Ic Pin Function Description - Sony HCD-RG66T Service Manual

7-27. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC501 M30620MCN-A00FP (SYSTEM CONTROLLER (CD MECHANISM CONTROL))
Pin No. Pin Name
1 NO-USE
2 STEREO
3 TUNED
4 SIRCS
5 to 7 SUR1 to SUR3
8, 9 GND
10 XC-IN
11 XC-OUT
12 RESET
13 X-OUT
14 VSS
15 X-IN
16 VCC
17 NMI
18 NO-USE
19 SCOR
20 AC-CUT
21 ST-MUTE
22 ST-CE
23 ST-DOUT
24 PWM3
25 ST-DIN
26 PWM2
27 ST-CLK
28 PWM1
29 IIC-CLK
30 IIC-DATA
31 TXD1
32
SQ-DATA
33 SQ-CLK
34
SENS
35
CD-DATA
36 XLT
37 CD-CLK
38 CD-POWER
39 CLOCK-OUT
40 LD ON
41 GC RESET
42 NO-USE
43 XRST
44 LOAD-IN
45 LOAD-OUT
46 OPEN-SW
47 CLOSE-SW
I/O
—
Not used
I FM stereo detection signal input from the tuner unit "L": stereo
I
Tuning detection signal input from the tuner unit "L": tuned
I
Remote control signal input
O
Surround signal processor control signal output terminal Not used
—
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 "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 (+3.3V)
I Non-maskable interrupt input terminal
—
Not used
I Subcode sync (S0+S1) detection signal input from the digital signal processor
I
AC off detection signal input from the reset signal generator "L": AC cut checked
O
Tuner muting on/off control signal output "H": muting on
O
PLL chip enable signal output to the tuner unit
O
PLL serial data output to the tuner unit
O RFDC PWM signal output to the RF amplifier (for CD-RW)
I
PLL serial data input from the tuner unit
O PWM signal output to the RF amplifier (for CD-RW)
O
PLL serial data transfer clock signal output to the tuner unit
O
Focus servo drive PWM signal output to the RF amplifier (for CD-RW)
Communication data reading clock signal input or transfer clock signal output with the fluorescent
I/O
indicator tube driver
I/O
Communication data bus with the fluorescent indicator tube driver
— Not used
I
Subcode Q data input from the digital signal processor
O Subcode Q data reading clock signal output to the digital signal processor
I Internal status detection monitor input from the digital signal processor
O
Serial data output to the digital signal processor
O Serial data latch pulse output to the digital signal processor
O
Serial data transfer clock signal output to the digital signal processor
O
Power on/off control signal output for the CD section "H": power on
O
Clock (32.768 kHz) signal output terminal (for test mode)
O Laser diode on/off control signal output to the RF amplifier "L": laser diode on
I
Reset signal output to the fluorescent indicator tube driver "L": reset
—
Not used
O Reset signal output to the digital signal processor and motor/coil driver "L": reset
O
Turn motor drive signal output
O
Turn motor drive signal output
I
Disc tray open detection signal input terminal "L": disc tray open
I Disc tray close detection signal input terminal "L": disc tray close
Description
HCD-RG66T
49