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Pin #
Signal Name
34
GPS_ANT_PWR
35
GPIO5
36
GPIO9
All identical names for 70/36/28-pin connectors correspond to the same signal.
All UART names are references to PC, as the c18 is a DCE device.
Note
4.3
28-PIN DIN INTERFACE CONNECTOR
Table 18 shows the pin assignments for c18 models using a 28-pin DIN interface connector.
28-pin
Header
Signal Name
Pin #
1
VCC
2
VCC
3
UIM_RESET
4
UART2_RXD_UIM_DATA
5
UIM_CR_DET
6
UIM_PWR_PH
7
IGNITION
8
UART1_DTR
9
WAKE_UP
10
UART2_TXD
11
GND
12
GND
13
UART1_DCD
98-08901C63-A
Table 17. 36-pin ZIF Connector Pinout (Continued)
Signal Level [V]
3.0 or 5.0
2.8
2.8
Table 18. 28-pin DIN Connector Pinout
g18
Signal
Pin #
Level [V]
2
3.6 – 4.5
1
3.6 – 4.5
4
2.8
3
2.8
6
2.8
5
2.8
8
7
2.8
10
2.8
N/A*
2.8
12
11
14
2.8
I/O
I
External power for active GPS antenna.
I/O
General purpose I/O.
I/O
General purpose I/O.
I/O
–
4.0V DC nominal.
–
4.0V DC nominal.
O
UIM_RESET.
O or
UART2 RXD (from OEM to PC) or UIM
I/O
DATA. A software-defined pin.
I
UIM sense detection.
O
UIM_PWR.
12
I
TS (turn on/standby) or ignition.
I
5V tolerant.
I/O
I
From PC to OEM.
–
–
Power ground.
–
–
Power ground.
O
Connector Pin Assignments
Description
Description
45
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