User guide

WM_PRJ_M12_UGD_001 - 002
18th September 2003
confidential ©
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This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged
without prior written agreement.
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1.2.1.3 Sub HD 15-pin connector
1 2 3 4 5
6 7 8 9 10
15
14 13 11 12
Figure 3: Sub HD 15-pin connector
Pin # Signal
(CCITT / EIA)
I/O I/O type Description Comment
1
CT109 / DCD
O STANDARD
RS232
RS232
Data Carrier Detect
2 CT103 / TX I STANDARD
RS232
RS232
Transmit serial data
3 BOOT I CMOS Boot Active low. Pull
down through
1K for Flash
downloading
4 Microphone (+) I Analog Microphone
positive line
5 Microphone (-) I Analog Microphone
negative line
6 CT104 / RX O STANDARD
RS232
RS232
Receive serial data
7 CT107 / DSR O STANDARD
RS232
RS232
Data Set Ready
8 CT108-2 / DTR I STANDARD
RS232
RS232
Data Terminal Ready
9 GND - GND Ground
10 Speaker (+) O Analog Speaker
positive line