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KCH-16
55
Control unit (X53-4360-20)
Pin No.
Name
I/O
Function
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
Pin No.
Name
I/O
Function
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)
1
KVL
I
Detection of KVL3000
Active Low pulled up with 47k.
VIH: 4.16~5.10V / VOL: –0.3~0.96V
2
TRD
I/O
Bidirection serial data
VIH: 4.16~5.10V / VIL: –0.3~0.96V
VOH: 4.80~5.20V / VOL: <0.3V
Baud rate: 115200bps Max
3
MIC
O
MIC signal output
4
ME
-
MIC GND
5
PS
O
Power switch signal output
SW OFF: 13.0V (typ)
SW ON: 0V (typ)
6
E
-
GND
7
SB
I
Switched Battery
Voltage: 11.39~15.64V
Current: 200mA max
8
RESET
I
Reset signal input
Active Low pulled down with 470k.
VIH: 4.16~5.10V / VIL: –0.3~0.96V
TERMINAL FUNCTION