Ic Pin Function Description - Sony HCD-VX555 Service Manual

6-28. IC PIN FUNCTION DESCRIPTION

• IC501 M30620MCA-A95FP (MASTER CONTROL) (MAIN BOARD)
Pin No. Pin Name
1 AUDIO-OUT
2 STEREO
3 TUNED
4 SIRCS
5 SUR1
6 SUR2
7 SUR3
8 N.C.
9 N.C.
10 XC-IN
11 XC-OUT
12 RESET
13 X-OUT
14 VSS
15 X-IN
16 VCC
17 NMI
18 RDS-INT
19 SCOR
20 RDS-DATA
21 ST-MUTING
22 ST-CE
23 ST-DOUT
24 BU-PWM3
25 ST-DIN
26 BU-PWM2
27 ST-CLK
28 BU-PWM1
29 IIC CLK
30 IIC DATA
31 N.C.
32 SQ-DATA
33 SQ-CLK
34 SENS
35 CD-DATA
36 N.C.
37 CD-CLK
38 CD-POWER
39 CLOCK-OUT
40 HOLD
41 M-RESET
42 XLT
43 XRST
44 LOAD-IN
45 LOAD-OUT
46 OPEN-SW
47 CLOSE-SW
48 BU UP/DOWN-SW
49 T-SENS
50 N.C.
I/O
O Audio out ON/OFF signal (H=ON,L=OFF)
I STEREO detect signal input (L=ON,H=OFF)
I TUNED detect signal input (L=ON,H=OFF)
I Remote control receiver data signal input
O Not used
O Not used
O Not used
— Connected to ground
— Connected to ground
I Sub clock input
O Sub clock output
I System reset input
O Main system clock output
— Ground
I Main system clock input
— Power supply (+5V)
I Not used (connected to Vcc)
I RDS interrupt signal input
I CD Q-data signal input
I RDS data signal input
O Tuner muting signal output
O Tuner chip enable output
O Tuner data signal output
O BU PWM signal output
I Tuner data signal input
O BU PWM signal output
O Tuner clock signal output
O BU PWM signal output
O IIC CLS output
O IIC SDA output
— Not used
I CD SQ data input
O CD SQ clock output
I BD condition signal input
O CD data signal output
— Not used (connected to ground)
O CD clock signal output
O CD power control signal output (H=ON,L=OFF)
O Test point (clock check)
O MODE signal output
O Display control IC reset signal output
O CD LAT signal output
O CD reset sgnal output
O Loading motor control signal output
O Loading motor control signal output
I Tray open detect signal input
I Tray close detect signal input
I Pick-up up/down detect signal input
I CD table detect signal input
— Not used (connected to ground)
HCD-VX555/VX555J
Description
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