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B.3
c18/g18 36-PIN CONNECTOR COMPARISON
Pin #
c18 Signal Name*
1
USB_VBUS
2
USB_D+
3
USB_D-
4
UART1_TXD
5
UART1_RXD
6
UART1_DTR
7
UART1_DCD
8
UART1_RTS
9
UART1_CTS
10
UART1_DSR
11
UART1_RI
12
UART2_TXD
13
AUDIO_IN
14
AUDIO_OUT_ONOFF
15
WAKE_UP
16
UIM_CR_DET
17
UIM_PWR_PH (3V Only)
18
UIM_RESET
19
UART2_RXD_UIM_DATA
20
UART2_CTS_UIM_CLK
21
IGNITION
22
UART2_RTS
98-08901C63-A
Table 21. c18/g18 36-pin Connector Comparison
g18 Signal Name
TX ENABLE
RXD UART2
TXD UART2
RS232 – TXD
RS232 – RXD
RS232 – DTR
RS232 – DCD
RS232 – RTS
RS232 – CTS
RS232 – DSR
RS232 – RI
MAN TEST
Analog Audio In
Analog Audio Out and On/Off
Wake Up
SIM CR DET
SIM CR VCC (3/5 V)
SIM CR RESET
SIM CR I/O DATA
SIM RC CLOCK
TS (Turn on/Standby)
DSC ENABLE
Pinout Comparisons
c18 Signal Description
USB Power; 5.0V nominal.
USB D+ signal.
USB D- signal.
5V tolerant (from PC to OEM) input.
From OEM to PC.
5V tolerant input.
5V tolerant input.
5V tolerant (from PC to OEM).
Analog Audio_In (Input impedance
>10 KΩ).
Analog Audio_Out and on/off.
UIM card sense detection.
UIM_PWR/POWER HOLD (Power
Status).
UIM_RESET.
UART2 RXD (from OEM to PC) or
UIM_DATA_I/O.
UART2 CTS or UIM_CLK.
TS (Turn on/Standby) or IGNITION.
57
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