit for the WIFI following
811.02n standard.
** All three boards have the option to work with MOD-WIFI_RTL8188, which is USB WIFI
modem with RTL8188CU chip and can be purchased separately. MOD-WIFI_RTL8188 can be
connected to any of the OLinuXino boards via the USB.
*** OLinuXino-MINI has additional option of having RTL8188CU hardware mounted! If you wish
RTL8188CU embedded in the device you should purchase OLinuXino-MINI-WIFI. Choosing the
embedded WIFI option will leave your USB-HOSTs available for use.
1.2 Target market and purpose of the board
The boards from the OLinuXino family are ready to use, easy to setup and are suitable for
embedded programming enthusiasts, Linux hobbyists, gadget fans and also professionals (since its
low cost makes it very good solution for application orientated embedded systems). The main usage
of the board is software embedded development without the urge of understanding perfectly the
hardware.
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The strong points of the boards are the processor speed, the mobility of the board and the low price.
Customers have full access to the technical documentation of the board. The software is released
under General Purpose License and the board is considered open-hardware.
1.3 Organization
Each section in this document covers a separate topic, organized as follow:
– Chapter 1 is an overview of the board usage and features
– Chapter 2 provides a guide for quickly setting up the board and software notes
– Chapter 3 contains the general board diagram and layout
– Chapter 4 describes the component that is the heart of the board: the iMX233
microcontroller
– Chapter 5 is an explanation of the control circuitry associated with the microcontroller to
reset. Also shows the clocks on the board
– Chapter 6 covers the connector pinout, peripherals and jumper description
– Chapter 7 shows the memory map
– Chapter 8 provides the schematics
– Chapter 9 contains the revision history, useful links and support information
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CHAPTER 2: SETTING UP THE OLINUXINO BOARD
2. Introduction to the chapter
This section helps you set up the OLinuXino development board for the first time. Please consider
first the electrostatic warning to avoid damaging the board, then discover the hardware and software
required to operate the board.
The procedure to power up the board is given, and a description of the default board behavior is
detailed.
2.1 Electrostatic warning
OLinuXino is shipped in a protective anti-static package. The board must not be exposed to high
electrostatic potentials. A grounding strap or similar protective device should be worn when
handling the board. Avoid touching the component pins or any other metallic element.
2.3 Requirements
In order to set up the OLinuXino optimally, the following items are required:
- 6V to 16V source of power with 1A maximum amperage.
- SJTAG interface programmer
- USB keyboard
- Monitor with composite interface or Personal Computer + USB-SERIAL-CABLE
- SD card with Linux image
Note that the board arrives without SD card or Linux image. You can purchase a card with Linux
separately. It is recommended that the user has basic Linux experience.
Some of the suggested items can be purchased by Olimex, for instance:
iMX233-OLinuXino-SD - SD card with the Linux image
USB-SERIAL-CABLE-F - USB serial console cable female (check “6.1.1 UART Debug” for info
how to connect it to the board)
SY0612E - power supply adapter 12V/0.5A for iMX233-OLinuXino-Maxi
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2.4 Powering the board
The board is powered either via the PWR jack or via a battery. It should be supplied from a 6V to
16V source with maximum current of 1A from the power jack.
All measures below are taken at 10V.
If measuring the current consumption it should be around 0.06A before initializing all the
peripherals. The consumption raises to 0.12A without LAN and USB hosts initialized and Linux
running. The consumption goes up 0.15A with the Linux running when LAN and both USB hosts
initialized.
If you have a standard USB flash drive attached to a USB host, Linux and LAN running the typical
consumption is around 0.20A.
When powered by the typical 3.7V battery the LAN and USB-hosts will be powered-off if you use
the external 3.3V DC-DC (they will stil work if using the internal in the processor DC-DC). The
consumption from the battery when Linux is running is around 0.75A.
IMPORTANT! We discovered a situation which might leave some of the SD cards (iMX233-
OLinuXino-SD) in unrecoverable state when powering OLinuXino-MICRO. The problem
might occur if two specific conditions are met simultaneously:
1)Plugged iMX233-OLinuXino-SD micro SD card with holographic sticker on its back side
(some of the cards we have distributed are from a brand that places holographic sticker on
their backs, the other half lack such a sticker)
2)Plugged USB-SERIAL-CABLE-F at the moment when powering the board
If you happen to have received SD card with holographic sticker on its back side and you use
it with OLinuXino-MICRO and you plug USB-SERIAL-CABLE and then you power the
board there is a chance of malfunction of the SD card.
There are two possible workarounds to protect the SD card. The first one is simpler and the
second one requires some soldering experience.
Workaround 1: First insert the iMX233-OLinuXino-SD card and then power the board (and
if powering the board from a battery also press the PWR button). Wait 4-5 seconds and then
connect the USB-SERIAL-CABLE-F. After the initial power-up it is safe to use the reset
button.
Workaround 2: You will need a Shottky diode. The Shottky should be soldered on the USB-
SERIAL-CABLE-F TX line/wire (RED cable) with anode towards the board.
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When you power the board by battery you have to press the PWR_BUT to start the board.
If you start Linux and it is already running no matter which powering method you use
(PWR_JACK or BAT) pressing the PWR_BUT will put the Linux in power-save mode.
When you power the board by battery you have to press the PWR_BUT to start the board.
If you start Linux and it is already running no matter which powering method you use
(PWR_JACK or BAT) pressing the PWR_BUT will put the Linux in power-save mode.
For the European customers we sell a power supply adapter 12V/0.5A - SY0612E.
2.5 Prebuilt software
Note that the boards arrive without Linux or SD card. The Linux image can be purchased
separately on a SD card or you can built and adjust it yourself.
When we program the boards we change the default position of the following HW_OCOTP_ROM0
fuses of the processor:
SD_MBR_BOOT(3) - Blown
SD_POWER_GATE_GPIO(21:20) – 10-PWM3
For burning the fuse position we use the BitBurner software. This operation is discussed in details
before. Proceed with great caution when burning fuses since it is irreversible operation.
The first batches of the board and the SD-card used the Debian Linux image. After that we switched
over to ArchLinux for the ease of the package manager. Instructions how to build the ArchLinux
can be found at the gitHub address of OLinuXino.
2.6 Using BitBurner
IMPORTANT! MODIFYING THE FUSES IS IRREVERSIBLE PROCESS! BURNING THE
WRONG FUSES MIGHT DAMAGE OLINUXINO IRREVERSIBLY! BURNING WRONG
FUSES MIGHT CAUSE BOOT PROBLEMS!
BURN FUSES AT OWN RISK!
The bit burning is done via the USB of the computer connected to the OLINUXINO board and the
BitBurner software. To be able to burn the fuses you will need to make a custom cable that connects
a USB with the 3 pin holes found at the bottom of the board named “GND”, “DP”, “DM” (check
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the picture below for a better view how the three wires must be connected.
After soldering the three wires you can place a marker on each of them or use colored wires to be
able to distinguish them. You can also use some gel to keep them tight on the USB connector. On
the opposite side of the cables you might place 50mil (1.27mm) male connector following the order
of the signals. Please also restrain from using wires longer than 20 cm since that might make the
connection unreliable.
Download BitBurner from https://www.olimex.com/dev/OLINUXINO/iMX233-
OLINUXINO/BitBurner.v1.0.4.6.zip. Extract it and start the .exe. If you connect everything you
should see and choose HID-compilant device from the “Select device” drop-down menu.
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2.7 Building the Linux image
Note that building the Linux image from scratch is a time-consuming task. Even with powerful
machine and fast internet connection it might take few hours compiling. Some Linux distributions
might lack the tools required to compile/build/execute scripts/download from repository – how to
get those is not discussed below.
The Linux image is created and downloaded from https://github.com/Freescale/fsl-community-bsp-
platform. For the test here we used Debian 6.0 with GNOME visual libraries. The steps we did:
1) From the terminal created folder “bin” in home folder:
user@dist$: mkdir bin
user@dist$: cd bin
Add bin directory to PATH in order to do the next steps easier. Else navigate to the right folders.
2) Installed `repo` utility needed for the bitbake file fetching from the repository:
user@dist$: curl https://dl-ssl.google.com/dl/googlesource/git-repo/repo > ~/bin/repo
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user@dist$: chmod a+x ~/bin/repo
3) Created directory for the project and download the BSP source from the git repository:
user@dist$: mkdir fsl-community-bsp
user@dist$: cd fsl-community-bsp
~/fsl-community-bsp$: repo init -u https://github.com/Freescale/fsl-community-bsp-platform -b
denzil
~/fsl-community-bsp$: repo sync
4) You can change the settings for the build if you want at fsl-community-bsp/build/conf/local.conf.
I changed the “machine” name to “imx233-olinuxino-maxi”.
For Linux kernel configurations and settings you can do (of course you can use also the default
settings):
~/fsl-community-bsp$:. ./setup-environment build
~/fsl-community-bsp/build$:bitbake linux-imx -c menuconfig
Check the image below:
5) Now to start building the image:
~fsl-community-bsp$:. ./setup-environment build
~fsl-community-bsp/build $: bitbake core-image-minimal
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Note: on different Linux distributions you might have different tools installed and you will probably
need to install dependencies needed for the compile/build scripts. Here are some (but not all) of the
mandatory ones: G++; diffstat; texi2html; chrpath; gawk; texinfo; some git client.
To ensure you have the latest version supported with all the updates visit
https://github.com/OLIMEX/OLINUXINO and https://github.com/Freescale/fsl-community-bsp-
platform.
2.8 How to blink the LED
In this sub-chapter you will find a way to achieve the most basic task in electronics – the “Hello
World” of electronics - blinking the LED.
