Sony HCD-D690 Service Manual - Page 69

FUNCTION, DESCRIPTION, Pin No., Pin Name

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6-20. 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 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-MODE 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 42 PL-LAT O 43 COM-DIN I 44 COM-DOUT O 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 Connected ground Ground Subcode Q data input Not used Sub code Q data clock input Not used Connected ground Ground Not used Connected ground Common serial data output Function - 99 -

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– 99 –
1
TA-MUTE
O
Line mute signal output
2
DBFB-H/L
O
DBFB H/L select signal output
3
427-LT
O
Latch signal output for IC201 (62427)
4
KCON-LT
O
Not used
5
KCON-ON/OFF
O
6
F-RELAY
O
Front speaker relay control output
7
R-RELAY
O
Not used
8
PL-RELAY
O
9
TEST
I
Connected ground
10
X2
O
X’tal (5MHz)
11
X1
I
12
VDD
–
Power supply (+5V)
13
XT2
O
X’tal (32.768 KHz)
14
XT1
I
15
RESET
I
Reset signal input
16
INT/IN
I
Connected ground
17
INT/IN/OUT
I
18
SCOR
O
Subcode data request signal output
19
SOFT-TEST
O
Software test port
20
AC-CUT
I
Back up signal input
21
RDS-INT
I
Not used
22
RDS-DATA
I
23
VDD
–
Power supply (+5V)
24
AVDD
I
Analog reference voltage input
25
ADJ
I
CD adjust point port
26
A-SHUT
I
A Deck reel pulse detector
27
B-SHUT
I
B Deck reel pulse detector
28
B-HALF
I
Half detector signal input
29
CLK-CHECK
I
Connected ground
30
SPEC-IN
I
Version select signal input
31
ADJ 2
I
Connected ground
32
DEMO-MODE
I
Connected ground
33
AVss
–
Ground
34
SQ-DATA-IN
I
Subcode Q data input
35
—
–
Not used
36
SQ-CLK
O
Sub code Q data clock input
37
SW-ON/OFF
O
Not used
38, 39
FUNC 1, 2
I
Connected ground
40
Vss
–
Ground
41
VOL-LAT
O
Not used
42
PL-LAT
O
43
COM-DIN
I
Connected ground
44
COM-DOUT
O
Common serial data output
Pin No.
Pin Name
I/O
Function
6-20.
IC
PIN
FUNCTION
DESCRIPTION
MAIN
BOARD
IC301
μPD780018Y (MAIN CONTROL)