M62363Fp Block Diagram - Kenwood TK-80 Service Manual

D/A Converter: M62363FP (TX-RX unit IC13)
Pin No. Pin Name Port Name
1,2 NC VI1,VO1
3 POC VO2
4 (5V) VI2
9 RAF VI3
10 AFC VO3
11 MICOUT VO4
12 MICIN VI4
13 (5V) VI5
14 CAR VO5
15 TGC VO6
16 (5V) VI6
21 (5V) VI7

■ M62363FP Block diagram

V 8 V 8
IN OUT
24 23
8 bit
R-2R segment
D-A converter
8 bit
Latch
8 bit
Latch
8 bit
R-2R segment
D-A converter
1 2
V 1 V 1
IN OUT
Balanced Modulation: NJM2594V (TX-RX unit IC4)
Carrier
NC input
8 7
1 2
V+ Output
1
SEMICONDUCTOR DATA
Not used
Power control
Created from 14V at zener and resistive division
AF reference voltage
AF voltage (VCA control voltage)
Microphone output (audio), microphone gain
Microphone input (audio)
Vdd common
CAR level
TX gain control
Vdd common
Vdd common
V 7 V 7 GND RESET
OUT IN
22 21 20 19
8 bit
R-2R segment
D-A converter
8 bit
Latch
8
8
8 bit
Latch
8 bit D0
R-2R segment
D-A converter
3 4 5 6
V 2 V 2 V LD
OUT IN DD
Signal
Bypass input
6 5
3 4
Output GND
2
Description
V ref D V 6
DA O IN
18 17 16
8 bit
R-2R segment
D-A converter
8 bit
Latch
Adress 8 bit
decoder Latch
~ D7 D8~D11 8 bit
R-2R segment
12 bit shift register
D-A converter
7 8 9
CLK DI V 3
IN
TK-80
V 6 V 5 V 5
OUT OUT IN
15 14 13
8 bit
R-2R segment
D-A converter
8 bit
Latch
8 bit
Latch
8 bit
R-2R segment
D-A converter
10 11 12
V 3 V 4 V 4
OUT OUT IN
25