ML6440

8

BIT

D7

D6

D5

D4

D3

D2

D1

D0

Mode—Function

Y+C or CV

Adaption

Adaption

Adaption

Comb

Comb

Square Pixel/

PAL

Select

Threshold

Threshold

Threshold

Mode

Mode

CCIR601

or NTSC

2

1

0

1

0

Select

Select

Value

Y+C = 1

AT2 = 0

AT1 = 0

AT0 = 0

CM1 = 0

CM0 = 0

Sq. Pixel = 1

PAL = 1

CV = 0

or 1

or 1

or 1

or 1

or 1

CCIR601 = 0

NTSC = 0

Parallel Mode

CI7/DI7

CI6/DI6

CI5/DI5

CI4/DI4

CI3/DI3

CI2/DI2

CI1/DI1

CI0/DI0

Input Pin

PREAMBLE

Table 1. Serial Data Format

Table 2. Control Register Format D[7:0] (Serial or Parallel Mode)

Table 3. Clock Frequency Requirements

STANDARD/RATE

CCIR601

SQUARE PIXEL

13.5MHz

12.27MHz

13.5MHz

14.75MHz

COMB MODE, D[3,2]

NTSC

PAL

00

Y adaptive, C comb 100% active

Y adaptive, C adaptive

01

Y adaptive, C adaptive

Y adaptive, C comb 100% active

10

Y 100% comb active, C 100% comb active

Y 100% comb active, C 100% comb active

Not recommended due reduced performance

11

Bandsplitting only (no combing)

Bandsplitting only (no combing)

Table 4. Adaption Threshold Bit Table

ADAPTION THRESHOLD D[6,5,4]

ADAPTION THRESHOLD LEVEL

000

Automatic threshold for minimal comb artifact generation for various video

source material.

001

Threshold for computer graphics applications, minimizing dot crawl on

bold lettering.

010 to 110

Various degrees of thresholds.

111

Threshold for better reproduction of natural photographic images.

Table 5. Comb Mode Bit Table