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