Ic Terminal Function List; Table Of Microcomputer - Denon DN-2000F Service Manual

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IC TERMINAL FUNCTION LIST
TABLE OF MTCROCOMPUTER
(rC800) TERMTNALS
1C800 is utilizing an external ROM in its initial lot until using the mask item. As the contents of same terminals ditfer according to the
lot for this reason, please be reminded at a time performing service. External ROM utilizing models are up to these serial numbers
listed below.
Model Serial No.
E U R O P E - 8 8 1 , 8 8 6 - 9 5 0
u.K.
- 300
u.s.A.
- 620
Model
CANADA
Multi-Vollage
Serial No.
- 1 3 0
- 1 0 0
Terminal
No.
Symbol
Name
vo
Terminal Function
1
CUEL2
o
CUE LED ON/OFF siqnal of CD-2. ON at'H".
2
PLYL2
o
PLAY LED ON/OFF signal of CO-2. ON at
"H".
PITL2
PITCH LED ON/OFF signal ol CD-2. ON at "H".
4 PITLl
o
PITCH LED ON/OFF signal of CD-1. ON at
"H".
5 PLYLl
o
PLAY LED ON/OFF sional ot CO-1. ON at
"H".
C U E L l
CUE LED ON/OFF signal of CD-l. ON at "H'.
RST- Hard reset input. Reset at
"L"
a Voo
+5V power supply.
9
x2
Clock oscilation circuit input 2.
0 X1 Clock oscilation circuit input 1
vss
0V power supply.
2 Vss
0V power supply.
3
Not connected.
4
LWCZ
Chio enable sional ot CD-2's LCD driver.
LCLK2
Command transmitting clock lor CD-2's LCD driver
o
LDAT2 Command data tor CD-2's LCD driver.
7 LCEl
o
Chip enable signal o{ CD-1's LCD driver.
d
LCLKl
U
Command transmitting clock {or CD-l's LCD driver.
o
LDATl
o
Command data tor CD-1's LCD driver.
o
Not used. Fixed to "L'.
21
Not Connected.
Not used. Fixed to'L".
z5
Not used. Fixed to
'L".
24
o
Not used. Fixed to "U.
25
WR-
Not used. Mask ilem... fixed to
"L', extemal ROM... fixed to "H".
zo (JE-
o
Enable signal output for external ROM. Mask item... fixed to
"L", external ROM... pulse output fot reading
27 KOUT3
Kev matrix scan siqnal 3.
28 KOUT2
o
Key matrix scan signal 2.
29 KOUTl
o
Key matrix scan signal 1
30
KOUTO Key matrix scan signal 0.
e l Not mnnected.
32 A 1 5 Memory address 15. Not used. Mask ilem... fixed to
"L''.
J J
414
o
Memory address 14. Mask item... fixed to'L".
34 4 1 3
Memory address 13. Mask item... fixed to
"U.
J J
Not connected.
J O
412
o
Memorv address 12. Mask item... fixed to
"L".
37
A l l
Memory address 11. Mask item... tixed to
"L".
38 4 1 0
Memorv address 10. Mask item... lixed to "f.
39
A9
o
Memory address 9. Mask item... lixed to
"L".
40 A8
o
Memory address 8. Mask item... lixed to
"L'.
4 1 Not connected.
22