Sony HCD-GTX777, Service Manual

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HCD-GTX777/GTX787/GTX888
74
• IC Pin Function Descriptions
IC401 R5F3640MDFAR (System Controller) Main board
Pin No. Pin Name I/O Pin Description
1 REQ
I Zipang decoder request pin to master control.
2 RST
O
Reset signal output to the Zipang IC (digital signal processor) “L”:reset
3 M-MUTE
O
Control port for Zipang motor driver mute.
4 SIRCS
I
Remote control signal input
5 CCE
O
Chip enable contor port to Zipang IC.
6 CD CLK (BUCK)
O
Serial data transfer clock signal to Zipang IC
7 USB SEL-SW
O
USB and ZIPANG (CD) control switch CD(H) / USB(L)
8 BYTE
—
Ground terminal
9 CNVss
—
Ground terminal
10 XC-IN
I
Sub system clock input terminal (32.768kHz)
11 XC-OUT
O
Sub system clock output terminal (32.768kHz)
12 RESET
I
System reset signal input from the reset signal IC “L”: reset
After the power supply rises, “L” is input for several hundreds msec and then change to “H”.
13 X-OUT
O
Main system clock output terminal (5MHz)
14 VSS
—
Ground terminal
15 X-IN
—
Main system clock input terminal (5MHz)
16 VCC
—
Power supply terminal (+3.3V)
17 NMI
I
Non-maskable interrupt input terminal
18 CAPM+ O Capstan motor drive signal output
19 SBSY
I
Subcode sync detection signal input from the digital signal processor (Zipang IC).
20 AC-CUT
I
AC off detection signal input from the reset signal IC “L”: AC Cut detected
21 TMR
O
CDM turning motor control signal output
22 E-1
I
Disc tray status detection signal input from CDM
23 E-3
I
Disc tray status detection signal input from CDM
24 OPEN-SW
I
Eject detection signal input from CDM
25 TBL-SENSE
I
Disc tray position detection signal input from CDM
26 CIG BK
O
Backlight control signal for CIG (Chip In Glass) of fl uorescent indicator tube.
27 E-2
I
Disc tray status detection signal input from CDM
28 CIG LATCH
O
Latch control signal for CIG (Chip In Glass) of fl uorescent indicator tube.
29 IIC-CLK I/O Clock signal for IIC communcation for Master Control controller.
30 IIC-DATA
I/O
Data signal for IIC communcation for Master Control controller.
31 CIG DATA
O
Data signal for CIG (Chip In Glass) of FL Display.
32 TMF
O
CDM turning motor control signal output
33 CIG CLK
O
Clock signal for CIG (Chip In Glass) of FL Display.
34 USB SERIAL CTS0
I
Serial send control input pin from USB IC
35 USB SERIAL TxD0
O
UART serial transmission data line to USB IC.
36 USB SERIAL RxD0
I
UART serial reception data line from USB IC.
37 USB-RST
O
Reset signal output to USB control IC “L”: reset
38 USB SERIAL RTS0
O
Serial receive control output pin from USB IC.
39 B-TRIG
O
Deck side trigger plunger drive signal output “H”:plunger on
40 EFFECTOR-CTRL 1
O
Effector circuitry mode control 1, “H”: Delay/Effector Off , “H”: Flanger/Chorus.
41 EFFECTOR-CTRL 3
O
Effector circuitry mode control 3,”H”: Chorus/ Effector Off, “L”: Flanger/ Delay.
42 LED DRIVER-LATCH
O
Latch control signal for LED Driver IC.
43 LED DRIVER-DATA
O
Data signal for LED Driver IC.
44 LED DRIVER-CLOCK
O
Clock signal for LED Driver IC.
45 PROTECT2
O
FAN current detect and Regulator Short detect, ON(H)/ OFF(L)
46 STBY LED
O
LED drive signal output of POWER indicator.
47 B SHUT
I
Shut off detection signal input from deck A side reel pulse detector (A/D input)
48 STBY RELAY O Main power on/off control signal output “H”:power on
49 STK-MUTE
O
Power amplifi er and sub woofer amplifi er on/off control signal output “H”: amplifi er on
50 FAN CONTROL
O
Fan on/off control port.
51 LINE-MUTE
O
Line muting on/off control signal “L”:muting on
52 FRONT-RELAY
O
Relay drive signal output for the front speakers “H”:relay on
53 LINK RELAY
O
Surround speaker mode control signal “H”:LINK “L”:MATRIX SURROUND1/2