System Control - System Control Peripheral Circuit Interface (Ma-397 Board Ic160); System Control And Rf Modulator - Input Selection Block Interface (Ma-397 Board Ic160); System Control - Video/Rp Block Interface (Ma-397 Board Ic160); System Control - Audio Block Interface (Ma-397 Board Ic160) - Sony SLV-LX80S Service Manual

5-3. SYSTEM CONTROL — SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE
(MA-397 BOARD IC160)
Signal Pin No.
MA-397 Board
RESET
IC160ef
MA-397 Board
I2C DATA 1
IC160es
MA-397 Board
I2C CLOCK 1
IC160ea
MA-397 Board
I2C DATA VIDEO
IC160us
MA-397 Board
I2C CLOCK VIDEO
IC160ua
MA-397 Board
(ARC) S OUT 1
IC160rs
MA-397 Board
(ARC) CLK 1
IC160ra
5-4. SYSTEM CONTROL AND RF MODULATOR — INPUT SELECTION BLOCK INTERFACE
(MA-397 BOARD IC160)
Signal Pin No.
MA-397 Board
ANT SEL
IC160wa
5-5. SYSTEM CONTROL — VIDEO/RP BLOCK INTERFACE (MA-397 BOARD IC160)
Signal Pin No.
MA-397 Board
RF SWP
IC160qk
MA-397 Board
QVD
IC160qd
MA-397 Board
C SYNC
IC160tk
*1. Synchronized with drum rocation, 30Hz 50% duty pulse.
*2. Normal "L", "H" when video signal is not rgenerated.
*3. Composite sync signal (positive).
5-6. SYSTEM CONTROL — AUDIO BLOCK INTERFACE (MA-397 BOARD IC160)
Signal Pin No.
MA-397 Board
A MUTE
IC160yd
MA-397 Board
AF REC P
IC160ws
I/O
I Normally "H", "L" when service interruption detected or restored.
I/O Serial communication data to EEPROM I2C161.
O Serial communication clock to EEPROM I2C161.
I/O Serial communication data to video and audio microprocessor.
O Serial communication clock to video and audio microprocessor.
I/O Serial communication data to ARC microprocessor.
O Serial communication clock to ARC microprocessor.
I/O
O "H" when RF modulator through.
STOP/FF TAPE
I/O
/REW LOADING
O *1 *1
O L L
I *3 *3
STOP/FF TAPE
I/O
/REW LOADING
O L L
O L L
I/O level
I/O level
TAPE
PB REC
UNLOADING
*1 *1 *1
L *2 L
*3 *3 *3
TAPE
PB REC
UNLOADING
L L L
L L H
5-2
REC/
PAUSE
*1
L
*3
REC/
PAUSE
L
L