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Ic Pin Function Description - Sony HCD-xb5 Service Manual

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6-21. IC PIN FUNCTION DESCRIPTION

MAIN BOARD IC301 µPD780018YGF-016-3BA (MAIN CONTROL)
Pin No.
Pin Name
1
TA-MUTE
2
DBFB-H/L
3
427-LAT
4
K-CON-LAT
5
K-CON-ON
6
F-RELAY
7
R-RELAY
8
PL-RELAY
9
TEST
10
X2
11
X1
12
VDD
13
XT2
14
XT1
15
RESET
16
(INT/IN)
17
(INT/IN/OUT)
18
SCOR
19
SOFT-TEST
20
AC-CUT
TE
L 13942296513
21
RDS-INT
22
RDS-DATA
23
VDD
24
AVDD
25
ADJ
26
A-SHUT
27
B-SHUT
28
B-HALF
29
CLK-CHECK
30
SPEC-IN
31
ADJ2
32
DEMO-MODE
33
AVSS
34
SQ-DATA-IN
35
36
SQ-CLK
37
SW-ON/OFF
38, 39
FUNC 1, 2
40
VSS
41
VOL-LAT
42
PL-LAT
www
43
COM-DIN
44
COM-DOUT
.
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I/O
O
Line mute signal output
O
DBFB H/L select signal output
O
Latch signal output for IC201 (62427)
O
Not used
O
O
Front speaker relay control output
O
Not used
O
I
Connected ground
O
X'tal (5MHz)
I
Power supply (+5V)
O
X'tal (32.768 kHz)
I
I
Reset signal input
I
Connected ground
I
O
Subcode data request signal output
O
Software test port
I
Back up signal input
I
Not used
I
Power supply (+5V)
I
Analog reference voltage input
I
CD adjust point port
I
A Deck reel pulse detector
I
B Deck reel pulse detector
I
Half detector signal input
I
Connected ground
I
Version select signal input
I
Connected ground
I
Connected ground
Ground
I
Subcode Q data input
Not used
I
Sub code Q data clock input
O
Not used
I
Connected ground
Ground
O
Not used
O
I
Connected ground
x
ao
u163
y
O
Common serial data output
i
http://www.xiaoyu163.com
2 9
8
Function
Q Q
3
6 7
1 3
1 5
co
.
– 93 –
9 4
2 8
0 5
8
2 9
9 4
2 8
m
9 9
9 9

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