Siemens C75 Service Repair Documentation page 33

Company Confidential
Copyright 2005© Siemens AG
9.7 IO Connector with ESD protection
IO Connector – New Slim Lumberg
Pin Name
1 POWER
2 GND
3 TX
4 RX
5 CTS
6 RTS
7 DCD
8 STEREO1_OUT Analog O
9
10 STEREO2_OUT Analog O
11 GND_MIC
12 MICEA_AC
Service Repair Documentation
Level 2.5e – C75
IN/OUT Notes
I/O POWER is needed for charging batteries and for supplying
the accessories. If accessories are supplied by mobile, talk-
time and standby-time from telephone are reduced.
Therefore it has to be respected on an as low as possible
power consumption in the accessories.
O Serial interface
I Serial interface
I/O Data-line for accessory-bus
Use as CTS in data operation.
I/O Use as RTS in data-operation.
I/O Clock-line for accessory-bus.
Use as DTC in data-operation.
driving ext. left speaker to PHANTOM_BUF_OUT with mono-
headset STEREO1_OUT and STEREO2_OUT differential
mode
driving ext. right to PHANTOM_BUF_OUT with mono-
headset STEREO1_OUT and STEREO2_OUT differential
mode
Analog I for ext. microphone
Analog I External microphone
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