SB-X255 PC/104+ Single Board Computer Reference Guide Table of Contents 1. REVISION NOTES................................................................................................3 2. INTRODUCTION ..................................................................................................4 2.1. HIGHLIGHTS......................................................................................................4 2.2. BLOCK DIAGRAM ..............................................................................................5 2.3. FEATURES .........................................................................................................6 3. CONNECTOR DESCRIPTION.............................................................................8 3.1. COM1 HEADER (P20).......................................................................................8 3.2. COM3 HEADER (P19).......................................................................................8 3.3. COM4 HEADER (P21).......................................................................................9 3.4. PS/2, CHIP SELECTS & RESET (P18)...................................................................9 3.5. COM, GPIO, TOUCHSCREEN, LPC & SSI HEADER (P16) ................................10 3.6. LPT / FDC HEADER (P17) ..............................................................................10 3.7. IDE – HARD DISK INTERFACE (P9)..................................................................12 3.8. PCMCIA SLOTS (P5, P6) ................................................................................13 3.9. PCMCIA POWER HEADER (P22).....................................................................15 3.10. CRT VGA HEADER (P12)...........................................................................16 3.11. LCD PANEL CONNECTOR (P13)...................................................................16 3.12. USB AND IR INTERFACE HEADER (P15) ......................................................18 3.13. PC/104 CONNECTOR (P3) .............................................................................19 3.14. PC/104+ PCI BUS CONNECTOR (P4)............................................................21 3.15. AUDIO AND POWER HEADER (P14) ..............................................................23 3.16. ETHERNET INTERFACE HEADER (P11)..........................................................24 4. FUNCTIONS IMPLEMENTED ON THE SB-X255 ...........................................26 4.1. RS-232 AND RS-422/485 SERIAL PORT DRIVERS..............................................26 4.2. POWER SUPPLY OPTIONS .................................................................................27 4.3. IDE, PC/104 AND ISA LCD ADDRESSING AND LOGIC .......................................28 4.4. 10/100 MBIT ETHERNET PORT .........................................................................29 4.5. LCD POWER SWITCH.......................................................................................30 4.6. CRT INTERFACE - VIDEO DAC ........................................................................30 5. CONNECTOR LOCATION ................................................................................31 6. OPERATING TEMPERATURE RANGES ........................................................33 SB-X255 PC/104+ Single Board Computer 1. Revision Notes Date Description 13-Oct-2003 § Preliminary release 06-Nov-2003 § Added more description about CRT interface 11-Jan-2004 § Updated IDE interface description 17-Jun-2004 § Added detailed description of RS-422/485 modes 29-Jun-2004 § Minor corrections of signals naming of P13 (LCD) connector 30-Jun-2004 § Updated P16 signals for PCB rev 1.3. Features list updated to reflect CM-X255 version 3 changes 08-Jul-2004 § LCD-R[x] and LCD-B[x] signals indexing of P13 changed, to match CM-X255 indexing. 10-Jul-2004 § Added clarification about COM4 switching between RS-232 and RS- 485 modes. 12-Feb-2005 § Product name changed from ARMBASE to SB-X255 15-Mar-2005 § Made clarification about data bus width (16-bit only) of PC/104 interface. § Removed references to ISA LCD connector from documentation. 