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Circuit Description
Pin41: Switch for S- VHS (in)
H: S- VHS mode (Y/C separated mode)
Pin42: Skew output
H: Skew ON
Pin43: A2 stereo data input 1
Pin44: A2 stereo data input 2
Pin45: Sound mute (out)
Pin46: Line mute (out)
H: Mute ON
Pin47: Option switch scan output 3
Pin48: Option switch scan output 2
Pin49: Option switch scan output 1
Pin50: Key scan output 3
Pin51: Key scan output 2
Pin52: Key scan output 1
Pin53: Key scan input 4
Pin54: Key scan input 3
Pin55: Key scan input 2
Pin56: Key scan input 1
Pin57: OSD (On Screen Display) banking output
Pin58: Not used
Pin59: OSD blue output
Pin60: OSD green output
Pin61: OSD red output
Pin62: Vertical synchronisation pulse input for OSD
Pin63: Horizontal synchronisation pulse input for OSD
Pin64: Power supply (+5V)
3. DAC (IC809) Pin Description
d
Pinl: Power supply (+5V)
Pin2: Data input from CPU (Pin26)
Pin3: Clock input from CPU (Pin25)
Pin4: Load input from CPU (Pin23)
Pin5: Surround ON/OFF output
H: Surround ON
Pin6: Not used
Pin7: SIF System(M) output
Pin8: Ground
Pin9: SIF System (1)output
Pinl O:SIF System (B/G, D/K) output
AUTO
BIG
D/K
I NTSC4.43
Pin 7
L
H
L
H
H
Pin 9
L
L
H
L
L
Pinl O
L
L
H
H
H
-.-'
Pinl 1: Volume output
Pinl 2: Surround level output
Pinl 3: Balance output
Pin14: Treble output
Pinl 5: Bass output
Pinl 6: Power supply (+5V)
.
–3–
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