Io Connector With Esd Protection; Io Connector - New Slim Lumberg - Siemens S55 Repair Documentation

7.5 IO Connector with ESD protection

7.5.1 IO Connector – New Slim Lumberg
Name IN/OUT Notes
Pin
1 POWER I/O
2 GND
3 TX O
4 RX I
5 DATA/CTS I/O
6 RTS I/O
7 CLK/DCD I/O
8 AUDIO_L Analog
O
9
10 AUDIO_R Analog
O
11 GND_MIC Analog
I
12 MICP2 Analog
I
V1.00
S55/S57
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.
Serial interface
serial interface
Data-line for accessory-bus
Use as CTS in data operation.
Use as RTS in data-operation.
Clock-line for accessory-bus.
Use as DTC in data-operation.
driving ext. left speaker
With mono-headset Audio_L and Audio_R differential
mode
driving ext. right speaker With mono-headset Audio_L and
Audio_R differential Signal
for ext. microphone
External microphone
Page 40 of 49
Company Confidential © Copyright Siemens AG
ICM MP CCQ GRM
12/02