Keyboard; General; Connectors - Benefon SIGMA GOLD TDP-52-SN3 Service Manual

5.2 KEYBOARD

OH0700 Keyboard

5.2.1 General

Keyboard unit includes: key matrix, battery current measuring components, radio
base connector, battery connectors and microphone.

5.2.2 Connectors:

5.2.2.1 Processor / audio module, V101 40 pin connector
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
4H0700GB.__2
VB power supply from battery
VB
VB
VB
VB
EXTMIC external audio from the microphone
external audio to the speaker ampili-
EXTERP
fier
CADET carbox identification
I2CINT i2c interrupt, radio input
SGL i2c clock
SDA i2c data
TXD rs232 out
RXD rs232 in
EXTIO reserve
CHGCONT charging control voltage
GND ground
GND
GND
GND
GND
XKEYINP0 key matrix input
XKEYINP1
XKEYINP2
XKEYINP3
XKEYINP3
XKEYOUT0 key matrix output
XKEYOUT1
XKEYOUT2
XKEYOUT3
CHGIND charging voltage indicator
Product: TDP-52-SN3 (Sigma Gold)
27.1.1999
/ OH0700
6V
400 mVrms
220 mVrms
0/5V
0/5V
0/5V
0/5V
0/5V
0/5V
0/5V
0...4.2V
0/5V
0/5V
0/5V
29