ml6440 Micro Electronics Corporation, ml6440 Datasheet - Page 8

• Manufacturer Part Number: ml6440
• Description: Multi-standard 8-bit Adaptive Digital Input Comb Filter
• Manufacturer: Micro Electronics Corporation

ML6440
Mode—Function
Value
Parallel Mode
Input Pin
8
BIT
COMB MODE, D[3,2]
ADAPTION THRESHOLD D[6,5,4]
00
01
10
11
010 to 110
000
001
111
Y+C or CV
Y+C = 1
CI7/DI7
CV = 0
Select
D7
Table 2. Control Register Format D[7:0] (Serial or Parallel Mode)
Y 100% comb active, C 100% comb active
Threshold
Adaption
AT2 = 0
CI6/DI6
Y adaptive, C comb 100% active
PREAMBLE
STANDARD/RATE
NTSC (f
PAL (f
Bandsplitting only (no combing)
or 1
D6
2
Y adaptive, C adaptive
SC
Table 3. Clock Frequency Requirements
SC
= 4.43MHz)
Table 4. Adaption Threshold Bit Table
= 3.58MHz)
ADAPTION THRESHOLD LEVEL
Automatic threshold for minimal comb artifact generation for various video
source material.
Threshold for computer graphics applications, minimizing dot crawl on
bold lettering.
Various degrees of thresholds.
Threshold for better reproduction of natural photographic images.
Threshold
Adaption
NTSC
Table 5. Comb Mode Bit Table
AT1 = 0
CI5/DI5
Table 1. Serial Data Format
DATA ADDRESS (B3)
or 1
D5
1
Threshold
Adaption
AT0 = 0
CI4/DI4
or 1
D4
0
13.5MHz
13.5MHz
CCIR601
HEX
CM1 = 0
CI3/DI3
Comb
Mode
or 1
D3
1
DATA (D[7:0]
SQUARE PIXEL
12.27MHz
14.75MHz
Y 100% comb active, C 100% comb active
Not recommended due reduced performance
Y adaptive, C comb 100% active
CM0 = 0
Bandsplitting only (no combing)
CI2/DI2
Comb
Mode
or 1
D2
0
Y adaptive, C adaptive
2
)
Square Pixel/
CCIR601 = 0
Sq. Pixel = 1
PAL
CCIR601
CI1/DI1
Select
D1
NTSC = 0
or NTSC
PAL = 1
CI0/DI0
Select
PAL
D0