First we set the pin responsible for the LED as an output and we can set its value manually to high
or low position – make it blink manually. The LED mounted on the board uses GPIO65. You can
use external diode instead of the one mounted - you have to look at the table “The Linux
implementation of pins” in the hardware section to get the correct linux name for the GPIO pin.
echo out > /sys/class/gpio/gpio65/direction
echo 1 > /sys/class/gpio/gpio65/value
If you want to set the blink off you should change the value on the second line to:
echo 0 > /sys/class/gpio/gpio65/value
To show the info for all GPIOs:
ls /sys/class/gpio
To make it turn on – turn off automatically (e.g. blink) we use the text redactor VI to write the
Linux script:
echo out > /sys/class/gpio/gpio65/direction
while true
do
echo 1 > /sys/class/gpio/gpio65/value
sleep 1
echo 0 > /sys/class/gpio/gpio65/value
sleep 1
done
We save it as as “gpio” and we make it executable with
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chmod +x gpio
then we execut the script with:
./gpio
The LED should start blinking with 0.5Hz.
2.9 How setup the I2C, SPI, UART
There are number of examples with our extension module board to achieve those connections on the
UEXT. The examples might be used as an example for I2C, SPI or UART communication. You can
find them at our GitHub page:
https://github.com/OLIMEX/OLINUXINO/tree/master/SOFTWARE/iMX233
NOTE that to use software I2C you have to set the SMD jumpers to the proper side. By default the
board uses hardware I2C.
2.10 How to setup Arch-Linux distribution
This is a step-by-step guide for building the Archlinux image for Olimex OLinuXino-MAXI. The
second and the third part of the document explain how to setup the internet connection on the board
and how to use the GCC compiler to compile „HelloWorld“ example on the OLinuXino.
Two important preparations:
1)You have to download the latest software package from the GitHub of iMX233-OLinuXino,
down in the code you will meet “xxxxxxx” which you will have to replace with the correct
locations in the package.
2)When trying I2C examples I2C jumpers has to be configured for hardware I2C mode.
I. How to create SD-card with Archlinux image
1. Download the image files from: xxxxxxx . Put the files in desired folder, for example
/home/User/Archlinux.
2. Insert the card-reader into the Linux host machine.
IMPORTANT NOTE - this example is given with "sdb1 and sdb2" devices but it could enumerate
differently on your host, so confirm what it enumerates as before running fdisk!
3. Unmount the card-reader:
& sudo umounth /dev/sdb1
4. Format the SD-card using fdisk:
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& sudo fdisk /dev/sdb
5. With the help of the menu create two partitions. The steps are the following:
5.1. Type “p” to view existing partitions on the SD-card
5.2. Type “d” to delete all partitions
5.3. Type “n” to create new one
5.4. Set “1” as partition number
5.5. Type “p” to select primary partition
5.6. Press Enter to select default beginning sector
5.7. Type “+32M” to create 32MB partition
5.8. Type “t” to change partition type
5.9. Type “53”
5.10. Type “n” to create another partition
5.11. Set “2” as partition number
5.12. Type “p” to set partition as primary
5.13. Press Enter to set default size of the partition
5.14. Type “w” to write partitions to the SD-card
6. Create the second partition with ext3 file system:
& sudo mkfs.ext3 /dev/sdb2
7. Mount the second partition:
& sudo mount /dev/sdb2 /mnt/mmc
If you don't have mountpoint you should create one. Just type:
sudo mkdir /mnt/dir
8. Login as root for the next operations:
& sudo su
IMPORTANT NOTE: It is necessary to log-in as root, not as super-user!
9. Extract the downloaded tarball into the second partitions:
& tar -xzf /home/User/Archlinux/xxxxx.tar.gz
10. The next step is to to write the bootloader and kernel image to the first partition.
& dd if=/Archlinux/xxxxx.img of=/dev/sdb1 ibs=512 seek=4 conv=sync,notrunc
11. Unmount the SD-card, it should be ready for use.
& cd
& umount /dev/sdb2
12. Download the new kernel patch from: xxxxxxxxxxxxxxxxxxxx
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13. Put the file in USB flash drive. Insert the flash drive into OLinuXino board.
& mount /dev/sdc1 /mnt/usb
& cp -fv /home/User/Downloads/ /mnt/usb
& umount /mnt/usb
Again this is example. You should correct this commands with your paths and corresponding
devices.
IMPORTANT NOTE: The following commands are entered into OLinuXino terminal.
14. Mount the flash drive
& mount /dev/sdb1 /mnt/usb
15. Run pacman to update the kernel:
& pacman -S /mnt/usb/kernel26-olinuxino-2.6.35.3-6-arm.pkg.tar.xz
16. Follow the instructions. Just type “y” when promted.
17. Reboot
IMPORTANT NOTE: If you are connected to internet, you can use the following command:
& pacman -U http:// xxxxxxx .tar.xz .
Using this you can skip the part with the USB flash drive. Using the same command you could
download different packages:
& pacman -Sy
II. Set up the internet
This is a working example, but you might wish to read some additional information, if this
doesn't work for you.
With every reboot the device is assigned with different MAC address. To change this use
the commands:
& ip link set dev usb0 down
& ip link set dev usb0 address aa:bb:cc:dd:ee:ff
& ip link set dev usb0 up
To set an IP address enter:
& ifconfig usb0 192.168.0.249
or whatever address you want.
After that add default gateway:
route add default gw 192.168.0.1 usb0
Finally you should add DNS-server. You should modify /etc/resolv.conf with vi, or other
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program. For example:
& vi /etc/resolv.conf
Press d several times to remove all lines. Press I to enter insert mode. Type:
& nameserver 192.168.0.1
(Again this is example. You should add you DNS-server.)
After you finish entering this press Esc. This will set the program in command mode. In
command mode press:
& :wq
This should do the work. To check connection use ping. If it doesn't check your
configuration again and router settings. You can use ifconfig to see OLinuXino settings.
III. Using GCC to make Hello_World
In the home folder there are some examples
& cd /home/examples
& ls
And you should see all files and folders. You can create new folder (if you want) with the
command:
& mkdir
To see our HelloWorld program go to /HelloWorld folder
& cd /home/examples/HelloWorld
& ls
In this folder are two files:
- hello
- hello_world.c
The C file is the sourse code. Actually this is text file with .c extention. Type vi or cat
hello_world.c to view the source. You could modify the source whatever you want. After
the source is ready to compile the file use:
& gcc -o hello_world.c hello
For more complicated compiling type:
& man gcc
To execute the program:
& ./hello
The result of the execution should be:
Hello .
In the other directory /home/i2c are three examples for hardware I2C. You could compile
them using the same command:
& gcc -o .c
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After execution you could see the I2C working using osciloscope connected to the
corresponding GPIOs.
You can see that the LED1 on the board is blinking. This is a backgrond shell process.
Again in the /home you can see a third folder led_blink. In this one there is a file
led_blink. Type:
& cat led_blink
You can see that this is shell script. To execute this script every time the linux is loaded the
path should be added to the file rc.local.
& vi /etc/rc.local
Add the path to the script file:
/home/examples/led_blink/led_blink &
The "&" means that the script will be running in background.
2.11 How to use a custom Wi-Fi dongle based on RealTek RTL8188CUS and
RTL8192CU under ARCH Linux
This procedure was done on the Olinuxino-Maxi. It was connected with a wired ethernet during the
procedure. Once the WiFi is functional, the wired ethernet can be removed. The microSD card can
then be moved to another Olinuxino board such as the Micro.
Log into the Olinuxino board.
upgrade the system:
pacman -Syu
Then install development tools
pacman -S base-devel
Delete empty directories:
rmdir /usr/lib/modules/2.6.35-6-ARCH+/build
rmdir /usr/lib/modules/2.6.35-6-ARCH+/source
Install kernel source:
pacman -S kernel26-headers-olinuxino
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Get the Realtek drivers from the Realtek web site:
http://www.realtek.com.tw/downloads/downloadsView.aspx?
Langid=1&PFid=48&Level=5&Conn=4&ProdID=277&DownTypeID=3&GetDown=false&Downl
oads=true
I downloaded RTL8188CUS (the one showing up on lsusb)
If you choose RTL8192CU you get the same file
The file comes as a zip file:
RTL819xCU _USB_linux_v3.4.3_4369.20120622.zip
Assume you downloaded it to your workstation.
Unzip the file.
