System Control - System Control Peripheral Circuit Interface; (Ma-341 Board Ic160); System Control And Rf Modulator - Input Selection Block Interface; System Control - Video/Rp Block Interface (Ma-341 Board Ic160) - Sony SLV-L49 Service Manual

5-3. SYSTEM CONTROL — SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE

(MA-341 BOARD IC160)

Signal Pin No.
MA-341 Board
RESET
IC160#¢
MA-341 Board
I2C DATA 1
IC160#™
MA-341 Board
I2C CLOCK 1
IC160#¡
MA-341 Board
I2C DATA VIDEO
IC160&™
MA-341 Board
I2C CLOCK VIDEO
IC160&¡
MA-341 Board
*(ARC) S OUT 1
IC160$™
MA-341 Board
*(ARC) CLK 1
IC160$¡
* ; L52: PA/PC, L72HF: PA/PC, L89HF: MX/CS/VZ model only
5-4. SYSTEM CONTROL AND RF MODULATOR — INPUT SELECTION BLOCK
INTERFACE (MA-341 BOARD IC160)
Signal Pin No.
MA-341 Board
ANT SEL
IC160@¡
5-5. SYSTEM CONTROL — VIDEO/RP BLOCK INTERFACE (MA-341 BOARD IC160)
Signal Pin No.
MA-341 Board
RF SWP
IC160!•
MA-341 Board
QVD
IC160!£
MA-341 Board
C SYNC
IC160%•
*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-341 BOARD IC160)
Signal Pin No.
MA-341 Board
A MUTE
IC160^£
MA-341 Board
AF REC P
IC160@™
• Abbreviation
MX : Mexican
PA : Panama
PC : Colombia
CS : Chilian, Bolivia, Peru
VZ : Venezuelan
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 "L" 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 PAUSE
*1 *1 *1
L *2 L
*3 *3 *3
TAPE
PB REC
UNLOADING PAUSE
L L L
L L L
5-2
REC
*1
L
*3
REC
H
H