Terminal Function; Control Unit (X53-4360-20) - Kenwood KCH-16 Service Manual

Control unit (X53-4360-20)

Pin No. Name I/O
CN1 (to LCD ASSY)
1 /CS O Chip select output
2 /RES O LCD reset output
3 A0 O Address bus 0 output
4 /WR O WR bus output
5 D0 I/O Data bus 0
6 D1 I/O Data bus 1
7 D2 I/O Data bus 2
8 D3 I/O Data bus 3
9 D4 I/O Data bus 4
10 D5 I/O Data bus 5
11 D6 I/O Data bus 6
12 D7 I/O Data bus 7
13 VDD O 3.3V LCD power supply output
14 VSS - GND
15 VDD O 3.3V LCD power supply output
16 V1 - LCD drive power supply
17 V2 - LCD drive power supply
18 V3 - LCD drive power supply
19 V4 - LCD drive power supply
20 V5 O LCD drive power supply
CN2 (for production)
1~10
CN3 (to Control unit B/4 PTT switch)
1 PTT I PTT input
2 GND - GND

TERMINAL FUNCTION

Function Pin No. Name I/O
CN4 (to Control unit C/4 VOL control)
1 VOL GND - GND for volume level
2 VOL O Volume level output for audio control
3 VDD I 5V for volume level
CN5 (to Control unit D/4 Sub MIC)
1 ECM I Sub MIC input
2 ME - MIC GND
J2 (MIC jack)
Detection of KVL3000
1 KVL I Active Low pulled up with 47k.
VIH: 4.16~5.10V / VOL: –0.3~0.96V
Bidirection serial data
VIH: 4.16~5.10V / VIL: –0.3~0.96V
2 TRD I/O
VOH: 4.80~5.20V / VOL: <0.3V
Baud rate: 115200bps Max
3 MIC O MIC signal output
4 ME - MIC GND
Power switch signal output
5 PS O SW OFF: 13.0V (typ)
SW ON: 0V (typ)
6 E - GND
Switched Battery
7 SB I Voltage: 11.39~15.64V
Current: 200mA max
Reset signal input
8 RESET I Active Low pulled down with 470k.
VIH: 4.16~5.10V / VIL: –0.3~0.96V
KCH-16
Function
55