Inside there is a folder called driver with a file inside called:
rtl8188C_8192C_usb_linux_v3.4.3_4369.20120622.tar.gz
Copy that file to the Olinuxino target:
scp rtl8188C_8192C_usb_linux_v3.4.3_4369.20120622.tar.gz root@ip_addr_of_Olinuxino:/root
log into Olinuxino
cd /root
mkdir driver
mv rtl8188C_8192C_usb_linux_v3.4.3_4369.20120622.tar.gz driver
cd driver
tar xzf rtl8188C_8192C_usb_linux_v3.4.3_4369.20120622.tar.gz
cd rtl8188C_8192C_usb_linux_v3.4.3_4369.20120622
vi Makefile
Change the line:
CONFIG_PLATFORM_I386_PC = y
to
CONFIG_PLATFORM_I386_PC = n
Below it add the line:
CONFIG_PLATFORM_ARM_iMX233 = y
find the block:
---------------------------------------------------------
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ifeq ($(CONFIG_PLATFORM_ARM_PXA2XX), y)
EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN
ARCH := arm
CROSS_COMPILE := arm-none-linux-gnueabi-
KVER := 2.6.34.1
KSRC ?= /usr/src/linux-2.6.34.1
endif
---------------------------------------------------------
Below it adds the block:
---------------------------------------------------------
ifeq ($(CONFIG_PLATFORM_ARM_iMX233), y)
EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN
ARCH := arm
CROSS_COMPILE := /usr/bin/
KVER := KVER := 2.6.35-6-ARCH+
KSRC ?= /usr/src/linux-2.6.35-6-ARCH+
MODDESTDIR := /usr/lib/modules/2.6.35-6-ARCH+/kernel/drivers/net/wireless/rtl818x
endif
---------------------------------------------------------
Save and exit:
:wq
make clean
make
rmmod 8192cu.ko (not really needed)
insmod 8192cu.ko
make install
Verify that the driver has been installed:
[root@alarm wireless]# ls -l /sys/class/net
total 0
drwxr-xr-x 4 root root 0 Aug 14 16:55 lo
drwxr-xr-x 4 root root 0 Aug 14 16:55 usb0
drwxr-xr-x 5 root root 0 Aug 14 16:43 wlan0
wlan0 is the new driver
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reboot
Make sure you can see both usb0 (ethernet) and wlan0 on all the following:
ifconfig
ls -l /sys/class/net
iwconfig
you may need to bring the interface up manually:
ip link set wlan0 up
scan for access points:
iwlist wlan0 scan
cp /etc/wpa_supplicant/wpa_supplicant.conf /etc/wpa_supplicant/wpa_supplicant.conf.original
wpa_passphrase myssid "my_secret_passkey" > /etc/wpa_supplicant/wpa_supplicant.conf
Associate with access point according to the encryption type:
Encryption Command
No Encryption iwconfig wlan0 essid "linksys"
WEP w/ Hex Key iwconfig wlan0 essid "linksys" key "0241baf34c"
WEP w/ ASCII passphrase iwconfig wlan0 essid "linksys" key "s:pass1"
WPA wpa_supplicant -B -Dwext -i wlan0 -c /etc/wpa_supplicant/wpa_supplicant.conf
Verify association:
iwconfig wlan0
Assign IP address:
dhcpcd wlan0 (dhcp)
or (static)
ip addr add 192.168.0.2/24 dev wlan0
ip route add default via 192.168.0.1
-------------------------------------------------
To set up automatically at boot:
pacman -S netcfg
pacman -S wpa_actiond
pacman -S ifplugd
cp /etc/network.d/examples/wireless-wpa /etc/network.d/my_wifi_network
cp /etc/network.d/examples/ethernet-dhcp /etc/network.d/my_eth_network
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vi /etc/network.d/my_wifi_network
configure all parameters
vi /etc/network.d/my_eth_network
configure all parameters (make sure you change eth0 to usb0)
You can have multiple profiles (e.g. for roaming, etc.)
To manually connect a profile:
netcfg my_wifi_network
To manually disconnect a profile:
netcfg down my_wifi_network
There are 3 daemon options for configuring networks at boot time.
1. network -- the original setting. don't use that since we're using netcfg
2. net-profiles
or
3. net-auto-wireless and net-auto-wired
This procedure is using the last option.
vi /etc/rc.conf
Look for DAEMONS=(..)
delete network and add:
net-auto-wireless and net-auto-wired
vi /etc/conf.d/netcfg
Change to: NETWORK=(@my_wifi_network @my_eth_network)
Make sure you have the correct names for WIRED_INTERFACE and WIRELESS_INTERFACE
(change eth0 to usb0)
-------------------------------------------------
Also see:
https://wiki.archlinux.org/index.php/Beginners'_Guide#Setup_wireless_network
https://wiki.archlinux.org/index.php/Wireless_Setup#Getting_an_IP_address
https://wiki.archlinux.org/index.php/Netcfg
Other commands:
ip link show wlan0
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CHAPTER 3: OLINUXINO BOARD DESCRIPTION
3. Introduction to the chapter
Here you get acquainted with the main parts of the board. Note the names used on the board might
differ from the names used below to describe them. For the actual names check the OLinuXino
board itself.
3.1 Layout (top view)
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CHAPTER 4: THE iMX233 MICROCONTROLLER
4. Introduction to the chapter
In this chapter is located the information about the heart of OLinuXino – its microcontroller. The
information is a modified version of the datasheet provided by its manufacturers.
4.1 The microcontroller
ARM926 CPU Running at 454 MHz
Integrated ARM926EJ-S CP
16-Kbyte data cache and 16-Kbyte instruction cache
— One-wire JTAG interface
— Resistor-less boot mode selection using integrated OTP values
32Kbytes of Integrated Low-Power On-Chip RAM
64 Kbytes of Integrated Mask-Programmable On-Chip ROM
1 Kbit of On-Chip One-Time-Programmable (OCOTP) ROM
Universal Serial Bus (USB) High-Speed (Up to 480 Mb/s), Full-Speed (Up to 12 Mb/s)
— Full-speed/high-speed USB device and host functions
— Fully integrated full-speed/high-speed Physical Layer Protocol (PHY)
— Mass storage host-capable (uncertified by USB-IF)
Power Management Unit
— Single inductor DC-DC switched converter with multi-channel output supporting Li-Ion
batteries.
— Features multi-channel outputs for VDDIO (3.3 V), VDDD (1.2 V), VDDA (1.8 V),
VDDM (2.5V) and regulated 4.2V source.
— Direct power from 5-V source (USB, wall power, or other source), with programmable
current limits for load and battery charge circuits.
— Silicon speed and temperature sensors enable adaptive power management over
temperature and silicon process.
Audio Codec
— Stereo headphone DAC with 99 dB SNR
— Stereo ADC with 85 dB SNR
— Stereo headphone amplifier with short-circuit protection and direct drive to eliminate
bulky capacitors
— Amplifiers are designed for click/pop free operation.
— Two stereo line inputs
— Microphone input
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— SPDIF digital out
16-Channel Low-Resolution ADC
— 6 independent channels and 10 dedicated channels
— Resistive touchscreen controller
— Temperature sensor controller
— Absolute accuracy of 1.3%
Security Features
— Read-only unique ID for digital rights management algorithms
— Secure boot using 128-bit AES hardware decryption
— SHA-1 hashing hardware
— Customer-programmed (OTP) 128 bit AES key is never visible to software.
External Memory Interface (EMI)
— Provides memory-mapped (load/store) access to external memories
— Supports the following types DRAM:
— 1.8V Mobile DDR
— Standard 2.5V DDR1
Wide Assortment of External Media Interfaces
— High-speed MMC, secure digital (SD)
— Hardware Reed-Solomon Error Correction Code (ECC) engine offers industry-leading
protection and performance for NANDs.
— Hardware BCH ECC engine allowing for up to 20-bit correction and programmable
redundant area.
Dual Peripheral Bus Bridges with 18 DMA Channels
— Multiple peripheral clock domains save power while optimizing performance.
— Direct Memory Access (DMA) with sophisticated linked DMA command architecture
saves power and off-loads the CPU.
Highly Flexible Display Controller
— 8-bit data ITU-R BT.656 D1 digital video stream output mode (PAL/NTSC), with onthe-
fly RGB to YCbCr color-space-conversion.
— Flexible input formats
Pixel Processing Pipeline (PXP)
— Provides full path from color-space conversion, scaling, alpha-blending to rotation
without intermediate memory access
— Bi-linear scaling algorithm with cropping and letterboxing
— Alpha-blend, BITBLT, color-keying
— Memory efficient block-based rotation engine
Integrated TV-Out Support
— Integrated PAL/NTSC TV-encoder fully pipelined to display controller’s D1 resolution
output stream
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— Integrated low-power 10-bit Video DAC (VDAC) for composite analog video output.
Data Co-Processor (DCP)
— AES 128-bit encryption/decryption
— SHA-1 hashing
— High-speed memory copy
Three Universal Asynchronous Receiver-Transmitters (UARTs)
— Two high-speed application UARTs operating up to 3.25 Mb/s with hardware flow
control and dual DMA.
— Debug UART operates at up to 115Kb/s using programmed I/O.
I2C Master/Slave
— DMA control of an entire EEPROM or other device read/write transaction without CPU
intervention
Dual Synchronous Serial Ports (for SPI, MMC, SDIO, Triflash)
— 1-bit, 4-bit and 8-bit MMC/SD/SDIO modes
— Compliant with SDIO Rev. 2.0
— SPI with single, dual and quad modes.
Four-Channel 16-Bit Timer with Rotary Decoder
Five-Channel Pulse Width Modulator (PWM)
Real-Time Clock
— Alarm clock can turn the system on.
— Uses the existing 24-MHz XTAL for low cost or optional low power crystal (32.768 kHz
or 32.0 kHz), customer-selectable via OTP.
Customer-Programmable One-Time-Programmable (OTP) ROM via Integrated eFuse Block
— Resistor-less boot mode selection
— 128-bit boot mode crypto key
— Boot mode specification of NAND characteristics for device that the customer is
soldering to the board. This means no more costly delays waiting for new device support in t
he boot ROM.
— Fully software-programmable and accessible
Flexible I/O Pins
— All digital pins have drive-strength controls
— Most non-EMI digital pins have general-purpose input/output (GPIO) mode.
For comprehensive information on the microcontroller visit the Freescale’s web page for a
datasheet.
At the moment of writing the microcontroller datasheet can be found at the following link:
http://www.freescale.com/files/dsp/doc/ref_manual/IMX23RM.pdf
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CHAPTER 5: CONTROL CIRCUITY
5. Introduction to the chapter
Here you can find information about reset circuit and quartz crystals locations, the power supply
circuit is discussed.
5.1 Reset
OLinuXino's reset circuit includes R9 (47KΩ), R10 (47 Ω), T1, T2, Q1 and a RESET button. The
RESET is specific for the fact that it is accomplished when the quartz is disconnected using 3.3V
and the transistors T1 and T2.
5.2 Clocks
24 MHz quartz crystal Q1 is connected to pins 121 and 122 of the iMX233 processor.
25 MHz quartz crystal Q2 is found at pins 60 and 61 of the Ethernet controller – LAN9512-JZX.
5.3 Power supply circuit
The power supply circuit of OLinuXino-MAXI allows flexible input supply from 6V to 16V direct
current. This means a wide range of power supplies, adapters, converters are applicable. The
maximum amperage recommended is 1A by default (0.250mA if 3.3VIO_E is closed – read below).
All measures below are taken at 10V external supply.
If measuring the current consumption it should be around 0.06A before initializing all the
peripherals. The consumption raises to 0.12A without LAN and USB hosts initialized and Linux
running. The consumption goes up 0.15A with the Linux running when LAN and both USB hosts
initialized.
