Psion Teklogix OMNii HDK XT10 User Manual page 105

Pinout
The 22-pin end-cap connector provides access to expansion port 1, with the following pinout:
Table 6.7 Pinout of 22-pin End-Cap Connector
Pin Signal
1 EXP1_3V3
2,6,9,18, GND
20,21,22
3,4,5 EXP1_VSYS
7 EXP1_USB+
8 EXP1_USB-
10 EXP1_RTS_GPIO3
11 EXP1_CTS_GPIO2
12 EXP1_RXD_GPIO1
13 EXP1_TXD_GPIO0
14 EXP1_CS_N_GPIO7 SPI chip select / GPIO pin 7 (Modem DTR)
15 EXP1_SCLK_GPIO6 SPI SCLK / GPIO pin 6 (Modem DSR)
16 EXP1_MISO_GPIO5 SPI MISO / GPIO pin 5 (Modem DCD)
17 EXP1_MOSI_GPIO4 SPI MOSI / GPIO pin 4 (Modem RI)
19 EXP1_1WIRE
Connecting to Expansion Port 1
Expansion port 1 is located on the top edge of the main logic board. There is no latch on this
connector; the cable is held by contact force alone. Push the stiffened end of the flex cable, with
the exposed contacts facing downwards towards the main logic board, straight into the socket until
it is firmly seated.
Chapter 6: Omnii Expansion Ports and Connectors
Function
Power. 100 mA current limited
Ground
Power. Raw unregulated battery voltage
1000 mA current limited
USB Host D+
USB Host D-
Serial RTS / GPIO pin 3
Serial CTS / GPIO pin 2
Serial RXD / GPIO pin 1
Serial TXD / GPIO pin 0
Connection for 1-Wire EEPROM
Expansion Port 1 (End-Cap Connector)
I/O Type
Power
Ground
Power
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Psion Teklogix Omnii HDK User Manual
Voltage
(V)
3.3
3.0-4.2
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
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