Pioneer PDP-R04E Service Manual page 171

5
TA1287FG (AV BOARD ASSY : IC8906)
• RGB to YUV/IQ High-speed Matrix IC
Block Diagram
VIN 1
YIN 2
UIN 3
CPIN 4
GND 5
RIN 6
GIN 7
8
BIN
Pin Function
No. Pin Name I/O
1 VIN I
2 YIN I
3 UIN I
4 CPIN I
−
5 GND
6 RIN I
7 GIN I
8 BIN I
9 YS1 I
10 YS2 I
11 YS3 I
−
12 VCC
13 VOUT O
14 YOUT O
15 UOUT O
16 Matrix Control I
5
6
CLAMP
CLAMP
CLAMP
Y/I
RGB
Y
YUV/IQ
U/Q
Input R-Y (V) or R signal through a clamping capacitor.
Input Y or G signal through a clamping capacitor.
Input B-Y (U) or B signal through a clamping capacitor.
Input clamping pulse. Threshold: 0.75V
Ground
Input R or R-Y (V) signal through a clamping capacitor.
Input G or Y signal through a clamping capacitor.
Input B or B-Y (U) signal through a clamping capacitor.
Select to switch mixing ratio. Threshold: 0.75V
Select to switch mixing ratio. Threshold: 0.75V
Select to switch mixing ratio. Threshold: 0.75V
Power supply 9V
Output R-Y (V) or R signal.
Output Y or G signal.
Output B-Y (U) or B signal.
This pin's voltage control the matrix coefficient for output signals. Selects the output mode.
6
7
16
MATRIX SW Matrix Control
15 UOUT
B-Y/Q-MIX
14 YOUT
Y-MIX
13 VOUT
R-Y/I-MIX
12 VCC
TV/Ext.
MIX Ys
CLAMP 11 YS3
10
CLAMP YS2
9
CLAMP YS1
Pin Function
PDP-R04E
7
8
A
B
C
D
E
F
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