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If you have a standard USB flash drive attached to a USB host, Linux and LAN running the typical
consumption is around 0.20A.
When powered by the typical 3.7V battery the LAN and USB-hosts are disabled. The consumption
when Linux is running is around 0.75A.
The board can be powered either from the power jack or from the LIPO_BAT connector. Note that
since standard batteries can't provide the voltage needed for the board it is advisable to use the
power from the power jack. When you use the LIPO_BAT connector and a battery the chip handling
the Ethernet and the USB hosts is disabled. Also the power button has alternative function when the
board is powered by a battery – check 6.13.
If you have successfully powered the board the red PWR LED will turn on. Note that it is possible
to have the PWR LED on even if there isn't enough power for proper operation of the board and all
the peripherals currently connected.
The jumper 5V_E (5V Enable) which is closed by default enables powering the board via the power
supply circuit.
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The 3.3V_E (3.3V Enable) jumper when closed enables the 3.3V power line.
Note the 3.3VIO_E jumper which by default is closed – if you open it (cut it) - it disables the U6
DC-DC converter and enables a built-in the iMX233 DC-DC. The problem is that the built-in DC-
DC has a limit of 250mA of amperage the chip heats a bit so we decided to put external DC-DC for
better stability. When working with 3.3VIO_E closed pay attention to the amperage used.
If 3.3VIO_E is closed(soldered) – it enables the additional DC-DC which is the better solution if
powering the board from external supply. However, if 3.3VIO_E is closed and you power the board
from a battery the LAN and the USB-HOSTs will not receive enough power and will be disabled.
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CHAPTER 6: CONNECTORS AND PINOUT
6. Introduction to the chapter
In this chapter are presented the connectors that can be found on the board all together with their
pinout and notes about them. Jumpers functions are described. Notes and info on specific
peripherals are presented. Notes regarding the interfaces are given.
6.1 Debugging interfaces
If you don't have a separate monitor or display around, and you don't wish to swap cables constantly
with your personal computer using the debug interfaces provide better option for you OLinuXino
experience.
There are three debugging options available on the OLinuXino. It is preferable to use one of the
first two - UART or SJTAG but in case you want to use the classic 6-wire parallel JTAG there is an
option explained below.
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6.1.1 UART debug
The first one is a debug UART interface – U_DEBUG. You can use our USB-SERIAL-CABLE
for debugging via the UART.
In order to avoid SD card malfunction, when using the USB-SERIAL-CABLE-F with
OLinuXino-MAXI it is advisable to first insert the iMX233-OLinuXino-SD card and then
power the board (if using battery also press the PWR button). Wait 4-5 seconds and then
connect the USB-SERIAL-CABLE-F.
Please also check “2.4 Powering the board” for detailed info.
Note on how to use the U_DEBUG with USB-SERIAL-CABLE-F which has RED GREEN
BLUE wires GND=BLUE, RX(INPUT)=GREEN, TX(OUTPUT)=RED. You have to connect
to OLinuXino-MAXI U_DEBUG connector in this sequence:
BLUE wire to pin.3 (GND)
GREEN wire to pin.2 (TX)
RED wire to pin.1 (RX)
U_DEBUG
Pin # Signal Name Processor Pin #
1 PWM0/DUART_RXD 125
2 PWM1/DUART_TXD 126
3 GND 30, 35, 98, 105, 112, 118
4 DEBUG 84
You can also check the pin names at the bottom of the board under the U_DEBUG header.
6.1.2 SJTAG debug
The second interface is the Serial JTAG (SJTAG) one-wire interface. It works with various external
JTAG debugger dongles through a Freescale-defined FPGA/CPLD. SJTAG supports the Green
Hills Slingshot and ETM probe debugger dongles, as well as those made by ARM, Abatron, and
Lauterbach.
Note that the SJTAG interface comes without plastic header mounted.
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The HW_DIGCTL_CTRL_USE_SERIAL_JTAG bit in the digital control block selects whether the
one-wire serial JTAG interface or the alternative six-wire parallel JTAG interface is used. There are
other options in the digital control block which might interest you and our advice is to check the
iMX233's datasheet released by Freescale.
SJTAG
Pin # Signal Name Processor Pin #
1 3.3VREG -
2 GND 30, 35, 98, 105, 112, 118
3 SJTAG_PSW 119
4 DEBUG 84
The pin names are also written at the bottom of the board for your convenience.
6.1.3 Classic JTAG debug
The third option is to use the classic 6-pin parallel JTAG (not including GND and VCC). There are
pads left for this option at the bottom of the board under the SD card holder. They are named
individually and framed near a “JTAG” name.
The important thing is that these pins are multiplexed with the SD card signals. In order to use the
6-pin JTAG you will have to stop using the SD card. Note also that the classic JTAG interface
comes without plastic header mounted so in order to use it you will need to use wires for
connection.
Consider the the software settings required to switch from SJTAG to 6-pin JTAG and vice verse
referring to the iMX233 manual. For instance:
The HW_DIGCTL_CTRL_USE_SERIAL_JTAG bit in the digital control block selects whether the
serial JTAG interface or the alternative six-wire parallel JTAG interface is used.
HW_DIGCTL_CTRL_USE_SERIAL_JTAG - 0x0 - Selects whether the one-wire serial JTAG
interface or the alternative six-wire parallel JTAG interface is used. 0 = Parallel six-wire JTAG is
enabled and is mapped to a collection of module pins that must be enabled by programming their
MUXSEL bits in the pin control block. 1 = Serial JTAG is enabled and uses the dedicated DEBUG
pin. The ROM bootcode writes this field prior to enabling JTAG, selecting which type of JTAG pin
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signaling to use. OLD_JTAG = 0x0 Use six-wire parallel JTAG mode. SERIAL_JTAG = 0x1 Use
one-wire serial JTAG mode.
It is good idea to check the datasheet of the iMX233 processor for all the options in the digital
control block. The processor's datasheet should be always the first piece of paper you consult when
dealing with electronics.
Classic JTAG (multiplexed with SD card)
Pin # Signal Name Processor Pin #
1 SSP1_DATA1 85
2 SSP1_DATA0 84
3 GND 30, 35, 98, 105, 112, 118
4 SSP1_SCK 90
5 SD_VCC -
6 SSP1_CMD 83
7 SSP1_DATA3 87
8 SSP1_DATA2 86
Notice that the pad numeration is written at the bottom of OLinuXino-MAXI under the microSD
card connector. Please check the manual part for microSD card for a schematic of the pins.
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6.2 SD/MMC slot
The microSD card slot is a standard 8pin connector.
We have tested a number of microSD cards on the OLinuXino boards and all of them worked fine
regardless manufacturer or capacity. However, keep in mind that some of the lower quality
microSD cards might draw too much current from the slot which might cause power-state problems.
If you suspect the microSD card is causing problems please try using another one of better quality
for better results.
microSD card connector
Pin # Signal Name Processor Pin #
1 SSP1_DATA2 86
2 SSP1_DATA3 87
3 SSP1_CMD 83
4 SD_VCC -
5 SSP1_SCK 90
6 GND 30, 35, 98, 105, 112, 118
7 SSP1_DATA0 84
8 SSP1_DATA1 85
Notice that the pad numeration is written at the bottom of OLinuXino-MAXI under the microSD
card connector.
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When removing the card, please make sure that you release it from the connector by pushing and
NOT by pulling the card directly (this can damage both the connector and the microSD card).
6.3 UEXT module
OLinuXino board has UEXT connector and can interface Olimex's UEXT modules.
For more information on UEXT please visit:
http://www.olimex.com/dev/OTHER/UEXT.pdf
*Note the two jumpers PIN29/SOFT_CL – PIN22/LCD_EN/I2C_SCL, and PIN28/SOFT_SDA3 –
PIN21/LCD_HSYNC/I2C_SDA which by default are set to a software SPI. They can be used to set
the whole UEXT to a hardware SPI.
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UEXT connector
Pin # Signal Name Processor Pin #
1 +3.3VREG -
2 GND 30, 35, 98, 105,
112, 118
3 AUART1_TXD 127
4 AUART1_RXD 128
5 I2C_SCL 34(default) OR 11*
6 I2C_SDA 31(default) OR 15*
7 PIN9/LCD_D08/SSP2_MISO 22
8 SSP2_MOSI 21
9 SSP2_SCK 33
10 PIN12/LCD_D11/UEXT_CS 25
The UEXT pinout is also printed at the bottom of the board under the connector.
6.4 GPIO (General Purpose Input/Output) 40pin connector
The GPIO pins are led out on a separate 40pin connecter. They allow the user to attach additional
hardware, check readings or perform hardware debug. The “GPIO Pin#” column shows connector
number and does NOT represent the naming on the bottom of the board.
