Operation - Benefon SIGMA GOLD TDP-52-SN3 Service Manual

9.2.2.3 Connector PC Signals
1 and 2
3
5
6 and 7
8
10
11
12
13
14
16

9.2.3 Operation

Audio routes for either an external handset or a line converter are selected
using audio switches I201 (mic) and I202 (erp). The operation is controlled by
the HOOK data coming from the XHSERP line. OFF HOOK audio signals have
been routed to connector HS, and ON HOOK audio signals to connector PC.
Voltage regulation is done by components R205, C207 and D201.
Xo0236e4_fm5.fm
V-CHARGE
9V
PCMIC
GND
PCERP
I2CINT
SCL
SDA
TXD
RXD
CHCGONT
Product: DB-40 (Branching Unit) /
27.1.1999
Battery charging voltage 2 A in
Operation voltage for accessories 0.5 A out
Ext audio from microphone1 kHz / 400
mVrms
Ground
Ext audio for loudspeaker amplifier 1 kHz /
200 mVrms
I2c interruption, input to radio 0/5 V
I2c clock 0/5 V
I2c data 0/5 V
Rs232 0/5 V out
Rs232 0/5 V in
Voltage for controlling charger current 0...5
VDC analog
YO0236
18