Pioneer pdp-433cmx Service Manual page 164

ML6426CS-1 (RGB ASSY : IC4403)
• LPF IC
•
Pin Assignment (Top View)
A/B MUX
1
R IN A/Y IN A 2
GND 3
V CC 4
R IN B/Y IN B 5
G IN A/U IN A 6
G IN B/U IN B 7
B IN A/V IN A 8
TOP VIEW
•
Block Diagram
R IN A/Y IN A
2
R IN B/Y IN B
5
G IN A/U IN A
6
G IN /U IN B
7
B IN A/V IN A
8
B IN B/V IN B
9
A/B MUX
1
SYNCIN
16
•
Pin Function
PIN NAME FUNCTION
1 A/B MUX Logic input pin to select between
Bank <A> and Bank <B> video inputs.
This pin is internally pulled high.
2 R A/Y A Unfiltered analog R- or Y -channel
IN IN
input for Bank <A>. Sync must be
provided at SYNC IN pin.
3 GND Analog ground
4 V Analog 5V supply
CC
5 R B/Y B Unfiltered analog R- or Y -channel
IN IN
input for Bank <B>. Sync must be
provided at SYNC IN pin.
6 G A/U A Unfiltered analog G- or U-channel
IN IN
input for Bank <A>. Sync must be
provided at SYNC IN pin.
7 G B/U B Unfiltered analog G- or U-channel
IN IN
input for Bank <B>. Sync must be
provided at SYNC IN pin.
164
16 SYNC IN
15 DISABLE
14 GNDO
13
R OUT /Y OUT
12 V CCO
11 G OUT /U OUT
10 B OUT /V OUT
9 B IN B/V IN B
MUX
TRANSCONDUCTANCE
ERROR AMP
MUX
TRANSCONDUCTANCE
ERROR AMP
MUX
TRANSCONDUCTANCE
ERROR AMP
DISABLE
15
PIN NAME
8 B
9 B
10 B
11 G
12 V
13 R
14 GNDO
15 DISABLE
16 SYNC IN
PDP-433CMX
12 4
V CCO V CC
4th-ORDER
FILTER A
+
–
0.5V
4th-ORDER
FILTER B
+
–
0.5V
4th-ORDER
FILTER C
+
–
0.5V
GNDO
14
FUNCTION
A/V A Unfiltered analog B- or V-channel
IN IN
input for Bank <A>. Sync must be
provided at SYNC IN pin.
B/V B Unfiltered analog B- or V-channel
IN IN
input for Bank <B>. Sync must be
provided at SYNC IN pin.
Analog B or V-channel output
OUT
Analog G or U-channel output
OUT
5V power supply for output buffers
CCO
Analog R or Y -channel output
OUT
Analog ground
Disable/Enable pin. Turns the chip off
when logic high. Internally pulled low.
Input for an external H-sync logic
signal for filter channels. CMOS
level input. Active High.
R OUT /Y OUT
2
13
G OUT /U OUT
2
11
B OUT /V OUT
2 10
GND
3