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GPIO connector hardware
GPIO GPIO
Signal Name Processor pin# Signal Name Processor pin#
Pin# Pin#
1 BAT 103 21 PIN8/LCD_D07 9
30, 35, 98,
2 GND 22 PIN27/PWM2 91
105, 112, 118
3 PIN17/LCD_D16 19 23 PIN7/LCD_D06 8
4 PIN18/LCD_D17/LAN_RES 20 24 PIN28/SOFT_SDA 31
5 PIN16/LCD_D15 28 25 PIN6/LCD_D05 7
6 PIN19/LCD_DOTCLK 17 26 PIN29/SOFT_SCL 34
7 PIN15/LCD_D14 29 27 PIN5/LCD_D04 6
8 PIN20/LCD_VSYNC 16 28 PIN30 81
9 PIN14/LCD_D13 26 29 PIN4/LCD_D03 5
PIN21/LCD_HSYNC/
10 15 30 PIN31 82
I2C_SDA
GPIO GPIO
Name Processor pin# Name Processor pin#
Pin# Pin#
11 PIN13/LCD_D12 27 31 PIN3/LCD_D02 4
12 PIN22/LCD_EN/I2C_SCL 11 32 PIN32/LRADC1 107
13 PIN12/LCD_D11/UEXT_CS 25 33 PIN2/LCD_D01 3
14 PIN23/LCD_DISP 12 34 PIN33/LRADC0 108
15 PIN11/LCD_D10 24 35 PIN1/LCD_D00 2
16 PIN24/LCD_WR 13 36 PIN34/MIC 116
17 PIN10/LCD_D09 23 37 +5VUEXT 102
18 PIN25/LCD_RS 14 38 3.3VREG -
PIN9/LCD_D08/
19 22 39 VIN -
SSP2_MISO
30, 35, 98,
20 PIN26/LCD_CS 10 40 GND
105, 112, 118
The hardware is associated differently in the Linux following the GPIO naming conventions
suggested in the iMX233 datasheet. You can check the connection between Linux naming of the
pin, Olimex naming of the pin and the consecutive connector pin number in the table below. The
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OLIMEX© 2012 OLinuXino-MAXI user's manual
ones filled with “Not implemented” doesn't have Linux support by the time of writing and will be
updated overtime. “Linux GPIO” is the one you should use in Linux (the one in the datasheet);
“OLinuXino name” is the pin as written on the bottom of the board. ”OLinuXino GPIO Connector
#” is the consecutive number of pins with BAT being Pin#1 and GND#40.
Note that if “OLinuXino Name” starts with P and then is followed by a number X, the PX is the
name written on the bottom of the board (under the connector) with white ink. If “OLinuXino
Name” is other text it is a signal used for the hardware of the board but still can be controller by the
Linux (it can't be found at the GPIO connector though).
The Linux implementation of pins
Linux Linux
OLinuXino GPIO OLinuXino OLinuXino GPIO
GPIO/iMX OLinuXino Name GPIO/iMX
Connector # Name Connector #
233 GPIO 233 GPIO
Not Not
0 PIN9 19 32 to 39
implemented implemented
1 PIN10 17 51 PIN25 18
2 PIN11 15 52 PIN24 16
3 PIN12 13 53 PIN26 20
4 PIN13 11 55 PIN22 12
5 PIN14 9 56 PIN21 10
JTAG_TDO1 Not
6 PIN15 7 64
SSP1_CMD implemented
Not
7 PIN16 5 65 LED1
implemented
16 PIN17 3 91 PIN30 28
17 PIN18 4 92 PIN31 30
19 TEST_PAD Not implemented
20 UEXT_SPI2_MOSI 9
23 PIN29 26
24 UEXT_SPI2_SCK Not implemented
25 PIN28 24
30 UEXT_TX1 Not implemented
31 UEXT_RX1 Not implemented
Below you can find the GPIO_CON as seen in the schematic:
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When looking at the bottom of OLinuXino-MAXI near the GPIO connector there is also an
additional GND pad named GND_PIN which is a fast way to have access to a ground signal.
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OLIMEX© 2012 OLinuXino-MAXI user's manual
6.5 USB HOSTs
The USB hosts and the Ethernet are controller by a single chip (LAN9512) which handles both
functionality.
The LAN9512 contains a Hi-Speed USB 2.0 hub with two fully-integrated downstream USB 2.0
PHYs, an integrated upstream USB 2.0 PHY, a 10/100 Ethernet MAC/PHY controller, and an
EEPROM controller. It offers SMSC's highest level of USB 2.0 and 10/100 Ethernet compliance
and interoperability. Additionally, the LAN9512 devices simplify system design by leveraging the
existing USB stack and reducing the PCB footprint by up to 65% compared to discrete competitive
solutions. USB-based networking technology offers a cost-effective and smart design alternative to
traditional PCI/PCI-Express networking solutions due to the flexibility of routing and placement of
Ethernet and USB connectivity ports.
The big advantage of having USB hosts available over USB devices is that you can use them to
power devices.
The signals follow the familiar and standard USB host pattern:
USB 2-level host
PIN# SIGNAL NAME
1 USB_PWR_A
2 USB_HOST_D-
3 USB_HOST_D+
4 GND
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6.6 LAN connector
The Ethernet connectivity is handled by the LAN9512 controller (which also incorporates a USB
module in it). The signals found on the Ethernet connector are listed in the table below:
LAN connector
PIN# SIGNAL NAME
1 TX+
2 TX-
3 VDD
4 NOT CONNECTED
5 NOT CONNECTED
6 VDD
7 RX+
8 RX-
The two leds on the front side of the LAN connector show the state of the Ethernet. The meaning
behind the different states can be found in the table below:
LED Color Usage
Right Green Link status
Left Yellow Activity status
6.7 PWR Jack
The power jack used is the typical 2.5mm one used by Olimex in most of our products. You should
provide between 6 and 16 volts @ 1A to the board.
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Pin # Signal Name
1 Power Input
2 GND
More info about the power supply can be found in chapter 5 of this manual
6.8 Headphones and line-in connector
Standard audio jack and phone jack are mounted for the audio interfacing.
Headphones/Audio out connector
Pin# SIGNAL NAME Processor Pin#
2 L channel 113
3 R channel 109
5 GND GND pins
The headphones resistance is 16 Ohms!
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6.9 Battery connector
When using the battery connector keep in mind that it is an energy solution that wouldn't be able to
power the board and all the peripherals. The voltage of a 3.7V LIPO battery would be enough to
power the processor and the memory but won't be enough to power the LAN and the USB hosts.
Pin # Signal Name
1 VBAT
2 GND
The pins are also written on the top of the board in the base of the connector.
6.10 Composite video connector
The composite video is the connector you should use if you wish OLinuXino-
MAXI video output on a monitor.
The whole signal is controlled by pin #104 from the i.MX233 processor.
The + signal is lead to the middle of the connector. The outside part is the GND.
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6.11 Boot mode positions
The iMX233 can boot the operating system from different locations. The default location for the
Linux files we used is the microSD card. There are 4(four) jumpers responsible for the boot
location: D03, D02, D01 and D00. They are located on the top of the board between the processor
and 40pin GPIO connector. Note that the jumpers are SMD type and opening a jumper would
require cutting, closing a jumper would require soldering. To be able to do the quoted operations
you will need basic engineering skills and experience. You can check below the table or the
schematic for the correct positions. Value of “1” means the jumper is closed.
BOOT MODE D03 d02 d01 d00
USB 0 0 0 0
3.3V I2C Master 0 0 0 1
33.3V SPI Flash 1 Master 0 0 1 0
3.3V SPI Flash 2 Master 0 0 1 1
3.3V NAND 0 1 0 0
Start up waits for JTAG
0 1 1 0
debugger connection
3.3V SD/MMC 1 (Default !!!) 1 0 0 1
3.3V SD/MMC 2 1 0 1 0
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6.12 Jumper description
Please note that all the jumpers on the board are SMD type. If you feel insecure of your
soldering/cutting technique it is better not to try to adjust the jumpers.
6.12.1 SCL_SW/SCL_HW and SDA_SW/SDA_HW
Those two jumpers must be moved together – there are two available options – configuring
software I2C interface (SCL_SW, SDA_SW) or hardware I2C interface (SCL_HW, SDA_HW
positions).
Jumpers are set to SCL_HW and SDA_HW by default. This defines hardware I2C.
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6.12.2 5V_E
The 5V_E jumper allows control over the powering line. If you want to disable the 5V powering
line open 5V_E jumper.
The default position is closed.
6.12.3 3.3V_E and 3.3VIO_E jumpers
Important these jumpers must be moved together! Closing both of 3.3V_E and 3.3VIO_E at
the same time will damage the processor. One of them has to be open (unsoldered/cut). There
are two possible positions:
1) 3.3V_E closed (soldered), 3.3VIO_E open (unsoldered/cut)
2) 3.3V_E open (unsoldered/cut), 3.3VIO_E closed (soldered)
In the default variant 1) the board uses the mounted by OLIMEX DC-DC 3.3V convertor which
when the board is powered by external supply is the better alternative. However, if you use battery
it will not power the chip handling the USB and the LAN functionality. Basically the board will
lack USB-HOSTs and LAN when jumpers are set in variant 1) and the board is powered by a
battery via the BAT connector.
If you set the jumpers in 2) state the board's 3.3V will be handled by the built-in iMX233 DC-DC
but the problem is it isn't configured to be used with another chip so it doesn't provide enough
current for all the USB-HOSTs and the LAN which might cause some of the devices plugged in the
USB to lack power and also might burn the chip if too much current is drawn. However, in this 2)
mode of jumpers it is possible to power the board from a battery and still have some current on the
USB-HOSTs and the LAN. The maximum current the built-in DC-DC can provide safely is 200mA.
6.12.4 Boot mode selecting jumpers
The boot mode is discussed in chapter 6.11 of this manual.
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6.13 Additional hardware components
The components below are mounted on OLinuXino but are not discussed above. They are listed
here for completeness:
Reset button - used to reset the board
Power button – when Linux is running pressing PWR_BUT will put the board in low power mode;
when powered by battery PWR_BUT is used to initially power up the board – and pressing the
board again after it is powered will put it low power mode
Recovery pads (REC) - these can be used for attaching a recovery button; when powered by
battery the recovery button is used to bring the processor to normal power mode – you can short-
circuit the pads for this feature without having to mount a button
512 (32M x 16) MBit DDR SDRAM - the exact memory used at the moment of writing is Xylinx
H5DU5xxxyyy
LED1 + Power LED
6.14 Accessories
Here you will find additional information for Olimex products you can use with OLinuXino-MAXI
purchase
6.14.1 USB-SERIAL-CABLE-F
The cable for the U_DEBUG interface that can be purchased for additional cost has three cables. It
is important to specify in your purchase order whether you want the USB-SERIAL-CABLE variant
with male a male or female connectors.
You will need a drivers that can be downloaded from the page of USB-SERIAL-CABLE:
https://www.olimex.com/Products/Components/Cables/USB-Serial-Cable/USB-Serial-Cable-F/.
