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5-2
5-3. SYSTEM CONTROL — SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE
(MA-405 BOARD IC160)
5-4. SYSTEM CONTROL AND RF MODULATOR — INPUT SELECTION BLOCK INTERFACE (MA-
405 BOARD IC160)
Signal
ANT SEL
Pin No.
MA-405 Board
IC160 wa
I/O
O
I/O level
“H” when RF modulator through.
5-5. SYSTEM CONTROL — VIDEO/RP BLOCK INTERFACE (MA-405 BOARD IC160)
Signal
RF SWP
QVD
C SYNC
Pin No.
MA-405 Board
IC160 qk
MA-405 Board
IC160 qd
MA-405 Board
IC160 tk
TAPE
LOADING
*1
L
*3
TAPE
UNLOADING
*1
L
*3
STOP/FF
/REW
*1
L
*3
PB
*1
*2
*3
REC
*1
L
*3
I/O
O
O
I
REC/
PAUSE
*1
L
*3
*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
A MUTE
AF REC P
Pin No.
MA-405 Board
IC160 yd
MA-405 Board
IC160 ws
TAPE
LOADING
L
L
TAPE
UNLOADING
L
L
STOP/FF
/REW
L
L
PB
L
L
REC
L
H
I/O
O
O
REC/
PAUSE
L
L
Signal
RESET
I2C DATA 1
I2C CLOCK 1
I2C DATA VIDEO
I2C CLOCK VIDEO
(ARC) S OUT 1
(ARC) CLK 1
Pin No.
MA-405 Board
IC160 ef
MA-405 Board
IC160 es
MA-405 Board
IC160 ea
MA-405 Board
IC160 us
MA-405 Board
IC160 ua
MA-405 Board
IC160 rs
MA-405 Board
IC160 ra
I/O
I
I/O
O
I/O
O
I/O
O
I/O level
Normally “H”, “L” when service interruption detected or restored.
Serial communication data to EEPROM I2C161.
Serial communication clock to EEPROM I2C161.
Serial communication data to video and audio microprocessor.
Serial communication clock to video and audio microprocessor.
Serial communication data to ARC microprocessor.
Serial communication clock to ARC microprocessor.