18-May-2005 § Updated P16 documentation to include more information about available GPIO's CompuLab LTD. 3 SB-X255 PC/104+ Single Board Computer 2. Introduction 2.1. Highlights § PC/104+ Single Board Computer The SB-X255 is a standard PC/104+ compliant, single board computer. It uses using the CM-X255 module an CM-X255 module to implement most § Intel's XScale PXA255 CPU, up to 400 of the provided functions and also MHz implements several additional important § 16 - 64 MB SDRAM functions on-board. The rich set of features provided by the SB-X255 is § 1 - 128 MB Flash Disk customizable according to the price / performance targets of the user's § PCI and Local Bus expansions in application. PC/104+ format § COM1 - 4 with RS232 / RS485 / The SB-X255 contains PC/104+ RS422 / TTL driver options expansion connectors opening it up to the wide range of standard peripheral § IrDA, LPT, GPIO, PS/2 keyboard and cards. Furthermore, the SB-X255 mouse interfaces contains a PCMCIA controller and slots. § Host and slave USB ports A PCMCIA card may be inserted and secured in the slot, with no additional § Hard and floppy disk interfaces mechanical means. Off-the-shelf § Sound I/O (optional) PCMCIA modules can extend the system with capabilities such as a larger solid § Touchscreen interface (optional) state disk, modem and wireless LAN. § VGA graphics controller. Connectors for LCD panel and CRT monitor (optional) § Single or dual 10/100BaseT Ethernet ports (optional) § Single or Dual PCMCIA slots (optional) § RTC with Lithium battery (optional) § Small size - 96 mm x 91 mm CompuLab LTD. 4 SB-X255 PC/104+ Single Board Computer 2.2. Block Diagram PCMCIA Slot 1 PC/104 - local bus (option P) PCMCIA Slot 0 Std. IDE header,40-pin (option Cx) 100BaseT Ethernet FPC for LCD w/ctrl (option E2) Header,10-pin PCI Bus DAC PC/104+ PCI (option R) Interface Local CRT header,10-pin Graphics Bus & (option V) Ctrl. PCMCIA 100BaseT Interface BUF Ethernet FPC for TFT Header,10-pin Power or STN LCD switch (option L) LPC bus CPU 100-mil header RTC Battery GPIO Audio DMAs codec Std. Audio headers Timers COM-B Interrupts Touch screen ARMMON RS232 COM-A 2x Host Std. COM header USB SDRAM RS232 COM-C Slave USB TTL,RS232 COM-D Flash Disk RS422,485 Std. COM header PS/2 Std. PS/2 headers IrDA FDC LPT Std. header,26-pin Std. IrDA header ARMCORE-GX module 1.5 CompuLab LTD. 5 Buffers & Logic Buffers Buffers SB-X255 PC/104+ Single Board Computer 2.3. Features The "BASE Option" column specifies the P/N code of SB-X255 required for the particular feature. The "CORE Option" column specifies the P/N code of CM-X255 required for the particular feature. SB-X255 content is the combination of features provided by the attached CM-X255 and the features implemented on the SB-X255 itself. To have the particular feature, both the CORE and BASE options of that feature must be implemented. "+" means that the feature is always available, regardless of P/N code. BASE CORE Feature Specification Option Option CPU SDRAM See Features List of CM-X255 module Flash Disk COM 1 Rx/Tx or full modem, RS-232 levels, standard 10-pin header + + COM 2 Rx/Tx only, TTL levels, on common 100-mil header + + COM 3 Full modem, RS-232 levels, standard 10-pin header + B Full modem, RS-232 / RS-485 / RS-422 / TTL level options, COM 4 X B,S standard 10-pin header IrDA SIR and FIR modes. Standard header for IrDA module + + LPT Standard 26-pin header for DB-25 cable/connector. Shared + B, S (Parallel Port) with FDC PIO mode. Derived from local bus. Standard 40-pin header IDE + + for HDD cable FDC Routed through LPT header + B, S One or two 10/100BaseT Ethernet ports. Realtek RTL8139 E1 E controller with MAC and PHY functions, PCI interface. Ethernet or or 10-pin header per port. Optional interface module with E2 B, E transformer, RJ-45 connector and activity LED's. STN and TFT panel support. 51-pos FPC connector for LCD Panel L + direct interface to certain TFT panels RGB signals are derived from TFT interface by using CRT Monitor DAC's. 10-pin header. Optional interface module with V + standard HD-15 VGA connector. Simple LCD 24-pos FPC connector for direct interface to certain STN + + Interf. panels with built-in controller. PS/2 Standard headers for PS/2 cable/connector + B, S GPIO 9 to 14 lines, on common 100-mil header. + + CompuLab LTD. 6 SB-X255 PC/104+ Single Board Computer Support for 16-bit PCMCIA only. The 32-bit CardBus standard is not supported. PCMCIA Cx + Single or dual PCMCIA slot with card guides, for card types I, II and III. Two Host ports, 12 Mbps. Header for Type-A cable/ Host USB + B connector. One Slave port, 12 Mbps. Header for Type-A cable/ Slave USB + + connector. Header for standard cable/connectors for Microphone Sound I/O + A (mono), Line input and Speakers (stereo) Touchscreen 4-wire interface for resistive touchscreens + AT Derived from CPU's local bus through buffers. 