High-Density Digital I/O for StackableUSB™ USB3196 Features 9 96 user-controllable TTL-level I/O lines 9 Timers/Counters, switches/LEDs 9 10-bit single-ended/differential A/D 9 Two (2) RS232 serial ports, one (1) each I2C and SPI bus interfaces 9 StackableUSB 2.0 device with stacktogether connector for embedded systems or plug/cable configuration for remote applications The USB3196 operates as a USB 2.0 full- standard USB plug-and-play hardware and speed device in a StackableUSB system or software configuration after installing the connected to a PC using a standard USB software provided for the host computer. cable. Four (4) 82C55’s provide bi- This significantly simplifies user’s system directional general system I/O. In addition, integration. the USB3196 includes two (2) RS232 serial The USB3196 implements many features to ports, one (1) I2C and SPI bus interface, a enhance system reliability. Grounds are 16-bit counter with a capture/compare input, placed between most 82C55 signals. a single comparator, and a 10-bit A/D Software programmable pull ups/downs on converter. The USB3196 provides this each I/O line provide deterministic reset wealth of system I/O on a small 3.55 x 3.755 levels. The USB3196 protects against footprint. power sequencing issues with other boards The USB interface, in the stackable or cable in the stack or system by providing resistors configuration, allows the USB3196 to be on all I/O lines. added into any USB system by using the Software Support Compatible Hardware Mounting/Packaging Windows XP StackableUSB Host single board ENC104-4 Windows CE computers or microcontrollers Standoffs, STDOFFUSB Linux PC Host desktops and laptops 82C55 82C55 AD C8051F340 82C55 MCU 82C55 Technical Details: Four (4) 82C55 digital I/O devices provide 96 board peripherals and the StackableUSB lines of TTL I/O. Direction of the I/O signals is host computer. The USB3196 is USB 2.0 programmable in two (2) 8-bit groups and two compatible and supports both full-speed (12 (2) 4-bit groups for each 82C55. The 82C55 Mbps) and low-speed (1.5 Mbps) transfer TTL I/O line scan source and sink at 2.5mA. rates. The USB3196 comes with pre-installed Other peripherals coming from the software that allows the transfer of data microcontroller include a single-ended or between the USB port and all of the on- differential input A/D with a range of 0 to board peripherals with no need to write 3.3V. Conversions can be triggered from additional code on the USB3196 device side timers or from an external pin. There are two of the system. To ease installation of the (2) serial ports, COM1 and COM2, USB3196 on the host side, USB drivers and configured with RS232 transceivers with the example source code are supplied, TXD and RXD lines supported. Other eliminating the need for prior experience system level housekeeping functions USB experience. Host side operating included on the USB3196 is an interrupt systems supported are Linux, Windows CE, controller and a watchdog timer. and Windows XP. The on-board microcontoller includes 64k of A command and control protocol flash, and 4352 bytes of SRAM which allows implemented over the USB interface allows users to write board specific control routines direct communication with the on-board for the USB3196. Most instructions are peripherals via import and outport driver calls executed in one (1) or two (2) system clock executed on the host computer. Custom cycles, allowing the MCU to achieve interrupt service routine can be called performances as high as 48 MIPS. This directly by the host side USB driver. feature can off load the host CPU of service routines, reserving the USB communication The USB3196 utilizes a microcontroller with link for sending system level commands a built-in USB device controller which acts as rather than directly controlling each event. the communication channel between the on- StackableUSB Timer COM1-2 Counter The StackableUSB bus architecture allows Analog Input: up to five (5) USB peripheral boards to be ‰ 10-bit resolution, successive- stacked above and/or below a single board approximation register ADC computer or hub board, making ten (10) ‰ 0 to 3.3V range board systems with any combination of ‰ Conversion starts from timer or external pin StackableUSB boards possible without the ‰ 200ksps use of a hub. Please call Micro/sys Technical ‰ Single-ended or differential inputs Sales for details. Watchdog Timer: ‰ Program must refresh watchdog timer Specifications: periodically, or system will be reset ‰ Enabled through software Mechanical: ‰ PC/104 mounting holes Debug/Download Interface: ‰ 3.55” (plus I/O region) x 3.775” x .6” ‰ Silicon Laboratories 2-wire C2 interface ‰ Allows programming of program flash or Power Requirements: debugging of user application ‰ +5v ±5% at 320mA max Digital I/O: Environmental: ‰ Four (4) 82C55s provide 96 lines of ‰ Operating range 0°C to +70°C TTL-level digital I/O, 2.5mA source/sink ‰ ET-version operating range -40° to +85°C ‰ Software-configurable pull up/downs on ‰ -40° to +85°C storage I/O for initialization after reset ‰ 5%-95% relative humidity, non-condensing ‰ 470-ohm current limiting resistors ‰ Individual grounds for all signals Microcontroller Core Section: ‰ Silicon Laboratories 8051 Development Kit: ‰ 48MHz clock rate ‰ Base module ‰ Optimized 8051 instruction set ‰ Complete cable set ‰ 64kbytes of flash memory ‰ Documentation, schematics, sample software ‰ 4352bytes of SRAM External Connections: USB Interface: ‰ 14-pin header for COM1-COM2 ‰ USB 2.0 full-speed ‰ Three (3) 50-pin headers for digital I/O ‰ USB device or function controller only ‰ 10-pin header for debug/download (Controller does not operate as a host) ‰ 2-pin removable terminal strip for power Serial Ports: ‰ Two (2) async serial ports ‰ RS232 levels ‰ TXD and RXD signals supported for both ports SMBus/I2C Port: ‰ Configurable as master or slave ‰ Clock speeds up to 4.8MHz SPI Bus: ‰ Single master, single slave only ‰ Clock speeds up to 12.5 MHz Ordering Information: Development Board Kits* . OEM Modules: DK3196-ST-ET High-Density DIO with StackableUSB stackthrough USB3196-ST High-Density DIO board connector, -40° to +85°C with StackableUSB operating temp, Windows- stackthrough connector ready development kit USB3196-ST-ET High-Density DIO board with StackableUSB USB3196-PC-ET High-Density DIO board with stackthrough connector, Mini-B USB connector for -40° to +85°C operating PC connection, -40° to +85°C temperature operating temp, Windows- ready development kit USB3196-PC High-Density DIO board *See Development Kit Specifications with Mini-B USB connector for PC connection USB3196-PC-ET High-Density DIO board with Mini-B USB connector for PC connection, -40° to +85°C operating temperature CS3196 Complete cable set Related Products: CA4089 Breakout cable to two (2) DB9 COM port connectors BA4089 Breakout assembly to two (2) DB9 COM port connectors BA0050 50-pin to 50-pin ribbon cable with 50-point screw terminal breakout board BA0034 34-pin to 34-pin ribbon cable with 34-point screw terminal breakout board CA5049 50-pin to 50-pin ribbon cable CA5050 34-pin to 34-pin ribbon cable Cables nominally 15”, other lengths available