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Kenwood KDC-CX85 Service Manual page 6

Cd auto changer
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KDC-CX85/CPS85
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin
Pin Name
41
P21/TxD1/SO1
42
P22/ASCK1/SCK1
43
P23/PCL
44
P24/BUZ
45
P25/SI0/SDA0
46
P26/SO0
47
P27/SCK0/SCL0
48
P80/A0
49
P81/A1
50
P82/A2
51
P83/A3
52
P84/A4
53
P85/A5
54
P86/A6
55
P87/A7
56
P40/AD0
57
P41/AD1
58
P42/AD2
59
P43/AD3
60
P44/AD4
61
P45/AD5
62
P46/AD6
63
P47/AD7
64
P50/A8
65
P51/A9
66
P52/A10
67
P53/A11
68
P54/A12
69
P55/A13
70
P56/A14
71
P57/A15
72
VSS
73
P60/A16
74
P61/A17
75
P62/A18
76
P63/A19
77
P64/RD
78
P65/WR
79
P66/WAIT
80
P67/ASTB
6
I/O
Function
O
DATAC
Data output from the changer
I/O
HCLK
Communication clock input from H/U
O
REQC
Communication request to H/U
O
CHMUTE
Audio mute output to H/U
I
TXTDATA
Text data input
O
Not used.
O
TXTCLK
Text clock output
O
A0
Address setting terminal for S-RAM
O
A1
Address setting terminal for S-RAM
O
A2
Address setting terminal for S-RAM
O
A3
Address setting terminal for S-RAM
O
A4
Address setting terminal for S-RAM
O
A5
Address setting terminal for S-RAM
O
A6
Address setting terminal for S-RAM
O
A7
Address setting terminal for S-RAM
I/O
D0
Data input/output terminal with S-RAM
I/O
D1
Data input/output terminal with S-RAM
I/O
D2
Data input/output terminal with S-RAM
I/O
D3
Data input/output terminal with S-RAM
I/O
D4
Data input/output terminal with S-RAM
I/O
D5
Data input/output terminal with S-RAM
I/O
D6
Data input/output terminal with S-RAM
I/O
D7
Data input/output terminal with S-RAM
O
A8
Address setting terminal for S-RAM
O
A9
Address setting terminal for S-RAM
O
A10
Address setting terminal for S-RAM
O
A11
Address setting terminal for S-RAM
O
A12
Address setting terminal for S-RAM
O
A13
Address setting terminal for S-RAM
O
A14
Address setting terminal for S-RAM
O
A15
Address setting terminal for S-RAM
-
VSS
Ground potential connection terminal
O
A16
Enable control terminal for S-RAM
O
A17
Enable control terminal for S-RAM
O
RAMOK
RAM check judging terminal for production
Mechanism deck ascent/descent position
I
ELVADJ
adjustment mode
O
RD
Read-out to S-RAM control output
O
WR
Write to S-RAM control output
I
WAIT
Insertion of weight when accessing S-RAM
O
ASTB
Chip selection to S-RAM
Description
Processing Operation
L: Mute ON
L: Adjustment mode

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