20 bit PC104 address. Few interrupts. No DMA Support. Standard PC/104 P + connector PC104+ PCI bus through standard PC/104+ connector R B The battery for Real Time Clock (which is located on the RTC Battery + R CM-X255) LPC bus LPC bus on common 100-mil header + B Electrical, Mechanical and Environmental Specifications Supply 5.0V or 3.3V or both. Voltage (The 3.3V option is only for cards without Audio and Super-I/O chips) Power Up to 3.0 W if powered from 3.3V source Consumption Up to 4.5 W if powered from 5.0V source 96 mm x 91 mm x [10-22] mm. Dimensions Height ranges from 10 mm to 22 mm, depending on the connectors assembled. Height specified includes the CM-X255 module. o o Commercial: 0 to 70 C Operation o o Extended: -20 to 70 C temp (case) o o Industrial: -40 to 85 C Storage o o -40 to 85 C temperature Relative 10% to 90% (operation) humidity 05% to 95% (storage) Shock 50G / 20 ms Vibration 20G / 0 - 600 Hz CompuLab LTD. 7 SB-X255 PC/104+ Single Board Computer 3. Connector Description The SB-X255 uses the attached CM-X255 module to implement most of the provided functions. For these functions, the SB-X255 routes the signals from the CM-X255’s miniature connectors to the standard connectors. Each function’s description is therefore provided in the CM-X255 Reference Guide. The section below provides only the description of the external interface connectors. The subsequent section provides the specifications of those functions implemented on the SB-X255 itself. PCMCIA, PC/104, IDE and ISA LCD buses share the same address/data lines (CPU local bus). However, they usually pass through buffers/termination and their name is changed accordingly to destination function. Here, for clarity, they are mentioned by their original names as they appear on CM-X255 connectors. Some control signals (read/write/chip select) for these buses are generated by onboard logic. See par. 4.3 for details. 3.1. COM1 Header (P20) 2x5, 100 mil header, compatible with a standard DB9 cable/connector. RS-232 levels. Rx/Tx only, modem control lines are not available. Pin Name Pin Name 1 - 2 COM1-RX 3 COM1-TX 4 - 5 GND 6 - 7 - 8 - 9 - 10 - 3.2. COM3 Header (P19) 2x5, 100 mil header, compatible with a standard DB9 cable/connector. RS-232/TTL levels. Includes modem control lines. Pin Name Pin Name 1 COM3-DCD# 2 COM3-RX 3 COM3-TX 4 COM3-DTR# 5 GND 6 COM3-DSR# 7 COM3-RTS# 8 COM3-CTS# 9 COM3-RI# 10 - CompuLab LTD. 8 SB-X255 PC/104+ Single Board Computer 3.3. COM4 Header (P21) 2x5, 100 mil header, compatible with a standard DB9 cable/connector. RS-232 / RS-422/RS485 / TTL levels. Includes modem control lines. Pin Name Pin Name 1 COM4-DCD# 2 COM4-RX 3 COM4-TX 4 COM4-DTR# 5 GND 6 COM4-DSR# 7 COM4-RTS# 8 COM4-CTS# 9 COM4-RI# 10 - 3.4. PS/2, Chip selects & Reset (P18) 1x18, 100 mil header. PS/2 pin assignment is directly compatible with standard cables/connectors. Pin Name Wire Pin Name Wire Color Color 01 VCC5 10 PS2-KCLK Orange 02 VCC-USB3* 11 PS2-KDATA Black 03 - 12 GND Red 04 GND 13 VCC5 Brown 05 PS2-MCLK Orange 14 BOOTCS-OUT 06 PS2-MDATA Black 15 BOOTCS-IN 07 GND Red 16 LB-CS0# 08 VCC5 Brown 17 RST-IN# 09 - 18 GND · See section 3.13 for comments on the VCC-USB3 signal. · BOOTCS signals are reserved for CompuLab’s use. CompuLab LTD. 9 SB-X255 PC/104+ Single Board Computer 3.5. COM, GPIO, Touchscreen, LPC & SSI Header (P16) 2x20 100 mil header P16 Name CAMI CPU P16 Name CAMI CPU pin pin GPIO Pin pin GPIO 01 VCC3-3 - 02 LPC-LAD0 P2-10 03 LPC-LAD1 P2-09 04 LPC-LAD2 P2-12 05 LPC-LAD3 P2-11 06 LPC-LFRM# P2-15 07 LPC-LDRQ# P2-17 08 LPC-SIRQ P2-13 09 (reserved) - 10 GND - 11 MMDAT P2-4 12 SSI-CLK P1-61 [81] 13 MMCMD P1-12 14 SSI-DOUT P1-60 [83] 15 BTRTS-SCIO P1-13 [45] 16 SSI-DIN P1-59 [84] 17 BTCTS-SCCLK P1-16 [44] 18 ILCD-IRQ - 19 WP1# P1-09 20 GND - 21 DREQ0-SCRST P1-15 [20] 22 GPIRQ0 P1-51 [2] 23 DREQ1-SCPWR P1-18 [19] 24 GPIRQ1 P1-54 [12] 25 PC104-BUFEN# - 26 VCC3-3 - 27 TS-XP P1-53 28 TS-XM P2-71 29 TS-YP P1-57 30 TS-YM P2-73 31 SUSPEND P1-21 32 GND - 33 RS4TD-P - 34 RS4TD-N - 35 RS4RD-P - 36 RS4RD-N - 37 GND - 38 RST-OUT# P1-137 39 COM2-TX 40 COM2-RX Notes § DREQ0-SCRST, DREQ1-SCPWR, GPIRQ0 & GPIRQ1 lines are by default driven by PC104 bus. If needed for other purposes, these lines can be disconnected from the PC104 bus by shorting pins 25 & 26 of P16. § Pins 12, 14 and 16 are sampled by ARMmon during powerup, altering ARMmon function. For details please see ARMmon documentation. § CPU GPIO column indicates GPIO reference number as specified in PXA255 manual. § LPC pins can also be programmed as GPIO's. 3.6. LPT / FDC Header (P17) 2x13, 100 mil header, directly compatible with a standard LPT cable/connector. This header is used for two different functions: 1. LPT - Parallel Port 2. FDD - Floppy Disk Drive interface CompuLab LTD. 10 SB-X255 PC/104+ Single Board Computer Selection between these two functions is performed by software setup. Pin functions change according to the mode selected. When used as an LPT, the connector's pin-out is: Pin Name Pin Name 1 PP-STROBE# 2 PP-ALF# 3 PP-D0 4 PP-ERROR# 5 PP-D1 6 PP-INIT# 7 PP-D2 8 PP-SLCTIN# 9 PP-D3 10 GND 11 PP-D4 12 GND 13 PP-D5 14 GND 15 PP-D6 16 GND 17 PP-D7 18 GND 19 PP-ACK# 20 GND 21 PP-BUSY 22 GND 23 PP-PE 24 GND 25 PP-SLCT 26 - When used as an FDC, the header's pin-out is: Pin Name Pin Name 1 - 2 DENSEL 3 INDEX 4 HDSEL 5 TRK0 6 DIR 7 WP 8 STEP 9 RDATA 10 GND 11 DSKCHG 12 GND 13 - 14 GND 15 MTR0 16 GND 17 MEDIA-ID0 18 GND 19 - 20 GND 21 - 22 GND 23 WDATA 24 GND 25 WGATE 26 - A ready-to-use LPT (26-pin) to FDD (34-pin) connector format adapter