ML6427 데이터 시트보기 (PDF) - Fairchild Semiconductor
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ML6427 Datasheet PDF : 17 Pages
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ML6427
UNFILTERED
80ns±10ns DELAY
R
OSD
G
(ON-SCREEN DISPLAY)
PROCESSOR
B
ML6427
SCART/QUAD VIDEO
FILTER AND DRIVER
FILTERED
ROUTPUT
GOUTPUT
BOUTPUT
TO MUX OR
OTHER
PROCESSING
ML6431
GENLOCK/CLOCK
GENERATOR
FAST BLANKING INTERVAL
OR ALPHA-KEY SIGNAL
13.5MHz/
27MHz
DQ
DELAY AT 13.5MHz IS APPROXIMATELY 74ns
FAST BLANKING
INTERVAL
OR ALPHA-KEY
SIGNAL
Figure 9. Synchronizing the Filter Delay with Fast Blanking or Alpha-Key Signals in OSD Applications
19
GNDO
CVINU/Y1
2
CVINFA/Y2
3
CVINFB/Y3
4
RINA/Y4
7
RINB/Y5
8
GINA/Y6
9
GINB/Y7
10
BINA/C1
11
BINB/C2
12
5
GND
SYNCIN
23
SYNCOUT
24
17
VCCORGB
22
VCCOCV
6
VCC
CVOUT1/YOUTA
21
ML6427
A/B MUX
1
CVOUT2/YOUTB
20
ROUT/YOUTC
18
GOUT/YOUTD
16
BOUT/COUT
15
SWAP CVF SWAP CVU
13
14
220µF
75Ω
VIDEO CABLES
330pF
CV/Y
MODULATOR
220µF
75Ω
CV/Y
220µF
220µF
220µF
330pF
75Ω
75Ω
75Ω
MODULATOR
R/Y
G/Y
B/C
OPTIONAL FOR DC COUPLED APPLICATIONS
H SYNC OUT
INPUTS
Bank A:
Bank B:
Other:
RGB, CV filtered path
RGB, CV filtered path
CV unfiltered path, Sync IN (slave mode)
OUTPUTS
Option 1: 2 CV outputs + 2 TV modulator outputs, 1 RGB output
Option 2: 2 CV outputs + 1 TV modulator output, 1 S-video output
Other: Sync output (buffered stripped sync)
Figure 10. Basic Application for PAL
13
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