Ic Pin Function Description; Ao Y U163 . Co M - Sony HCD-VX5A Service Manual

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7-31. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC501 M30622MA-A09FP (SYSTEM CONTROLLER)
Pin No. Pin Name
1 STK-MUTE
2 POWER
3 F-RELAY
4 R-RELAY
5 CD-POWER
6 LINE-MUTE
7 DBFB-H/L
8
BYTE
9 CNVSS
10 XC-IN
11 XC-OUT
12 RESET
13 X-OUT
14 VSS
15 X-IN
16 VCC
17
NMI
TE
L 13942296513
18 WAKE UP
19 SCOR
20 RDS-INT
21 RDS-DATA
22 AC-CUT
23 PL-CLK
24 PL-DATA
25 PL-LAT
26 TIMER LED
27 PROTECTOR
28
NCO
29 IIC-CLK
30 IIC-DATA
31 NCO
32
SQ-DATA
33
SQ-CLK
34 SW MODE
35
CD-DATA
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36 RY-SW
37 CD-CLK
38 493-LATCH .
39 STBY LED
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I/O
O Power amplifier on/off selection signal output terminal "L": standby mode, "H": on
Power on/off control signal output for the audio system (+5V) and deck, panel, audio system
O
(+7V) "L": standby mode, "H": power on
O
Relay drive signal output for the speaker protect "H": relay on
O
Relay drive signal output for the speaker protect "H": relay on Not used (open)
Power on/off control signal output for the CD/video CD section
O
"L": standby mode, "H": power on
O
Line muting on/off control signal output terminal "L": muting on
DBFB normal/high selection signal output to the M62493FP (IC101)
O
"L": DBFB high, "H": DBFB low
I
External data bus line byte selection signal input terminal Fixed at "L" in this set
— Ground terminal
I
Sub system clock input terminal (32.768 kHz)
O
Sub system clock output terminal (32.768 kHz)
System reset signal input from the reset signal generator (IC502) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
O
Main system clock output terminal (16 MHz)
—
Ground terminal
I Main system clock input terminal (16 MHz)
—
Power supply terminal (+5V)
I
Non-maskable interrupt input terminal Fixed at "H" in this set
I
Wakeup control signal input from the fluorescent indicator tube driver (IC601) "H" active
I Subcode sync (S0+S1) detection signal input terminal Not used (fixed at "L")
I
Serial data transfer clock signal input terminal Not used (fixed at "L")
I
Serial data input terminal Not used (fixed at "L")
I
AC off detection signal input from the reset signal generator (IC502) "L": AC cut checked
O Serial data transfer clock signal output to the pro-logic circuit Not used (open)
O
Serial data output to the pro-logic circuit Not used (open)
O
Serial data latch pulse output to the pro-logic circuit Not used (open)
O
LED drive signal output of the TIMER SELECT indicator (D632) "H": LED on
Protect on/off detection signal input from the speaker protect circuit
I
"L": protect on, "H": protect off
O
Not used (open)
Communication data reading clock signal input or transfer clock signal output with the CD
I/O
mechanism controller (IC502) and fluorescent indicator tube driver (IC601)
Communication data bus with the CD mechanism controller (IC502) and fluorescent indicator
I/O
tube driver (IC601)
O Not used (open)
I
Subcode Q data input terminal Not used (fixed at "L")
O
Subcode Q data reading clock signal output terminal Not used (open)
O
Not used (open)
O
Serial data output terminal Not used (open)
Connection detect signal input of the headphone jack (J701)
I
"L": no connected, "H": headphone connected
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O Serial data transfer clock signal output terminal Not used (open)
O i
Serial data latch pulse output to the M62493FP (IC101)
O
LED drive signal output of the I/u indicator (D754) "H": LED on (standby mode)
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Description
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