is available from CompuLab. CompuLab LTD. 11 SB-X255 PC/104+ Single Board Computer 3.7. IDE – Hard Disk Interface (P9) Standard 40-pin header, directly compatible with an IDE flat cable Pin IDE signal CM-X255 Pin IDE signal CM-X255 connector connector pin name pin name 1 RESET# RST-OUT# 2 GND GND 3 DATA7 LB-D7 4 DATA8 LB-D8 5 DATA6 LB-D6 6 DATA9 LB-D9 7 DATA5 LB-D5 8 DATA10 LB-D10 9 DATA4 LB-D4 10 DATA11 LB-D11 11 DATA3 LB-D3 12 DATA12 LB-D12 13 DATA2 LB-D2 14 DATA13 LB-D13 15 DATA1 LB-D1 16 DATA14 LB-D14 17 DATA0 LB-D1 18 DATA15 LB-D15 19 GND GND 20 KEY N/C 21 DMAREQ N/C 22 GND GND 23 IOW# LB-IDE-WR# 24 GND GND 25 IOR# LB-IDE-RD# 26 GND GND 27 IOCHRDY LB-IORDY 28 CSEL GND 29 DMAACK# N/C 30 GND GND 31 IRQ IDE-INT 32 IOCS16# N/C 33 ADDR1 LB-A1 34 PDIAG N/C 35 ADDR0 LB-A3 36 ADDR2 LB-A2 37 CS0# IDE-CS#0* 38 CS1# IDE-CS#1* 39 DASP# Pullup, LED 40 GND GND Note: · Signals marked in [GRAY] are not supported. · Signals marked with (*) are generated by onboard logic. See par. 4.3 for details. CompuLab LTD. 12 SB-X255 PC/104+ Single Board Computer 3.8. PCMCIA slots (P5, P6) 68-pin PC Card slots which conform to the PCMCIA standard. They include card guides. The SB-X255 can be assembled with either no, one or two PC Card slot(s). Pin PCMCIA CM-X255 Pin PCMCIA CM-X255 Signal connector Signal connector pin name pin name 1 GND GND 35 GND GND 2 D3 LB-D3 36 CD1# PCM-CDA-# 3 D4 LB-D4 37 D11 LB-D11 4 D5 LB-D5 38 D12 LB-D12 5 D6 LB-D6 39 D13 LB-D13 6 D7 LB-D7 40 D14 LB-D14 7 CE1# PCM-CE1# 41 D15 LB-D15 8 A10 LB-A10 42 CE2# PCM-CE2# 9 OE# PCM-MEMR# 43 VS1# N/C 10 A11 LB-A11 44 IOR# PCM-IOR# 11 A9 LB-A9 45 IOW# PCM-IOW# 12 A8 LB-A8 46 A17 LB-A17 13 A13 LB-A13 47 A18 LB-A18 14 A14 LB-A14 48 A19 LB-A19 15 WE# PCM-MEMW# 49 A20 LB-A20 16 RDY#/IREQ# PCM-IRQ1[2]* 50 A21 LB-A21 17 VCC VCC-P1(see par. 3.9) 51 VCC VCC-P1(see par. 3.9) 18 VPP1 5V 52 VPP2 5V 19 A16 LB-A16 53 A22 LB-A22 20 A15 LB-A15 54 A23 LB-A23 21 A12 LB-A12 55 A24 LB-A24 22 A7 LB-A7 56 A25 LB-A25 23 A6 LB-A6 57 VS2# N/C 24 A5 LB-A5 58 RESET PCM-RST# 25 A4 LB-A4 59 WAIT PCM-WAIT# 26 A3 LB-A3 60 INPACK# N/C 27 A2 LB-A2 61 REG# PCM-REG# 28 A1 LB-A1 62 BVD2/SPK N/C 29 A0 LB-A0 63 BVD1/STS N/C 30 D0 LB-D0 64 D8 LB-D8 31 D1 LB-D1 65 D9 LB-D9 32 D2 LB-D2 66 D10 LB-D10 33 WP/IOIS# PCM-IOS16# 67 CD2# N/C 34 GND GND 68 GND GND CompuLab LTD. 13 SB-X255 PC/104+ Single Board Computer Notes § Signals marked in [GRAY] are not supported. § There are two different interrupt lines PCM-IRQ1 and PCM-IRQ2, one for each slot. PCMCIA slot types § In single slot assembly, the slot can accommodate all types of PCMCIA cards - Type I, II or III. § In dual slot assembly, the inner slot can accommodate Type I and II cards only, due to height limitation, while the outer slot can accommodate all types. CompuLab LTD. 14 SB-X255 PC/104+ Single Board Computer 3.9. PCMCIA Power Header (P22) This header is used to set the VCC voltage for PCMCIA/CompactFlash cards in the PCMCIA slots. The SB-X255 does not support automatic voltage setup, so the user is responsible for setting the correct VCC voltage before inserting the card, by shorting the appropriate pins on P22. VPP is constant at 5V. Pin Signal 1 VCC5 2 VCC-P1 3 VCC3-3 4 VCC3-3 5 VCC-P2 6 VCC5 For slot 0: Required VCC voltage Pins shorted 5V 1-2 3.3V 2-3 CompuLab LTD. 15 SB-X255 PC/104+ Single Board Computer For slot 1: Required VCC voltage Pins shorted 5V 5-6 3.3V 4-5 Attention!!! Do not forget to set the correct voltage before inserting a card, otherwise permanent damage can be caused to the PCMCIA card and to the SB-X255. If you are not sure which VCC setting is correct, set it to 3.3V. 3.10. CRT VGA Header (P12) 2x5, 100 mil header for connection of a 10-wire flat cable to the DB-15 connector. A flat cable to DB-15 adapter is available from CompuLab. Pin Name Pin Name 1 GND 2 CRT-R 3 GND 4 CRT-G 5 GND 6 CRT-B 7 GND 8 VSYNC (LCD-FRM) 9 VCC3 10 HSYNC (LCD-LP) RGB signals are generated from TFT signals, by the on-board DAC. VSYNC and HSYNC are generated from the LCD-FRM and LCD-LP signals. See note regarding SYNC signals availability in "LCD Panel Connector" section below. 3.11. LCD Panel Connector (P13) 51-pos FPC connector for TFT and STN panels. An adapter for direct interface to certain panels (such as LP064V1) is available from CompuLab. Pin Name Pin Name 01 LCD-VDD 27 LCD-VDD 02 LCD-VDD 28 LCD-VDD 03 GND 29 GND 04 LCD-R1 30 LCD-B1 05 GND 31 GND 06 LCD-R2 32 LCD-B2 07 LCD-R3 33 LCD-B3 08 GND 34 GND 09 LCD-R4 35 LCD-B4 CompuLab LTD. 16 SB-X255 PC/104+ Single Board Computer 10 LCD-R5 36 LCD-B5 11 GND 37 GND 12 GND 38 GND 13 GND 39 GND 14 GND 40 GND 15 GND 41 GND 16 LCD-G0 42 LCD-LP 17 LCD-G1 43 LCD-FRM 18 GND 44 LCD-DE 19 LCD-G2 45 GND 20 LCD-G3 46 LCD-SCK 21 GND 47 GND 22 LCD-G4 48 (pullup) 23 LCD-G5 49 (pullup) 24 GND 50 LCD-VDD 25 GND 51 LCD-VDD 26 GND § ENVEE and ENVDD functions (regularly on pins 48, 49) are not supported