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CHAPTER 7: BLOCK DIAGRAM AND MEMORY
7. Introduction to the chapter
On the next page you can find a memory map for this family of processors. It is strongly
recommended to refer to the original datasheet released by Freescale for one of higher quality.
7.1 Memory addresses
Below is the table with some of the most frequently used addresses. For full list of addresses check
the manual released by Freescale (Chapter Memory Map).
Decode Device Mnemonic Start address End address Size
block
AHB On-chip RAM OCRAM 0x00000000 0x00007FFF 32KB
On-chip RAM alias OCRAM 0x00008000 0x3FFFFFFF
External memory 0x40000000 0x5FFFFFFF 512MB
Default Slave 0x60000000 0x7FFFFFFF 512M
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7.2 Processor block diagram
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7.3 Physical memory map
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OLIMEX© 2012 OLinuXino-MAXI user's manual
CHAPTER 8: SCHEMATICS
8. Introduction to the chapter
In this chapter are located the schematics describing logically and physically OLinuXino.
8.1 Eagle schematic
OLinuXino schematic is visible for reference here. You can also find them on the GitHub for
OLinuXino at our site: https://www.olimex.com/Products/OLinuXino/iMX233/iMX233-
OLinuXino-MAXI/. The link to the GitHub is located in HARDWARE section.
The EAGLE schematic is situated on the next page for quicker reference.
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U1
DCDC_VDDD 1 76 A0
VDDD1 EMI_A00
93 75 A1
VDDD3
EMI_A01
C1 C2 74 A2
EMI_A02
73 A3 512Mb DDR SDRAM (32Mx16)
EMI_A03
22uF/6.3V 22uF/6.3V 35 72 A4
VSSD2 EMI_A04 U2
30 71 A5
VSSD1 EMI_A05
2.5V
70 A6 HY5DU121622D(L)T(P)-J
3.3VIO
EMI_A06
C3 22uF/6.3V 18 69 A7 D0 2 29 A0
VDDIO33_1 A0
EMI_A07 DQ0
C4 22uF/6.3V 92 68 A8 D1 4 30 A1 PIN6/LCD_D05
VDDIO33_3 A1
EMI_A08 DQ1
67 A9 D2 5 31 A2
EMI_A09 DQ2 A2
C5 22uF/6.3V 38 66 A10 D3 7 32 A3
VDDIO_EMIQ EMI_A10 DQ3 A3
C6 100nF 45 65 A11 D4 8 35 A4 R14
VDDIO_EMI1 A4
EMI_A11 DQ4 2.5V
C7 100nF 53 64 A12 D5 10 36 A5
VDDIO_EMI2 A5 NA(47k)
EMI_A12 DQ5
D6 11 37 A6
A6
DQ6
C8 22uF/6.3V 106 41 D0 D7 13 38 A7
VDDM/LRADC4 EMI_D00 DQ7 A7
43 D1 D8 54 39 A8
A8
EMI_D01 DQ8
C9 22uF/6.3V 101 42 D2 D9 56 40 A9
VDD4P2 A9
EMI_D02 DQ9
C10 22uF/6.3V 44 D3 D10 57 28 A10
A10/AP
EMI_D03 DQ10
47 D4 D11 59 41 A11
EMI_D04 DQ11 A11
48 D5 D12 60 42 A12
+5VEXT EMI_D05 DQ12 A12
D1
C11 22uF/6.3V 102 49 D6 D13 62
SS14 VDD5V
EMI_D06 DQ13
C12 100nF 50 D7 D14 63 26 BA0
BA0
EMI_D07 DQ14
51 D8 D15 65 27 BA1
BA1
EMI_D08 DQ15
DCDC_VDDD 52 D9 2.5V CS
EMI_D09
C13 22uF/6.3V 94 54 D10 24 CS 3.3VIO
DCDC_VDDD #CS
EMI_D10
C14 100nF 55 D11 1 21 WEN
#WE
BAT EMI_D11 VDD1
57 D12 18 22 CASN
#CAS
EMI_D12 VDD2
58 D13 33 23 RASN
#RAS
EMI_D13 VDD3
60 D14 3 R17 120R
EMI_D14 VDDQ1
59 D15 9 46 CLKN R15
3.3VIO #CK
EMI_D15 VDDQ2
C15 22uF/6.3V 95 15 45 CLK 47k
DCDC_VDDIO CK
VDDQ3
C16 22uF/6.3V 79 BA0 55 44 CKE
CKE
EMI_BA0 VDDQ4
80 BA1 61
EMI_BA1 VDDQ5
36 CLK 47 DQM1 PIN25/LCD_RS
EMI_CLK UDM
37 CLKN 51 DQS1
UDQS
DCDC_VDDA EMI_CLKN 2.5V
78 CKE 34
EMI_CKE VSS1
C17 22uF/6.3V 96 63 CS 48 20 DQM0 LCD_RS must to be pulled
DCDC_VDDA LDM
EMI_CE0N VSS2
C18 100nF 61 CASN 66 16 DQS0
High to enable Resistor Boot Mode.
EMI_CASN VSS3 LDQS
62 RASN 6
If pulled low, the i.MX233 will
BAT
EMI_RASN VSSQ1 R18 1k/1%
77 WEN 12 49 attempt to boot from OTP.
VREF
EMI_WEN VSSQ2
39 DQS0 52
EMI_DQS0 VSSQ3
40 DQS1 58 14 C38 100nF
NC1
EMI_DQS1 VSSQ4
C19 22uF/6.3V 100 56 DQM1 64 17
DCDC_BATTERY EMI_DQM1 VSSQ5 NC2
C20 22uF/6.3V DQM0
46 19
NC3
EMI_DQM0
C21 22uF/6.3V 53 25
NC4
NC7
82 PIN31 50 43
NC5
GPMI_CE0N NC6
98 81 PIN30
DCDC_GND GPMI_CE1N
103 34 PIN29/SOFT_SCL
BATT GPMI_WPN
C82 NA 31 PIN28/SOFT_SDA
L1 GPMI_RDN
22uH/1.5A/CD53 97 33 SSP2_SCK
DCDC_LN1
GPMI_WRN/SSP2_SCK
C83 10pF 99 32 TEST_PAD T_P
DCDC_LP
GPMI_RDY0/SSP2_DETECT
21 SSP2_MOSI
GPMI_RDY1/SSP2_CMD
C22 100nF VDDXTAL 120
VDDXTAL
C23 33pF XTALI 122 20 PIN18/LCD_D17/LAN_RES
XTALI
GPMI_ALE/LCD_D17
19 PIN17/LCD_D16 BOOT MODE SELECT
Q1 GPMI_CLE/LCD_D16
28 PIN16/LCD_D15
GPMI_D07/LCD_D15/SSP2_DATA7
Q24.000MHz/HC-49SM/SMD/20ppm/20pF 29 PIN15/LCD_D14 RM3
GPMI_D06/LCD_D14/SSP2_DATA6
C24 33pF XTALO PIN14/LCD_D13 Close D03_H PIN4/LCD_D03
121 26 2 1
XTALO R1
GPMI_D05/LCD_D13/SSP2_DATA5 3.3VIO Open D02_H
27 PIN13/LCD_D12 2 1 PIN3/LCD_D02
R2
GPMI_D04/LCD_D12/SSP2_DATA4
DCDC_VDDA 25 PIN12/LCD_D11/UEXT_CS Open 2 1 D01_H PIN2/LCD_D01
R3
GPMI_D03/LCD_D11/SSP2_DATA3
C25 100nF 110 24 PIN11/LCD_D10 Close 2 1 D00_H PIN1/LCD_D00
R4
VDDA1 GPMI_D02/LCD_D10/SSP2_DATA2
23 PIN10/LCD_D09
GPMI_D01/LCD_D09/SSP2_DATA1
22 PIN9/LCD_D08/SSP2_MISO
RA1206_(4X0603)_4B8_4.7K
GPMI_D00/LCD_D08/SSP2_DATA0
112 9 PIN8/LCD_D07
VSSA1
LCD_D07
118 8 PIN7/LCD_D06 RM2
VSSA2
LCD_D06
105 7 PIN6/LCD_D05 RA1206_(4X0603)_4B8_47K
VSSA4 LCD_D05
C26 1uF 117 6 PIN5/LCD_D04
VAG
LCD_D04
5 PIN4/LCD_D03
GPIO
LCD_D03
4 PIN3/LCD_D02
LCD_D02
USB_DP 124 3 PIN2/LCD_D01
USB_DP LCD_D01
USB_DM 123 2 PIN1/LCD_D00
USB_DM LCD_D00
BOOT MODE SELECT: LCD DATA
113 10 PIN26/LCD_CS
HPL
LCD_CS BOOT MODE D03 D02 D01 D00
109 14 PIN25/LCD_RS
HPR
LCD_RS
111 13 PIN24/LCD_WR USB 0 0 0 0
HP_VGND LCD_WR
12 PIN23/LCD_DISP
3.3V I2C Master 0 0 0 1
LCD_RESET/GPMI_CE3N
115 11 PIN22/LCD_EN/I2C_SCL
LINE1_INL 3.3V SPI Flash 1 Master 0 0 1 0
LCD_ENABLE/I2C_SCL
114 15 PIN21/LCD_HSYNC/I2C_SDA
LINE1_INR
LCD_HSYNC/I2C_SDA 3.3V SPI Flash 2 Master 0 0 1 1
16 PIN20/LCD_VSYNC
LCD_VSYNC/LCD_BUSY
PIN34/MIC 116 17 PIN19/LCD_DOTCLK 3.3V NAND 0 1 0 0
MIC LCD_DOTCK/GPMI_RDY3
Startup waits for JTAG debugger connection 0 1 1 0
LED1 PIN33/LRADC0
108 128 AUART1_RXD
LRADC0 3.3V SD/MMC 1 (Default !!!) 1 0 0 1
I2C_SDA/GPMI_CE2N/AUART1_RX
PIN32/LRADC1 107 127 AUART1_TXD
LRADC1
I2C_SCL/GPMI_RDY2/AUART1_TX 3.3V SD/MMC 2 1 0 1 0
125 PWM0/DUART_RXD
PWM0/ROTARYA/DUART_RX
104 126 PWM1/DUART_TXD
LED1 VDAC1 PWM1/ROTARYB/DUART_TX
91 PIN27/PWM2
PSWITCH PWM2/GPMI_RDY3
119 88 LED1
PSWITCH
SSP1_DETECT/GPMI_CE3N/USB_ID
83 SSP1_CMD
SSP1_CMD/SPI1_MOSI/JTAG_TDO
DEBUG 89 84 SSP1_DATA0
DEBUG SSP1_DATA0/SPI1_MISO/JTAG_TDI
85 SSP1_DATA1
SSP1_DATA1/I2C_SCL/JTAG_TCLK
R2 86 SSP1_DATA2
SSP1_DATA2/I2C_SDA/JTAG_RTCK
560R 87 SSP1_DATA3 3.3VIO
SSP1_DATA3/SPI1_SS#/JTAG_TMS
90 SSP1_SCK R20 1M
MicroSD
SSP1_SCK/SPI1_SCK/JTAG_TRST SD
SSP1_DATA3
MICRO
MCIMX233CAG4C NA(WU08S)
2 SSP1_DATA2 8
CD/DAT3/CS
R21
SSP1_CMD SSP1_CMD 3 SSP1_DATA3 7
CMD/DI
6 SSP1_CMD 6
10k VSS
C29 SD_VCC 4 SD_VCC 5
VDD
Debug: UART or SJTAG RA1206_(4X0603)_4B8_100K SSP1_SCK 22uF/6.3V 5 SSP1_SCK 4
CLK/SCLK
Headphones and Line-In RM1G2 SSP1_DATA0 SSP1_DATA0 7 3
DAT0/DO
3.3VIO RM1G3 SSP1_DATA1 SSP1_DATA1 8 SSP1_DATA0 2
DAT1/RES
Headphones resistance Rl = Rr = 16 Ohms!
