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B.1
OVERVIEW
The tables in this appendix contain pin-to-pin comparisons for different c18 interface connectors, and their g18 and g20
equivalents. All tables are color-coded to denote the level of compatibility for each of the pins. The legend below applies to all
tables in this appendix.
Legend:
No difference:
Some difference:
Difference:
B.2
c18/g18 28-PIN CONNECTOR COMPARISON
c18
g18
Pin #
Pin #
1
2
VCC
2
1
VCC
3
4
UIM_RESET
4
3
UART2_RXD_UIM_DATA
5
6
UIM_CR_DET
6
5
UIM_PWR_PH (3V ONLY)
7
8
IGNITION
8
7
UART1_DTR
9
10
WAKE_UP
10
9
UART2_TXD
98-08901C63-A
Table 20. c18/g18 28-pin Connector Comparison
c18 Signal Name*
H.
PINOUT COMPARISONS
g18 Signal Name
VCC (3.0-6.0 V)
VCC (3.0-6.0 V)
SIM CR RESET
SIM CR I/O DATA
SIM CR DET
SIM CR VCC (3/5V)
Turn on/Standby (TS)
RS232 – DTR
Wake-up/GPRS coverage
indicator
Man test
c18 Signal Description
4.0V DC nominal (3.6-4.5 V).
4.0V DC nominal (3.6-4.5 V).
UIM_RESET.
UART2 RXD (from OEM to PC)
or UIM DATA.
UIM sense detection.
UIM_PWR/Power Hold (Power
Status).
TS (Turn on/Standby) or
IGNITION.
5V tolerant.
From PC to OEM.
55
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