by CM- X255 / SB-X255. § SYNC signals availability: P15 connector (see "USB and IR Header" section) contains LCD / CRT supply selection pins - VSRCLCD ("Voltage Source for LCD"), which is routed to the LCD power supply pins - LCD-VDD. User can select either 3.3V or 5V supply by placing a jumper on pins 1-2 or 2-3 of P15. The same supply voltage feeds on-board LCD signal drivers, including data and sync. Note that is jumper if not mounted, there would not be sync signals for CRT, which will prevent its operation. CompuLab LTD. 17 SB-X255 PC/104+ Single Board Computer 3.12. USB and IR Interface Header (P15) 1x26, 100 mil header containing an interface of several different functions. Signal pinouts of each function are compatible with standard cables/connectors. Pin Name Description Pin Name Description 01 VCC3 LCD / CRT voltage 16 VCC-USB3 USB device supply selection. interface 02 VSRC-LCD 17 USB3-N Jumper must be 03 VCC5 18 USB3-P mounted in either 04 - 19 GND 1-2 or 2-3 position. 05 GND 20 SHIELD 06 VCC-USB1 USB1 interface 21 VCC5 IR module interface 07 USB1-N 22 - 08 USB1-P 23 IRDA-RX 09 GND 24 GND 10 SHIELD 25 IRDA-TX 11 VCC-USB2 USB2 interface 26 - 12 USB2-N 13 USB2-P 14 GND 15 SHIELD Notes § USBx-VCC pins have overcurrent protection as required by USB standard specifications. § USB3 is a Slave USB device interface. VCC-USB3 is power input from the USB bus. If desired it can be connected to the VCC5 voltage network using pins 1-2 of P18 and provide power to the SB-X255. However, the user should verify that the power consumption of the system falls within the USB spec or should connect an external power supply to the upstream USB hub. CompuLab LTD. 18 SB-X255 PC/104+ Single Board Computer 3.13. PC/104 connector (P3) PC/104 (ISA bus type) stackthrough connector. Provides limited ISA-like functionality. The CM-X255's local bus lines are connected through buffers to their respective counterparts on the PC/104 connector. Supports 16-bit data transfers only, the 8-bit transfers are not supported. Pin PC/104 Signal CM-X255 Pin PC/104 Signal CM-X255 connector connector pin name pin name A01 IOCHCHK# N/C B01 GND GND A02 SD7 LB-D7 B02 RESETDRV RSTDRV A03 SD6 LB-D6 B03 +5V VCC5 A04 SD5 LB-D5 B04 IRQ9 GPIRQ0 (using NOR gate) A05 SD4 LB-D4 B05 -5V N/C A06 SD3 LB-D3 B06 DRQ2 N/C A07 SD2 LB-D2 B07 -12V N/C A08 SD1 LB-D1 B08 0WS# N/C A09 SD0 LB-D0 B09 +12V N/C A10 IOCHRDY LB-IORDY B10 KEY N/C A11 AEN GND B11 SMEMW# ISA-WR#* A12 SA19 LB-A19 B12 SMEMR# ISA-RD#* A13 SA18 LB-A18 B13 IOW# ISA-IOW#* A14 SA17 LB-A17 B14 IOR# ISA-IOR#* A15 SA16 LB-A16 B15 DACK3# Pullup A16 SA15 LB-A15 B16 DRQ3 N/C A17 SA14 LB-A14 B17 DACK1# Pullup A18 SA13 LB-A13 B18 DRQ1 N/C A19 SA12 LB-A12 B19 REFRESH Pullup A20 SA11 LB-A11 B20 SYSCLK CLK8M hz A21 SA10 LB-A10 B21 IRQ7 GPIRQ0 (using NOR gate) A22 SA9 LB-A9 B22 IRQ6 GPIRQ0 (using NOR gate) A23 SA8 LB-A8 B23 IRQ5 GPIRQ1 (using NOR gate) A24 SA7 LB-A7 B24 IRQ4 GPIRQ1 (using NOR gate) A25 SA6 LB-A6 B25 IRQ3 GPIRQ1 (using NOR gate) A26 SA5 LB-A5 B26 DACK2# Pullup A27 SA4 LB-A4 B27 TC GND A28 SA3 LB-A3 B28 BALE Pullup A29 SA2 LB-A2 B29 +5V VCC5 A30 SA1 LB-A1 B30 OSC CLK16M hz A31 SA0 LB-A0 B31 GND GND CompuLab LTD. 19 SB-X255 PC/104+ Single Board Computer A32 GND GND B32 GND GND Pin PC/104 Signal CM-X255 Pin PC/104 Signal CM-X255 connector connector pin name pin name C00 GND GND D00 GND GND C01 SBHE# GND D01 MEMCS16# N/C C02 LA23 LB-A23 D02 IOCS16# N/C C03 LA22 LB-A22 D03 IRQ10 GPIRQ1 (using NOR gate) C04 LA21 LB-A21 D04 IRQ11 GPIRQ1 (using NOR gate) C05 LA20 LB-A20 D05 IRQ12 N/C C06 LA19 LB-A19 D06 IRQ15 N/C C07 LA18 LB-A18 D07 IRQ14 N/C C08 LA17 LB-A17 D08 DACK0# Pullup C09 MEMR# ISA-RD#* D09 DRQ0 N/C C10 MEMW# ISA-WR#* D10 DACK5# Pullup C11 SD8 LB-D8 D11 DRQ5 N/C C12 SD9 LB-D9 D12 DACK6# Pullup C13 SD10 LB-D10 D13 DRQ6 N/C C14 SD11 LB-D11 D14 DACK7# Pullup C15 SD12 LB-D12 D15 DRQ7 N/C C16 SD13 LB-D13 D16 +5V C17 SD14 LB-D14 D17 MASTER# Pullup C18 SD15 LB-D15 D18 GND GND C19 KEY N/C D19 GND GND Signals marked in [GRAY] are not supported. In general, functionality of the PC104 bus of the SB-X255 has the following limitations: § DMA channels are not supported. § Only eight interrupt inputs are supported. § Some signals of secondary importance are not supported: MEMSC16, IOCS16#, BALE. The irrelevant signal REFRESH is also not supported. § Signals marked with (*) are generated by onboard logic. See par. 4.3 for details. CompuLab LTD. 20 SB-X255 PC/104+ Single Board Computer 3.14. PC/104+ PCI bus connector (P4) Standard PC/104+ (PCI bus) connector. The CM-X255's PCI bus lines are connected to their respective counterparts on the PC/104+ connector. All non-obvious connections are mentioned in notes. Pin Name Notes Pin Name Notes A01 KEY2 n/c B01 (reserved) A02 V I/O 3.3V B02 AD02 A03 AD05 B03 GND A04 CBE0# B04 AD07 A05 GND B05 AD09 A06 AD11 B06 V I/O 3.3V A07 AD14 B07 AD13 A08 +3.3V