Microcomputer's Terminal Description - Kenwood KDC-8021 Service Manual

MICROCOMPUTER'S TERMINAL DESCRIPTION

PANEL MICROCOMPUTER UPD703032GFA03 (X16)
Pin Name
1 SC DATA
2 MC CLK
3 NC
4 DATA1
5 CLK
6 NC
7 DATA 2
8 CLK IN
9 EVDD
10 EVSS
11 RED LED
12 GREEN LED
13 REMO
14 LATCH
15 GCP
16 REMO ON
17-19 NC
20 BLK
21 TEST
22-33 NC
34 RESET
35 XT1
36 XT2
37 REGC
38 X2
39 X1
40 VSS
41 VDD
42-47 NC
48 FL +3.3V
49 FL +B
50-57 NC
58 BVDD
59 BVSS
60-73 NC
74 AVDD
75 AVSS
76 AVREF
77 F01
78 F02
79 F03
80 F04
81 F05
82 F06
83 WAVE IN
84 KR3
85 KR2
86 KR1
87 VOLUME B
88 VOLUME A
89 SC REQ
90 NC(FAC IN)
91 SC CON
92 OPEN KEY
I/O
I/O Data communication with System Controller.
I Clock input from System Controller.
O
O Data communication with FL driver.
O Clock communication with FL driver (rise data shifting).
O
O Data communication with FL driver
I Data communication with FL driver (fall data shifting)
- PAN.5V
- GND
O ILL Red switching. "H": ON. "L": OFF.
O ILL Green switching. "H": ON. "L": OFF.
I Input from Remote Control IC.
O Latch for FL driver. "H": Through. "L": Latch.
O Brightness gradation control.
I/O Remote Control IC power ON/OFF. "Hi-Z": OFF. "L"": ON.
O
O Display for FL driver. Blanking display. "H": Display ON. "L": Display OFF.
I INTEMALLY CONNECTED
O
I RESET
- GND
-
- Regulator capacitance connection.
- MAIN CLOCK
- MAIN CLOCK
- GND
- PAN.5V
O
O FL +3.3V ON/OFF "H":ON "L":OFF
I/O FL+B ON/OFF "H":FL+B ON "Hi-Z":FL+B OFF
O
- PAN.5V
- GND
O
- PAN.5V
- GND
-
I BPF(63Hz)
I BPF(150Hz)
I BPF(330Hz)
I BPF(1kHz)
I BPF(3.3kHz)
I BPF(10kHz)
I Voice input.
I KEY RETURN
I KEY RETURN
I KEY RETURN
I VOLUME CONTROL
I VOLUME CONTROL
O Request communication with System Controller. "H": Requested. "L": Standby.
O (FAC data input) (Flicker prevention circuit input)
I Panel uCOM control. During operation: "L".
I OPEN KEY "H":ON "L":OFF
KDC-8021/M9021/X859
Processing Operation
5