Yamaha DVD-C996 Service Manual page 33

IC5 : ML6427CS
Lowpass Video Filter
Pin No. Pin Name
1 A/B MUX Logic input pin to select between Bank <A> or <B> of the CV, RGB, or Y/C inputs. Internally pulled high.
2 CV INU /Y1 Unfiltered analog composite video or luma video input. Internally pulled high. A composite or luma or green
signal must be present on either the CV INF A/Y2 or the CV INF B/Y3 input to provide necessary sync signals
to other channels (R, G, B, Y, C). Otherwise, sync must be provided at SYNCIN. For RGB applications the
green channel with sync can be used as an input to this pin.
3 CV INF A/Y2 Filtered analog composite video or luma video input for Bank <A>. Note that SYNC is stripped from this
signal for the other channels. A composite or luma or green signal must be present on either the CV INF A/Y2
or the CV INF B/Y3 input to provide necessary sync signals to other channels (R, G, B, Y, C). Otherwise, sync
must be provided at SYNCIN. For RGB applications the green channel with sync can be used as an input to
this pin.
4 CV INF B/Y3 Filtered analog composite video or luma video input for Bank <B>. Note that SYNC is stripped from this
signal for the other channels.
5 GND Analog ground
6 V CC Analog 5V supply
7 R IN A/Y4 Filtered analog RED video or luma video input for Bank <A>.
8 R IN B/Y5 Filtered analog RED video or luma video input for Bank <B>.
9 G IN A/Y6 Filtered analog GREEN video or luma video input for Bank <A>.
10 G IN B/Y7 Filtered analog GREEN video or luma video input for Bank <B>.
11 B IN A/C1 Filtered analog BLUE video or chroma video input for Bank <A>.
12 B IN B/C2 Filtered analog BLUE video or chroma video input for Bank <B>.
13 SWAP CVF Logic input pin to select whether the outputs of CV OUT 1/Y OUT A and CV OUT 2/Y OUT B are from filtered or
unfiltered CV sources. Internally pulled low.
14 SWAP CVU Logic input pin to select whether the outputs of CV OUT 1/Y OUT A and CV OUT 2/Y OUT B are from filtered or
unfiltered CV sources. Internally pulled low.
15 B OUT /C OUT Analog BLUE video output or chroma output from either B IN A/C1 or B IN B/C2
16 G OUT /Y OUT D Analog GREEN video output or luma output from either G IN A/Y6 or G IN B/Y7
17 V CCO RGB 5V-power supply for output buffers of the RGB drivers
18 R OUT /Y OUT C Analog RED video output or luma output from either R IN A/Y4 or R IN B/Y5
19 GNDO Ground for output buffers
20 CV OUT 2/Y OUT B Composite video output for channel 2 or luma output.
21 CV OUT 1/Y OUT A Composite video output for channel 1 or luma output.
22 V CCO CV 5V-power supply for output buffers of the CV drivers
23 SYNCIN Input for an external H-sync logic signal for filtered channels. TTL or CMOS. For normal operation SYNCOUT
is connected to SYNCIN.
24 SYNCOUT Logic output for H-sync detects for CV INF A/Y2 or CV INF B/Y3. TTL or CMOS. For normal operation SYNCOUT
is connected to SYNCIN.
A/B MUX
1
CV INU /Y1
2
CV INF A/Y2
3
CV INF B/Y3
4
GND
5
V CC
6
R IN A/Y4
7
R IN B/Y5
8
G IN A/Y6
9
G IN B/Y7
10
B IN A/C1
11
B IN B/C2 12
DVD-C996/DV-C6280
SYNCOUT
24
SYNCIN
23
V CCO CV
22
CV OUT 1/Y OUT A
21
CV OUT 2/Y OUT B
20
GNDO
19
R OUT /Y OUT C
18
V CCO RGB
17
G OUT /Y OUT D
16
B OUT /C OUT
15
SWAP CVU
14
13 SWAP CVF
Function
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