System Control-System Control Peripheral Circuit Interface (Ma-314 Board Ic161); System Control-Audio Block Interface (Ma-314 Board Ic161) - Sony SLV-E177EG Service Manual

5-4. SYSTEM CONTROL – SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE (MA-314 BOARD IC161)
Signal Pin No. I/O
MA-314
RESET I
IC161$£
MA-314
I2C DATA VIDEO O
IC161%™
MA-314
I2C CLOCK VIDEO O
IC161%¡
PLL DATA MA-314
O
I2C DATA 1 IC161@™
MA-314
I2C CLOCK 1 O
IC161!¶
MA-314
(RP) S OUT 1 O
IC161^∞
MA-314
(RP) S CLK 1 O
IC161^¶
5-5. SYSTEM CONTROL – AUDIO BLOCK INTERFACE (MA-314 BOARD IC161)
Signal Pin No. I/O
MA-314
A MUTE O
IC161$•
I/O level
Normally "H", "L" when service interruption is detected or restored.
Serial communication data to video microprocessor.
Serial communication clock with video microprocessor.
Serial communication data to audio microprocessor.
Serial communication clock with audio microprocessor.
Serial communication data to RP microprocessor.
Serial communication clock to RP microprocessor.
STOP/
TAPE TAPE
FF/ PB
LOADING UNLOADING
REW
L L L L
REC •
REC
PAUSE
L H