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Pinout
Table 6.15 Pinout of Multi-Function 100-Pin Connector
Pin
1
EXP3_3V3
2, 4, 6
VSYS
3
EXP3_VSYS
5, 8, 10, 11, 12,
GND
22, 36, 49, 53, 54,
57, 61, 65, 78, 94,
99, 100
7
EXP3_USB+
9
EXP3_USB-
13
EXP3_RTS_GPIO3
14
BACKUP_ACTIVE
15
EXP3_CTS_GPIO2
16
5V0
17
EXP3_RXD_GPIO1
18
3V3
19
EXP3_TXD_GPIO0
20
1V8
21
EXP3_CS_N_GPIO7
23
EXP3_SCLK_GPIO6 SPI SCLK / GPIO pin 6 (Modem DSR)
24
GPS_PWR_EN
25
EXP3_MISO_GPIO5 SPI MISO / GPIO pin 5 (Modem DCD)
26
GPS_RX
27
EXP3_MOSI_GPIO4 SPI MOSI / GPIO pin 4 (Modem RI)
28
GPS_TX
29
EXP3_1Wire
30
GPS_BOOT
Signal
Power. 100 mA current
limited, switched
Power. Raw unregulated battery voltage
2000 mA maximum, unswitched
Power – raw unregulated battery voltage
1000 mA current limited, switched
Ground
USB Host D+
USB Host D–
Serial RTS / GPIO pin 3
Backup active signal, used to shed all
loads when running from backup power
Serial CTS / GPIO pin 2
5 V power supply, 100 mA maximum
Serial RXD / GPIO pin 1
3.3 V power supply, 100 mA maximum
Serial TXD / GPIO pin 0
1.8 V power supply, 100 mA maximum
SPI chip select / GPIO pin 7
(Modem DTR)
GPS power enable
GPS serial port receive (input to GPS)
GPS serial port transmit
(input from GPS)
Connection for 1-Wire EEPROM
GPS boot mode control
Chapter 6: Omnii Expansion Ports and Connectors
100-Pin Multi-Function Connector
Function
Psion Teklogix Omnii HDK User Manual
I/O Type Voltage
(V)
Power
3.3
Power
3.0–
4.2
Power
3.0–
4.2
Ground
I/O
I/O
I/O
3.3
Output
3.3
I/O
3.3
Power
5.0
I/O
3.3
Power
3.3
I/O
3.3
Power
1.8
I/O
3.3
I/O
3.3
Output
1.8
I/O
3.3
Output
1.8
I/O
3.3
Input
1.8
I/O
3.3
Output
1.8
103
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