Kenwood Z 828 Service Manual

Page 6

KDC-Z828,Z828
MICRDCDMPUTER'S TERMINAL DESCRIPTION

0 Panel Microcomputer UPD70303360062 (ICSOO : Control uCOM)

PinNo. Pin name l/O Description Processing Operation
1 VFDiDATA1 0 Data output "1" to VFD driver
2 VFDiCLK O Clock output to VFD driver
3 NC | Resistor connected to GND
4 VFDiDATA2 O Data output "2" to VFD driver
5 VFD,CLK,IN | Clock input from VFD,CLK (For use in synchronization of DATA 1 and 2)
6 EVdd Connected to PNL 5 V
7 EVss Connected to GND
8 NC O Output open.
9 5V,ON O Power supply control output to Remote Control IC and SAJC. 5V ONzHl, 5V OFF:LO
10 REMO | Remote control signal input
11 NC O Output open.
12 VFDiLATCH O Latch output to VFD driver
13 VFDiGCP O Luminance gradation control output to VFD driver
14 A13 0 Address output "A13" to external ROM
15 A14 O Address output "A14" to external ROM
16 A15 O Address output "A15" to external ROM
17 VFDiBLK O Blank output to VFD driver Display ON: High. Display OFF: Low.
18 lC/Vpp Test
19 A5 O Address output "A5" to external ROM
20 A6 O Address output "A6" to external ROM
21 A7 O Address output "A7" to external ROM
22 A8 O Address output "A8" to external ROM
23 A9 O Address output "A9" to external ROM
24 A10 O Address output "A10" to external ROM
25 A11 0 Address output "A11" to external ROM
26 A12 O Address output "A12" to external ROM
27 A1 0 Address output "A1" to external ROM
28 A2 O Address output "A2" to external ROM
29 A3 O Address output "A3" to external ROM
30 A4 O Address output "A4" to external ROM
31 RESET | Reset input
32 XT1 Resistor connected to GND
33 XT2 OPEN
34 REGC 1 uF connected to GND
35 X2 Connected to Main X'tal
36 X1 Connected to Main X'tal
37 Vss Connected to GND
38 Vdd Connected to PNL 5 V
39 CLKOUT OPEN
40 NC 0 OUTPUT OPEN
6 41 NC O OUTPUT OPEN