RM1G1 SSP1_DATA2 SSP1_DATA2 1 SSP1_DATA1 1
DAT2/RES
HEADPHONES L6
1 CL470nH/0805/1.76R/250mA
JTAG
3-R C81
R1 22uF/6.3V
4 100k
U_DEBUG SJTAG
2-L
3.3VREG
5-GND 1 PWM0/DUART_RXD 1
2 PWM1/DUART_TXD 2
3 GND 3 SJTAG_PSW
R4 R3
4 DEBUG 4 DEBUG
120R 120R AUDIO_JACK_5PINPJ-W47S-05D2-LF_V2
POWER/REC Button
HN1X4 (NA)HN1X4
LINE_IN PWR_BUT
1
1uF C28 10k R6 PSWITCH R23 1k SJTAG_PSW 1 2 VDDXTAL
3-R
RM1G4
1uF C27 10k R5 4 TV-06B
UEXT
RA1206_(4X0603)_4B8_100K
2-L 2
5-GND 1
REC
3.3VREG 3.3VREG 100nF C40 1k R24 10k R25
NA(HN1x2) 3.3VIO
R8 R7 AUDIO_JACK_5PINPJ-W47S-05D2-LF_V2
4.7k 4.7k
R11 R13 R12
2.2k UEXT 47k 2.2k
1 2
3.3VIO
D2
AUART1_TXD 3 4 AUART1_RXD
Place T1 and T2 as close as COMPOSITE_VIDEO
I2C_SCL 5 6 I2C_SDA
possible to Q1 R26 BAT54S
Reset Circuit PIN9/LCD_D08/SSP2_MISO 7 8 SSP2_MOSI
0R
3.3VIO BC846B SSP2_SCK 9 10 PIN12/LCD_D11/UEXT_CS
0R(Board_Mounted)
RESET XTALI T2
BH10R PIN28/SOFT_SDA3 1
RESET
1 2 R9 47k PIN29/SOFT_SCL 3 1 PIN22/LCD_EN/I2C_SCL C78
VIDEO_CON
SDA_SW/SDA_HW
R10 47k
TV-06B SCL_SW:Close/SCL_HW:Open
SDA_SW:Close/SDA_HW:Open
47pF
XTALO
SCL_SW/SCL_HW
PIN21/LCD_HSYNC/I2C_SDA Composite Video
T1
BC846B
BAT
3.3VREG
AVCC
LIPO_BAT
VIN
POWER SUPPLY CIRCUIT
L4 + 1
6-16VDC +5VEXT
2
U3
IRLML6402
FB0805/600R/2A -
PWR
C41 100nF 19 5 C53 100nF U5
DW02S FET1 L2
VDD33IO VDD33A YDJ-1136
27 10 2 1 C70 10nF
C42 100nF C54 100nF LI-ION_BATTERY 10uH/3.15A/20% 5V_E
VDD33IO VDD33A IN BS
R42 47k
C43 100nF 33 49 C55 100nF 7 3 1 2
VDD33IO EN
VDD33A SW
C44 100nF 39 51 C56 100nF 8 5
VDD33IO SS
VDD33A FB Close
C45 100nF 46 54 C57 100nF 4 6 C71 3.3nF R22
VDD33IO GND
VDD33A COMP R45
57 C58 100nF
1k
VDD33A 4.99k/1%
15 64
C46 100nF C59 100nF MP1482DS
VDD18CORE
VDD33A
C47 100nF 38
VDD18CORE
GND
C48 4.7uF R43 R44
C49 100nF 48 100uF/16V/LOWESR/105C/6.3x11mm_RM2.5
2.2k 1.1k/1%
VDD18ETHPLL
C50 4.7uF FB0805/600R/2A 62 65 C76
VDD18USBPLL VSS(FLAG)
L3 +
AVCC
GND_PIN
R46 10k 11 58 USB_DM USB_PWR_A 1.1
VBUS_DET
3.3VREG USBDM0
R27 12k/1% 63 59 USB_DP 1.2
USBRBIAS
USBDP0
1.3
14 1 1.4
PRTCTL2
PRTCTL2
USBDM2 3.3VREG 3.3VIO
PRTCTL3 16 2
PRTCTL3
USBDP2 +5VEXT
17 3 USB_PWR_B 2.1 L5
NC
USBDM3
18 4 2.2
NC
USBDP3
6 2.3
NC
R28 12.4k/1% 50 7 + 2.4
U6 2.2uH/2.6A 3.3V_E 3.3VIO_E
EXRES
NC
R29 10k 41 8 GND 4 3 1 2 1 2
AUTOMDIX_EN C77 IN
3.3VREG NC LX
9 100uF/16V/LOWESR/105C/6.3x11mm_RM2.5 3.3VREG
NC Close Open
13 LAN 1 5
TEST1 EN FB
34 25 R36 560R RJLD-043TC R47
C74
TEST2 EEDO
1:1
40 26 1 C73 2
TEST3 TD+ 1 GND 4.99k/1%
3.3VREG R30 EEDI 75 75
NA 47 24 3 22pF
TEST4 TCT 4
EECS
R31 10k 23 2 SY8008C(AA)C
TD- 5
EECLK
PIN18/LCD_D17/LAN_RES R32 12 AG
0R 2
0R(Board_Mounted) NRESET AG
33pF C51 52 R34 560R KG GREEN
KG
RXP
61 53 R35 560R AY
XI AY R48
RXN YELLOW
Q2 KY
KY 1:1 3 1.1k/1%
Q25.000MHz/HC-49SM
60 55 7 75 75
XO RD+ 7
TXP
33pF C52 56 6
TXN RCT 8
28 8
NTRST RD- 1nF/2kV 6
29 20
TMS L7 +5VEXT
3.3VREG NFDX_LED/GPIO0
30 21 USB_PWR_A
TDI
NLNKA_LED/GPIO1 U4
31 22
FB0805/600R/2A
TDO NSPD_LED/GPIO2
32 35 1 8
TCK GPIO3 ENA OUT_A
3.3VREG
36 PRTCTL2 2 7 C61
FLAG_A
GPIO4 IN
37 PRTCTL3 3 6 OLinuXino-MAXI revision B1
FLAG_B
GPIO5 GND
45 42 4 5 10uF/10V
CLK24_OUT ENB
GPIO6 OUT_B
44 43
CLK24_EN GPIO7
MIC2026-1YM Designed by OLIMEX 2012
USB_PWR_B
LAN9512-JZX
PHY&USB-HOSTx2
Page 53 of 60
LED/GREEN/3MM
R33
1M
2
USB2 USB1
USB_TWO_LEVEL
USB_HOST
R37 49.9R/1%
C62 15pF
R38 49.9R/1%
C63 15pF
R39 49.9R/1%
C64 15pF
R40 49.9R/1%
C65 15pF
R41 10R/1%
22uF/6.3V C67
C66 22nF
2 100nF C30
GPIO_CON
VIN 100nF C31
BH40R
40 39 +5VEXT
100nF C32
3.3VREG
38 37
PIN34/MIC
36 35 PIN1/LCD_D00 100nF C33
PIN33/LRADC0 34 33 PIN2/LCD_D01
PIN32/LRADC1 32 31 PIN3/LCD_D02
100nF C34
PIN31 30 29 PIN4/LCD_D03
10uF/10V
PIN30 28 27 PIN5/LCD_D04 C35
PIN29/SOFT_SCL 26 25 PIN6/LCD_D05
PIN28/SOFT_SDA 24 23 PIN7/LCD_D06
100nF C36
PIN27/PWM2 22 21 PIN8/LCD_D07
PIN26/LCD_CS PIN9/LCD_D08/SSP2_MISO 10uF/10V
20 19 C37
PIN25/LCD_RS 18 17 PIN10/LCD_D09
PIN24/LCD_WR 16 15 PIN11/LCD_D10
PIN23/LCD_DISP 14 13 PIN12/LCD_D11/UEXT_CS
D
PIN22/LCD_EN/I2C_SCL 12 11 PIN13/LCD_D12
G S PIN21/LCD_HSYNC/I2C_SDA 10 9 PIN14/LCD_D13
RJ45 SIDE
PIN20/LCD_VSYNC 8 7 PIN15/LCD_D14
D3
PIN19/LCD_DOTCLK 6 5 PIN16/LCD_D15
PIN18/LCD_D17/LAN_RES 4 3 PIN17/LCD_D16
SMBJ16A
2 1
470uF/25V/LOWESR/105C BAT
+
C68
22uF/6.3V 100nF C69
R19
1k/1%
100nF C39
R16 10k
22uF/6.3V C72
R1
R2
22uF/6.3V C80
R3
R4
22uF/6.3V C75
22uF/6.3V C79
22uF/6.3V C60 PWR_LED
LED/RED/0603
OLIMEX© 2012 OLinuXino-MAXI user's manual
8.2 Physical dimensions
Note that all dimensions are in inches.
