System Control - System Control Peripheral Circuit Interface (Ma-405 Board Ic160); System Control And Rf Modulator - Input Selection Block Interface (Ma-405 Board Ic160); System Control - Video/Rp Block Interface (Ma-405 Board Ic160); System Control - Audio Block Interface (Ma-405 Board Ic160) - Sony LX40 Service Manual

5-3. SYSTEM CONTROL — SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE
(MA-405 BOARD IC160)
Signal Pin No.
MA-405 Board
RESET
IC160 ef
MA-405 Board
I2C DATA 1
IC160 es
MA-405 Board
I2C CLOCK 1
IC160 ea
MA-405 Board
I2C DATA VIDEO
IC160 us
MA-405 Board
I2C CLOCK VIDEO
IC160 ua
MA-405 Board
(ARC) S OUT 1
IC160 rs
MA-405 Board
(ARC) CLK 1
IC160 ra
5-4. SYSTEM CONTROL AND RF MODULATOR — INPUT SELECTION BLOCK INTERFACE (MA-
405 BOARD IC160)
Signal Pin No.
MA-405 Board
ANT SEL
IC160 wa
5-5. SYSTEM CONTROL — VIDEO/RP BLOCK INTERFACE (MA-405 BOARD IC160)
Signal Pin No.
MA-405 Board
RF SWP
IC160 qk
MA-405 Board
QVD
IC160 qd
MA-405 Board
C SYNC
IC160 tk
*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-405 BOARD IC160)
Signal Pin No.
MA-405 Board
A MUTE
IC160 yd
MA-405 Board
AF REC P
IC160 ws
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
5-2
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
REC/
PAUSE
*1
L
*3
REC/
PAUSE
L
L