Ic Pin Function Description - Sony HCD-D290 Service Manual

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6-18. IC PIN FUNCTION DESCRIPTION

MAIN BOARD IC301 µPD780018Y (MAIN CONTROL)
Pin No. Pin Name I/O
1 TA-MUTE O
2 DBFB-H/L O
3 427-LT O
4 KCON-LT O
5 KCON-ON/OFF O
6 F-RELAY O
7 R-RELAY O
8 PL-RELAY O
9 TEST I
10 X2 O
11 X1 I
12 VDD –
13 XT2 O
14 XT1 I
15 RESET I
16 INT/IN I
17 INT/IN/OUT I
18 SCOR O
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19 SOFT-TEST O
20 AC-CUT I
21 RDS-INT I
22 RDS-DATA I
23 VDD –
24 AVDD I
25 ADJ I
26 A-SHUT I
27 B-SHUT I
28 B-HALF I
29 CLK-CHECK I
30 SPEC-IN I
31 ADJ 2 I
32 DEMO-CHANGE I
33 AVss –
34 SQ-DATA-IN I
35 — –
36 SQ-CLK O
37 SW-ON/OFF O
38, 39 FUNC 1, 2 I
40 Vss –
41 VOL-LAT O
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42 PL-LAT O
43 COM-DIN I
.
44 COM-DOUT O
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Line mute signal output
DBFB H/L select signal output
Latch signal output for IC201 (62427)
Not used
Front speaker relay control output
Not used
Connected ground
X'tal (5MHz)
Power supply (+5V)
X'tal (32.768 KHz)
Reset signal input
Connected ground
Subcode data request signal output
Software test port
Back up signal input
Not used
Power supply (+5V)
Analog reference voltage input
CD adjust point port
A Deck reel pulse detector
B Deck reel pulse detector
Half detector signal input
Connected ground
Version select signal input
Connected ground
DEMO H/L select signal input
Ground
Subcode Q data input
Not used
Sub code Q data clock input
Not used
Connected ground
Ground
Not used
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Connected ground
i
Common serial data output
– 88 –
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2 9
8
Function
Q Q
3 6 7 1 3 1 5
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.
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9