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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
AUDIO_RE
Analog
F
O
10
AUDIO_R
Analog
O
11
GND_MIC
Analog
I
12
MICP2
Analog
I
V1.20
A55/C55_Hitachi
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
mid-voltage
in stereo mode reference to
AUDIO_L and AUDIO_R in mono mode not used
driving ext. right speaker With mono-headset Audio_L and
Audio_R differential Signal
for ext. microphone
External microphone
Page 42 of 48
Company Confidential © Copyright Siemens AG
ICM MP CCQ GRM
04/03
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