KRF-X7775D/X7775D-S/VR-5080/5090
12
CIRCUIT DESCRIPTION
INPUT
Y C SEL A Y C SEL B
(Pin52)
(Pin51)
VIDEO1
L
L
VIDEO2
L
L
VIDEO3
L
L
VIDEO4
L
L
AV-AUX
L
L
DVD
L
L
V MUTE
H
H
INPUT
DSEL A(Pin22) DSEL B(Pin23) DSEL C(Pin24)
CD1
L
H
L
MD/TAPE1
H
H
L
CD-R
L
L
H
VIDEO2
H
L
H
VIDEO3
L
H
H
VIDEO4
H
H
H
DVD
H
L
L
OTHERS
L
L
L
INPUT
Y C SEL A Y C SEL B
(Pin52)
(Pin51)
VIDEO1
L
H
VIDEO2
L
H
VIDEO3
L
H
VIDEO4
L
H
AV-AUX
L
H
DVD
H
L
V MUTE
H
H
INPUT
VSEL(Pin63)
VIDEO1
L
VIDEO2
L
VIDEO3
L
VIDEO4
L
AV-AUX
L
DVD
H
V MUTE
L
INPUT
DSEL A
DSEL B
DSEL C
(Pin22)
(Pin23)
(Pin24)
CD1(OPT)
L
H
L
VIDEO2(COAX)
L
H
L
VIDEO3(COAX)
H
H
L
DVD(OPT/COAX)
H
L
L
OTHERS
L
L
L
Port No.
Port Name
I/O
Function
ACTIVE
H
L
67
VSS
-
GND
68
VDD
-
Power supply (+3.3V).
69
X2
-
Crystal resonator (6MHz) connection.
70
X1
I
Crystal resonator (6MHz) connection.
71
TEST
-
Pull down port.
72
XT2
-
Unused.
73
XT1
-
GND
74
VDD
-
Power supply (+3.3V).
75
AVDD
-
Power supply (+3.3V).
76
NC
-
Unused.
77
C DET
I
Zone A component signal detection.
Detection
78
Y DET
I
Zone A S-terminal signal detection.
Detection
79
CK DET
I
Zone A color killer detection.
80
OPT DET
I
Optical digital input detection.
9. Description of the Circuit Control
9-1 Digital Selector
• VR-5700/5900/5090/KRF-X9995D(for OPT and COAX)
✽
The number in the ( ) is pin number of sub microcomputer.
• VR-5080/KRF-X7775D
9-2 Video Selector
(BA7649AF,BA7611AF,BA7612F,BA7613F)
1
VSEL
2
Y C Select
2
-1 Y Detect(Pin78) = H
2
-2 Y Detect(Pin78) = L
INPUT
CTRL A
CTRL A2
CTRL B
(Pin66)
(Pin64)
(Pin65)
VIDEO1
L
L
H
VIDEO2
L
L
H
VIDEO3
L
L
L
VIDEO4
L
L
H
AV-AUX
L
L
H
DVD
H
H
L
V MUTE
H
H
H
3
CTRL A, CTRL A2, CTRL B
3
-1 C Detect(Pin77) = L
VR-5900/5090/KRF-X9995D
