Read Sony MHC-RG90 Service Manual online
MHC-RG90�
7-28. DESCRIÇÃO DOS PINOS DOS IC's
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PLACA PRINCIPAL IC501 M30620MCN-A00FP (SYSTEM CONTROLLER (CD MECHANISM CONTROL))
Pin No.
Pin Name
I/O
Description
1
NO-USE
—
Not used
2
STEREO
I
FM stereo detection signal input from the tuner unit “L”: stereo
3
TUNED
I
Tuning detection signal input from the tuner unit “L”: tuned
4
SIRCS
I
Remote control signal input
5 to 7
SUR1 to SUR3
O
Surround signal processor control signal output terminal Not used
8, 9
GND
—
Ground terminal
10
XC-IN
I
Sub system clock input terminal (32.768 kHz)
11
XC-OUT
O
Sub system clock output terminal (32.768 kHz)
12
RESET
I
System reset signal input from the reset signal generator “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
13
X-OUT
O
Main system clock output terminal (16 MHz)
14
VSS
—
Ground terminal
15
X-IN
I
Main system clock input terminal (16 MHz)
16
VCC
—
Power supply terminal (+3.3V)
17
NMI
I
Non-maskable interrupt input terminal
18
NO-USE
—
Not used
19
SCOR
I
Subcode sync (S0+S1) detection signal input from the digital signal processor
20
AC-CUT
I
AC off detection signal input from the reset signal generator “L”: AC cut checked
21
ST-MUTE
O
Tuner muting on/off control signal output “H”: muting on
22
ST-CE
O
PLL chip enable signal output to the tuner unit
23
ST-DOUT
O
PLL serial data output to the tuner unit
24
PWM3
O
RFDC PWM signal output to the RF amplifier (for CD-RW)
25
ST-DIN
I
PLL serial data input from the tuner unit
26
PWM2
O
PWM signal output to the RF amplifier (for CD-RW)
27
ST-CLK
O
PLL serial data transfer clock signal output to the tuner unit
28
PWM1
O
Focus servo drive PWM signal output to the RF amplifier (for CD-RW)
29
IIC-CLK
I/O
Communication data reading clock signal input or transfer clock signal output with the fluorescent
indicator tube driver
indicator tube driver
30
IIC-DATA
I/O
Communication data bus with the fluorescent indicator tube driver
31
TXD1
—
Not used
32
SQ-DATA
I
Subcode Q data input from the digital signal processor
33
SQ-CLK
O
Subcode Q data reading clock signal output to the digital signal processor
34
SENS
I
Internal status detection monitor input from the digital signal processor
35
CD-DATA
O
Serial data output to the digital signal processor
36
XLT
O
Serial data latch pulse output to the digital signal processor
37
CD-CLK
O
Serial data transfer clock signal output to the digital signal processor
38
CD-POWER
O
Power on/off control signal output for the CD section “H”: power on
39
CLOCK-OUT
O
Clock (32.768 kHz) signal output terminal (for test mode)
40
LD ON
O
Laser diode on/off control signal output to the RF amplifier “L”: laser diode on
41
GC RESET
I
Reset signal output to the fluorescent indicator tube driver “L”: reset
42
NO-USE
—
Not used
43
XRST
O
Reset signal output to the digital signal processor and motor/coil driver “L”: reset
44
LOAD-IN
O
Turn motor drive signal output
45
LOAD-OUT
O
Turn motor drive signal output
46
OPEN-SW
I
Disc tray open detection signal input terminal “L”: disc tray open
47
CLOSE-SW
I
Disc tray close detection signal input terminal “L”: disc tray close
50
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