B08 CBE1# A09 SERR# B09 GND A10 GND B10 PERR# Pullup A11 STOP# B11 +3.3V A12 +3.3V B12 TRDY# A13 FRAME# B13 GND A14 GND B14 AD16 A15 AD18 B15 +3.3V A16 AD21 B16 AD20 A17 +3.3V B17 AD23 A18 IDSEL0 AD28 via 150R B18 GND A19 AD24 B19 CBE3# A20 GND B20 AD26 A21 AD29 B21 +5.0V A22 +5.0V B22 AD30 A23 REQ0# B23 GND A24 GND B24 REQ2# N/C A25 GNT1# B25 V I/O 3.3V A26 +5.0V B26 CLK0 A27 CLK2 B27 +5.0V A28 GND B28 INTD# PCI-INTB# A29 +12V N/C B29 INTA# A30 -12V N/C B30 (reserved) CompuLab LTD. 21 SB-X255 PC/104+ Single Board Computer Pin Name Notes Pin Name Notes C01 +5.0V D01 AD00 C02 AD01 D02 +5.0V C03 AD04 D03 AD03 C04 GND D04 AD06 C05 AD08 D05 GND C06 AD10 D06 M66EN GND C07 GND D07 AD12 C08 AD15 D08 +3.3V C09 SB0# N/C D09 PAR C10 +3.3V D10 SDONE N/C C11 LOCK# Pullup D11 GND C12 GND D12 DEVSEL# C13 IRDY# D13 +3.3V C14 +3.3V D14 CBE2# C15 AD17 D15 GND C16 GND D16 AD19 C17 AD22 D17 +3.3V C18 IDSEL1 AD29 via 150R D18 IDSEL2 AD30 via 150R C19 V I/O D19 IDSEL3 AD31 via 150R C20 AD25 D20 GND C21 AD28 D21 AD27 C22 GND D22 AD31 C23 REQ1# D23 V I/O C24 +5.0V D24 GNT0# C25 GNT2# N/C D25 GND C26 GND D26 CLK1 C27 CLK3 D27 GND C28 +5.0V D28 RST# C29 INTB# D29 INTC# PCI-INTA# C30 (reserved) D30 KEY2 N/C Note INTA# is shorted with INTC#, and INTB# is shorted with INTD# due to the limited number of available interrupt inputs on the CM-X255. This limitation has no practical effect on the card's functionality. CompuLab LTD. 22 SB-X255 PC/104+ Single Board Computer 3.15. Audio and Power Header (P14) 1x18, 100 mil header having two functions: audio input/output and power supply entry. If audio codec is not assembled on the CM-X255, then the AC’97 bus is routed to audio pins. Pin Name Description Pin Name Description 01 OUT-R Audio output 12 VBAT RTC supply [AC97-SYNC] [AC97 signals] 02 GND 13 GND 03 GND 14 SPDIF digital audio output 04 OUT-L 15 GND [AC97-SDIN] 05 IN-R Line input 16 VCC5 [AC97-SDOUT] [AC97 signals] 06 GND 17 VCC3 07 GND 18 GND 08 IN-L* 09 MIC-VCC Microphone input [AC97 signals] 10 GND 11 MIC-IN [AC97-BITCLK] Notes § MIC-IN and IN-L signals are connected together; consequently, microphone recording and line-in recording can’t be done simultaneously. § For certain configurations, the VCC3 is optional and for another configurations, the VCC5 is optional. For details, see the "Power Supply Options" section. CompuLab LTD. 23 SB-X255 PC/104+ Single Board Computer 3.16. Ethernet Interface Header (P11) The Ethernet Interface Header provides two separate groups of signals, one per Ethernet port available in the CM-X255 / SB-X255 system. The first port (ETH1) is implemented on the CM-X255 and the second, on the SB-X255. Pin Name Pin Name 1 ETH2-LINK10# 2 ETH2-TDN 3 ETH2-TDP 4 ETH2-LINK10# 5 ETH2-ACT# 6 ETH2-LINK100# 7 ETH2-RDSHLD 8 ETH2-RDP 9 ETH2-RDN 10 ETH2-RDSHLD 11 - 12 - 13 - 14 - 15 ETH1-LINK10# 16 ETH1-TDN 17 ETH1-TDP 18 ETH1-LINK10# 19 ETH1-ACT# 20 ETH1-LINK100# 21 ETH1-RDSHLD 22 ETH1-RDP 23 ETH1-RDN 24 ETH1-RDSHLD The header is designed for the connection of two separate 10-wire flat cables, one per port. The flat cable connects the header to the RJ-45 interface module, which includes the RJ-45 connector, transformer and activity LED’s. An RJ-45 interface module is available from CompuLab. Default settings of activity LEDs are specified in the table below. Settings can be changed by software. LED0 RX/TX LED1 Link 100 LED2 Link 10 Note: LED signal wires in flat cable are also used as secondary shielding, so their locations on the header may appear non-obvious. CompuLab LTD. 24 SB-X255 PC/104+ Single Board Computer The LED signal connections as implemented in CompuLab's RJ-45 interface module are: R1 300R/1% LED0 DS5 DS4 LED-RED LED-GREEN 100M Link/Act 10M Link/Act LED1 LED2 This connection supplies full information about speed / link / activity. LED-RED : 100 Mbps activity indicator LED-GREEN : 10 Mbps activity indicator Activity LED (Red/Green) none off Link (only) on Tx / Rx (and Link) blink CompuLab LTD. 25 SB-X255 PC/104+ Single Board Computer 4. Functions Implemented on the SB-X255 Most of the functions are implemented by the attached CM-X255 module, while the SB- X255 board provides headers to standard cables/connectors. However, several additional functions are implemented on the SB-X255 itself and this section describes them. 4.1. RS-232 and RS-422/485 Serial Port Drivers The CM-X255 module has on-board RS-232 drivers for the Tx/Rx signals of the COM1 port. Other serial ports of the CM-X255 have TTL level interface. The SB-X255 adds several driver options for some of the serial ports as specified in the table below. Driver support includes modem control lines. Port Modem CM-X255 Origin Level options control name RS RS TTL 232 422/485 COM1 - COM-A PXA255 + - - COM2 - COM-B PCI bridge - - + COM3 + COM-C PXA255 + - + COM4 + COM-D SIO + + + COM5 - IrDA PXA255 - - + Notes § COM5 is shared with