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ML6440 Datasheet(PDF) 1 Page - Micro Linear Corporation

Part # ML6440
Description  Multi-Standard 8-bit Adaptive Digital Input Comb Filter
PDF  18 Pages
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Manufacturer  MICRO-LINEAR [Micro Linear Corporation]
Direct Link  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation

ML6440 Datasheet(HTML) 1 Page - Micro Linear Corporation

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July 1999
PRELIMINARY
ML6440*
Multi-Standard 8-bit Adaptive Digital Input Comb Filter
1
GENERAL DESCRIPTION
The ML6440 SmartComb™ is a single-chip, 8-bit digital
comb filter that incorporates line delays and adaption
algorithms for NTSC and PAL at both CCIR601 and square
pixel rates. The ML6440 implements bandsplit filters and
a proprietary adaption and decision logic block that
allows for optimum combing over a wide range of video
sources.
The ML6440 contains all the necessary circuitry to provide
high quality combed output of luminance and
chrominance in the Y/C format. Internal filters with
integrated adaption and compensation circuits provide
filtered outputs with optimal video bandwidth and
resolution while suppressing cross-color (rainbow), cross-
luminance (dot crawl) and other corrupting artifacts that
can reduce video compression efficiency.
BLOCK DIAGRAM
FEATURES
s
SmartComb algorithm for automatic or manual
selection adaption thresholds
s
3-line comb with 60+ line frame adjust
s
Comb/notch thresholds set dynamically over 60+ lines
automatically
s
12-bit processing minimizes truncation errors and
maintains signal-to-noise performance
s
Optional 8-bit composite or separated Y/C digital inputs
s
Applications: digital TV, line doubler, imaging
s
Separate comb/notch filter thresholds for Luma and
Chroma channels
s
Optional pin controls or two-wire serial control
interface
s
Operating power dissipation less than 700mW
s
No external components, except diode and caps
* This Part Is End Of Life As Of August 1, 2000
CI2/DI2
CI3/DI3
CI4/DI4
CI5/DI5
CI6/DI6
CI7/DI7
S CLK
S DATA
S/P
SmartComb™
COMB
ADAPTION
AND
DECISION
LOGIC
BANDSPLIT
FILTERS
(NOTCH/DELAY)
39
16
VCC
AVCC
VCC
5
C7
C6
C5
C4
C3
40
41
42
43
44
C2
C1
C0
1
2
3
Y7
Y6
Y5
Y4
Y3
30
31
32
33
34
Y2
Y1
Y0
35
36
37
OE
27
29
28
26
GND
GND
GND
38
17
4
10
11
12
CI0/DI0
CI1/DI1
8
9
CLK
RST
7
6
13
14
15
YI2/CV2
YI3/CV3
YI4/CV4
YI5/CV5
YI6/CV6
YI7/CV7
20
21
22
YI0/CV0
YI1/CV1
18
19
23
24
25
FILTER
AND
COMB
CONTROL
CLOCK BUFFER
1HDL
RESET LOGIC
1HDL
HIGH BAND
LOW BAND
HIGH BAND
LOW BAND
TOTAL BAND
CHROMA
BYPASS
HIGH BAND
LOW BAND
CCIR601/SQ. PIXEL MODE
COMB MODE 0
COMB MODE 1
THRESHOLD CONTROL 0
THRESHOLD CONTROL 1
THRESHOLD CONTROL 2
Y+C/CV INPUT MODE
PAL/NTSC MODE
LUMA BYPASS
DIGITAL
DIGITAL
DIGITAL
CONTROL
MUX
D2
D3
D4
D5
D6
D7
D0
D1


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