The three highest elements on the board in order from the tallest to the shortest are: inductor L2;
USB host connector; Ethernet/LAN connector.
Page 54 of 60
OLIMEX© 2012 OLinuXino-MAXI user's manual
CHAPTER 9: REVISION HISTORY AND SUPPORT
9. Introduction to the chapter
In this chapter you will find the current and the previous version of the document you are reading.
Also the web-page for your device is listed. Be sure to check it after a purchase for the latest
available updates and examples.
9.1 Document revision
Revision Changes Modified Page#
A,
Initial Creation All
01.06.12
Page 6 - added more info about the WIFI
option on OLinuXino-Mini
Page 10 – added instructions how to blink
the board's LED
Page 20 – removed erroneous information
of compatibility between U_DEBUG
B,
interface and OLIMEX MOD-USB-RS232
6, 10, 20, 28, 35
06.06.12
Page 28 – fixed the table for the Linux
names, there were errors
Page 35 - added new chapter with info
about USB-SERIAL-CABLE
All – edited numerous typos, spelling
mistakes, punctuation etc.
Page 6 – added details about the WIFI
modem
C,
Pages 9,10 – added details on compiling
6, 9, 10
the Linux image
14.06.12
All – changed the names of the chapters
for proper bookmarking in the pdf
Continues on next page
Page 55 of 60
OLIMEX© 2012 OLinuXino-MAXI user's manual
Continued from previous page
Revision Changes Modified Page#
Page 4 - Added links to chapter names
Page 10 – Typos/bugs in code
D, 4, 10, 12, 45
Page 12 – Added new sub-chapter
18.06.12
Page 45 – Added link to the OLinuXino
yahoo group
Page 9, 23 - Added info on how to connect
the USB-SERIAL-CABLE-F to the board
Page 23 - Added errata on specific bug
E,
that might leave the SD card in 9, 23, 37
03.07.12
unrecoverable state
Page 37 - Adjusted info on external and
internal 3.3V DC-DC
Page 8 – changed typo about the needed
programmer
F,
Page 9 – adjusted info about a SD card
8, 9, 23
problem
05.07.12
Page 23 – adjusted U_DEBUG connect info
to make it clearer
G,
10, 11
Pages 10, 11 – Added info about fuse
18.07.12
programming
Pages 3,4 – Added more links and page
H,
numbers
3, 4, 10
12.09.12
Page 10 – Added info about ArchLinux
Page 15 – added info on how to install
ArchLinux, examples and also how to
I,
connect to certain WIFI USB dongles, also 15
19.09.12
added important info about the I2C
jumpers near the UEXT
Continues on next page
Page 56 of 60
OLIMEX© 2012 OLinuXino-MAXI user's manual
Continued from previous page
Revision Changes Modified Page#
J,
Pages 26, 27, 28, 29 - Fixed wrong info
26, 27, 28, 29
about the LQFP128 package of iMX233
29.10.12
K,
Page 11 - Wrong wiring for the fuse burning
11
was present at the picture
04.01.12
Page 6 - fixed the voltages for -MINI and
-MAXI in the comparison table
L, Page 16 - fixed the voltages for -MINI and
6, 16, 58
-MAXI in the comparison table
21.03.13
Page 58 – Updated board change log
Various - links updated
Page 57 of 60
OLIMEX© 2012 OLinuXino-MAXI user's manual
9.2 Board revision
Revision Notable Changes
B Initial release of the board
B1 R14 removed
1. Renamed from iMX233-OLINUXINO_Rev_C to iMX233-OLINUXINO-
MAXI_Rev_C
2. BOOT jumpers moved to bottom of the board and the distance
between them was increased
3. Jumpers 3.3V_E and 3.3VIO_E moved to bottom and the distance
between them was increased
4. Jumpers SW_SCL/HW_SCL and SW_SCK/HW_SCK were made bigger and
default position moved to hardware I2C
C
5. 5V_E jumper moved to bottom
6. The FET located in parallel to power supply was removed
7. Q2 moved away from D1
8. The 40pin GPIO connector symbol was edited so it represents
reality (not symmetrical cut)
9. PWR_JACK and RCA connectors separated further
10. R1 changed from 100k to 4.7k because a Schottky
diode is added on the RX line
C1 C23 i C24 changed from 33pF to 15pf
Page 58 of 60
OLIMEX© 2012 OLinuXino-MAXI user's manual
9.3 Useful web links and purchase codes
The web page you can visit for more info on your device is
https://www.olimex.com/Products/OLinuXino/iMX233/iMX233-OLinuXino-MAXI/.
A place for general questions, FAQ or friendly talk: https://www.olimex.com/forum/index.php?
board=1.0
You can get the latest updates on the software at: https://github.com/OLIMEX/OLINUXINO.
The OLinuXino Linux images sources: https://github.com/Freescale/fsl-community-bsp-platform.
ORDER CODES:
iMX233-OLinuXino-MAXI – the best version of OLinuXino featuring Ethernet controller
iMX233-OLinuXino-MINI – the mini version of the single-board computer
iMX233-OLinuXino-MICRO – tiny in size, tiny in price and perfect for breadbording
iMX233-OLinuXino-MINI-WIFI – the MINI version of OLinuXino + embedded RTL8128CU
WIFI module
iMX233-OLinuXino-SD - SD card with the Linux image which can be used with every board from
the OLinuXino family
MOD-WIFI_RTL8188 – external USB WIFI modem with RTL8188 chip
USB-SERIAL-CABLE - USB serial console cable for U_DEBUG
SY0612E - power supply adapter 12V/0.5A for iMX233-OLinuXino-MAXI and iMX233-
OLinuXino-MINI (Will not work with OLinuXino-MICRO)
SY0605E - power supply adapter 5V/1A for iMX233-OLinuXino-MICRO (Will not work with
iMX233-OLinuXino-MAXI and iMX233-OLinuXino-MINI)
How to order?
You can order to us directly using the e-shop or by any of our distributors.
Check http://www.olimex.com/ for more info.
The full list of distributors can be found here: https://www.olimex.com/Distributors/.
Page 59 of 60
OLIMEX© 2012 OLinuXino-MAXI user's manual
9.3 Product support
For product support, hardware information and error reports mail to: support@olimex.com. Note
that we are primarily a hardware company and our software support is limited.
Please consider reading the paragraph below about the warranty of Olimex products.
Warranty and returns:
Our boards have lifetime warranty against manufacturing defects and
components.
During development work it is not unlikely that you can burn your programmer
or development board. This is normal, we also do development work and we have
damaged A LOT of programmers and boards during our daily job so we know how it
works. If our board/programmer has worked fine then stopped, please check if
you didn't apply over voltage by mistake, or shorted something in your target
board where the programmer was connected etc. Sometimes boards might get
damaged by ESD shock voltage or if you spill coffee on them during your work
when they are powered.
Please note that warrany do not cover problems caused by unproper use, shorts,
over-voltages, ESD shock etc.
If the board has warranty label it should be not broken. Broken labels void
the warranty, same applies for boards modified by the customer, for instance
soldering additional components or removing components - such boards will be
not be a subject of our warranty.
If you are positive that the problem is due to manufacturing defect or
component you can return the board back to us for inspection.
When we receive the board we will check and if the problem is caused due to
our fault and we will repair/replace the faulty hardware free of charge,
otherwise we can quote price of the repair.
Note that all shippings back and forth have to be covered by the customer.
Before you ship anything back you need to ask for RMA. When you ship back
please attach to it your shipping address, phone, e-mail, RMA# and brief
description of the problem. All boards should be sent back in antistatic
package and well packed to prevent damages during the transport.
Page 60 of 60
Manufacturers
What they say about us
FANTASTIC RESOURCE
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Bucher Emhart Glass
EXCELLENT SERVICE
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Fuji
HARD TO FIND A BETTER PROVIDER
Our company provides services to aid in the manufacture of technological products, such as semiconductors and flat panel displays, and often searching for distributors of obsolete product we require can waste time and money. Finding GID Industrial proved to be a great asset to our company, with cost effective solutions and superior knowledge on all of their materials, it’d be hard to find a better provider of obsolete or hard to find products.
Applied Materials
CONSISTENTLY DELIVERS QUALITY SOLUTIONS
Over the years, the equipment used in our company becomes discontinued, but they’re still of great use to us and our customers. Once these products are no longer available through the manufacturer, finding a reliable, quick supplier is a necessity, and luckily for us, GID Industrial has provided the most trustworthy, quality solutions to our obsolete component needs.
Nidec Vamco
TERRIFIC RESOURCE
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Trican Well Service
GO TO SOURCE
When I can't find an obsolete part, I first call GID and they'll come up with my parts every time. Great customer service and follow up as well. Scott emails me from time to time to touch base and see if we're having trouble finding something.....which is often with our 25 yr old equipment.
ConAgra Foods