the IR port. § If the SB-X255 is assembled with no drivers for a particular COM port, then port signals are available with TTL levels. § The interface of COM4 port can be either RS-232 or RS-422/485 or both, controlled by assembling the appropriate driver chips. Assembling is done according to SB-X255's configuration code: [none] - drivers are not assembled, "X2" - only RS-232 drivers assembled, "X4" - only RS422/485 drivers assembled, "X6" - both RS-232 and RS- 422/485 drivers assembled. RS-422 and RS-485 modes of COM4 The SB-X255 contains RS-422/485 drivers if its configuration code has "X4" or "X6" option. In case of "X6" option, when both RS-232 and RS422/485 drivers present, the SB- X255 will automatically switch into RS-232 mode on presence of valid voltage levels on RS-232 RX input. In absence of valid input, the card will switch to RS-422/485 mode. CompuLab LTD. 26 SB-X255 PC/104+ Single Board Computer In RS-422/485 modes, TXD outputs of the COM4 port are enabled by RTS4 signal. RTS "1" level enables TX output, RTS "0" disables it. In RS-485 (half duplex) mode, transmit and receive operations are performed on TX lines. To achieve this, user have physically connect RX and TX lines of the serial driver, i.e. RX+ to TX+ and RX- to TX-. In this case selection between receive and transmit operations is performed by RTS. In RS-422 (full duplex) mode, transmit and receive operations are performed on separate line pairs. TX output can be always enabled, though qualifying it by RTS has no practical effect on system operation. RX and TX lines should not be connected together as in case of RS-485. For better understanding of RS-422/485 driver operation, please refer to SB-X255 design schematics, available following [developer] >> [CM-X255] >> [Hardware] links in CompuLab's web-site. 4.2. Power Supply Options The SB-X255 has an optional on-board 5V-to-3.3V linear converter. Supply voltage options are: 1. 3.3V only In this case, the converter is not assembled. This option can be used only if the selected CM-X255 module doesn’t contain "A" option (the "AT" option is okay). Unused 5V power input should be connected to 3.3V. Note: in this case, USB terminations and LPT terminations are connected to 3.3V instead of nominal 5V. While in general they will work, non-standard termination voltage can affect the reliability of related functions. 2. 3.3V and 5.0V This option is the same as (1), but it supports all types of CM-X255 configurations, without the above-mentioned restrictions. 3. 5.0V only In this case, a 5V-to-3.3V linear converter is assembled on the SB-X255. Supports all types of CM-X255 configurations. Bypassing the on-board converter: If 3.3V is applied on the power entry connector, the on-board 5V-to-3.3V converter is disabled automatically and doesn't interfere with externally applied power. CompuLab LTD. 27 SB-X255 PC/104+ Single Board Computer Power output specifications: 5V to 3.3V converter maximum output current: 3 A Power entry specifications: Power Maximum allowed Input entry pins input current tolerance 5.0V 3 A 5 % 3.3V 3 A 5 % Converter and power entry specifications are designed in excess of CM-X255/BASE requirements. Maximum current drawn by the CM-X255 and SB-X255 together is less than 1 A and maximum power consumption is less than 5 watt. The spare power can be consumed by attached PC/104 or PCMCIA cards. 4.3. IDE, PC/104 and ISA LCD addressing and logic SB-X255 implements address decoding logic which uses a IDE-CS1# signal from the CM- X255 for driving a number of control signals (OE#, WE#, CS#) to the PC/104, IDE and ISA LCD buses. Below is a memory address map for the above buses and appropriate active control signals: Description Address range Active control signals PC/104 memory 0x0C000000-0x0CFFFFFF ISA-RD#, ISA-WR# access region PC/104 IO access 0x0D000000-0x0DFFFFFF ISA-IOR#, ISA-IOW# region IDE CS0 region 0x0E000000-0x0E3FFFFF IDE-CS#0, IDE-RD#, IDE-WR# IDE CS1 region 0x0E400000-0x0E4FFFFF IDE-CS#1, IDE-RD#, IDE-WR# ISA LCD region 0x0E800000-0x0E8FFFFF LCD-CS#, IDE-RD#, IDE-WR# CompuLab LTD. 28 SB-X255 PC/104+ Single Board Computer IDE Connection IDE LB address lines (LB_A3-LB_A1) A2-A0 IDE LB data lines (LB_D15-LB_D0) D15-D0 Standard IDE 40 pin IOR# connector LB strobes (LB_IDE_RD#, LB_IDE_WR#, LB_IORDY) IOW# IORDY 74LCX138 CS0# LB-CS1#, LB_A24-LB_A22 CS0#,CS1# decoder CS1# Note for designers of custom baseboards: The 74LCX138 decoder is required only if baseboard implements PC/104 and ISA-LCD, as in SB-X255. If these additional functions are not required, IDE interface can be simplified and decoder can be removed. Refer to "IDE Interface Implementation" section in CM-X255 Reference Guide. But if decoder is removed, IDE Driver in the operating system should be updated according to the resulting change of address map. 4.4. 