Ic Pin Functions Description - Sony RCD-W50C Service Manual

RCD-W50C
6-21. IC Pin Function Description
• IC1 µPD70F3033AYGF-3BA CD & SYSTEM CONTROL (MAIN Board)
Pin No. Pin Name
1 FL-LD-DT
2 FL-LD-CLK
3 DA-DATA-IN
4 DA-DATA-OUT
5 DA-CLK
6 CD-R IN
7 CD-R OUT
8 DA-LATCH
9 EVDD
10 EVSS
11 AC CUT
12 PWM1
13 SIRCS
14 LDON
15 SUBQ
16 NC
17 SQCLK
18 SENSE
19 PWM2
20 PWM3
21 VPP
22 NC
23 X4
24 CTRL1
25 DA-RESET
26 NC
27 XLT
28 XRDY
29 A_MUTE
30 NC
31 SCMS
32 BDRST
33 XREQ
34 RESET
35 XT1
36 XT2
37 REGC
38 X2
39 X1
40 VSS
41 VDD
42 CLKOUT
ENCODER1 to
43 to 45
ENCODER3
46 D-OUT ON/OFF
47 INIT_SW
48 COUNT_SW
49 DOOR_SW
50 MIDOUT_SW
51 MIDIN_SW
80
I/O
O Data output to the FL and LED drivers
O Clock output to the FL and LED drivers
I Data input from the AD/DA converter (IC500)
O Data output to the AD/DA converter (IC500)
O Clock output to the AD/DA converter (IC500)
Data input from the µCOM (IC501)
I
Data output to the µCOM (IC501)
O
O Data latch signal output to the AD/DA converter (IC500)
— Power supply (+5V)
— Ground terminal
I AC CUT signal input "L" : AC CUT
O PWM signal output to FE
I SIRCS signal input from the remote control receiver
O Laser ON signal output
I Sub-code Q serial data input
— Not used (open)
O Sub-code Q output serial clock output
I SENSE signal input from the IC101
O PWM signal output toTE
O PWM signal output to RFDC
— Flash programming power supply
— Not used (open)
O Disc rotation speed selection signal output
O Disc rotation speed selection signal output
O Reset signal output to the AD/DA converter (IC500)
— Not used (open)
O Serial data latch signal output to the IC101
Data ready signal input from the µCOM (IC501)
I
O Muting control signal output "L" : ON
— Not used (open)
O Analog line selection signal output "H" : SCMS ON at SYNC mode
O BD reset signal output "L" : reset
Data request signal output to the µCOM (IC501)
O
I Reset signal input
I Sub-clock input
O Sub-clock output
— Electrolytic capacitor terminal for the regulator
O Ceramic resonator terminal
I Ceramic resonator terminal
— Ground terminal
— Power supply (+5V)
O Clock output (open)
I Disc tray address detection signal input from the rotary encoder
O Not used (open)
I INIT detection switch signal input
I COUNT detection switch signal input
I DOOR detection switch signal input
I MIDOUT detection switch signal input
I MIDIN detection switch signal input
Description