10/100 Mbit Ethernet Port The SB-X255 contains one full-featured, optional 10/100 Mbit Ethernet port. This is in addition to the optional Ethernet port contained in the CM-X255 module. The user can therefore order the CM-X255 / BASE system with none, one or two Ethernet port(s). The Ethernet interface is based on the Realtek RTL8139 MAC/PHY component. In functional terms, it is identical to the Ethernet port available on the CM-X255. Please refer to the CM-X255 Reference Guide for details. The Ethernet port’s interface to the external world is through a 100 mil interface header. The header is designed for connection to a flat cable with a RJ-45 connector on the other end. The cable and RJ-45 module are available from CompuLab. Note: the operating system assigns the CM-X255's Ethernet to be Port0 and the SB- X255's Ethernet, Port1. CompuLab LTD. 29 ARMCore local bus SB-X255 PC/104+ Single Board Computer 4.5. LCD Power Switch The graphics controller for TFT / STN panels is located on the CM-X255 module. The SB- X255 adds one feature for LCD panel support - the power switch. Most LCD panels require proper power sequencing in order to avoid panel damage. The power switch is controlled by CM-X255’s reset signal and shuts the LCD off while the system is in reset state. LCD Supply selection: User can select 3.3V or 5V supply by placing a jumper on pins 1-2 or 2-3 of P15. 4.6. CRT Interface - Video DAC The SB-X255 implements an interface to CRT monitor by Video DAC, which converts digital data of CM-X255's TFT output to analog RGB signals. Horizontal and vertical synchronization signals are also generated from the TFT interface. All the CRT interface signals are routed to header P12 as described in par. 3.10. The maximum supported resolution is 1024 x 768. Resolutions of 640 x 480 and above are supported with several limitations. The activity of PS/2 ports (keyboard and mouse) and especially the activity of demanding PCI-bus devices, such as an Ethernet port, creates discontinuity in the display pixel stream which appears as "noise" on the display. CRT displays are the most sensitive to such interference. (LCD displays are less sensitive). The noise level depends on display type, the kind of on- board activity, resolution and number of bits per pixel. In order to reduce noise level it is recommended to setup CM-X255's graphics controller to 4- or 8-bits per pixel, rather than 16. The above-mentioned problem exists only in CM-X255 version 2 (CM-X255-V2). It is completely resolved in new version 3 - CM-X255. CompuLab LTD. 30 SB-X255 PC/104+ Single Board Computer 5. Connector Location P15 P22 P18 P4 P19 P1 P11 P2 P16 P10 P17 P21 P12 P3 P20 P14 SB-X255 Top side CompuLab LTD. 31 SB-X255 PC/104+ Single Board Computer P13 P5 P6 SB-X255 Bottom side CompuLab LTD. 32 SB-X255 PC/104+ Single Board Computer Reference P1, P2 CM-X255 CAMI mating connectors P3 PC/104 (Sub-ISA) connector P4 PC/104+ PCI bus connector P5, P6 PCMCIA slot mating connectors P9 IDE – Hard Disk Interface P10 ISA LCD Connector P11 Ethernet Interface Header P12 CRT VGA Header P13 TFT Panel Connector P14 Audio and Power Header P15 USB, IR, LCD power selection P16 COM, GPIO, LPC, Touchscreen, SSI P17 LPT / FDC Header P18 PS/2 & System Control P19 COM3 Header P20 COM1 Header P21 COM4 Header P22 PCMCIA power selection header DS1 Hard disk LED DS2, DS3 Status Leds DS4 Power LED SW1 Reset Switch 6. Operating Temperature Ranges The SB-X255 is available with three options of operating temperature range: o o Commercial 0 to 70 C o o Extended -20 to 70 C o o Industrial -40 to 85 C The cards’ manufacturing and certification method for each option is explained in the "Operating Temperature Ranges" section of the CM-X255 Reference Guide. Availability of Industrial temperature range is not limited to certain functions. However, not all components are certified by manufacturers for industrial temperature grade. The table below lists which functional blocks have components certified by manufacturer. For more information refer to the "Operating Temperature Ranges" section of the CM-X255 Reference Guide. CompuLab LTD. 33 SB-X255 PC/104+ Single Board Computer Component Function certification Ethernet - PCMCIA - RS-232 + RS-422/485 + o o Lithium battery (for RTC) -10 to 85 C According to CM- All other functions X255 spec. The mating CM-X255 module should be ordered for the same as or better than temperature range of the SB-X255. For example, it is not valid to use a SB-X255 manufactured for industrial temp range with a CM-X255 manufactured for commercial temp range. Such a combination is practically limited to the commercial temp range. On the other hand, it is valid to use a CM-X255 manufactured for industrial range while using a SB-X255 manufactured for commercial range, assuming that such a SB-X255 does not contain temperature-dependent functions, as specified in the table above. CompuLab LTD. 34