22051AKHC View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

View to exact match

22051AKHC

Multistandard Digital Video Decoder Three-Line Adaptive Comb Decoder Family, 8 & 10 bit

Fairchild Semiconductor 

TMC22x5yA

PRODUCT SPECIFICATION

Control Register Definitions (continued)

Comb Filter Control (0C)

7

6

5

4

3

2

1

0

ADAPT

YCES

YCSEL

COMB

Reg Bit

0C

7-6

Name

ADAPT

Description

Adaption mode. Sets the 3-line comb filter adaption mode in NTSC.

ADAPT[1:0]

Function

00

Adapts to best of 3 types of line based comb filters in NTSC

only.

01

Adapts to the best of two field or frame based comb filters

in NTSC only.

10

3 line (tap) comb only. Never adapts to a 2 line (tap) filter.

The higher set of comb filter error signals are sent to the

XLUT. NTSC or PAL comb filter.

11

Adapts to best of two 3 line chroma comb filters in PAL only.

0C

5

YCES

YC input error signal control. Error signal control for YC input, luma comb.

YCES

0

1

Function

LPF and HPF error signal, between (0H & 1H) or (1H & 2H) in

NTSC or between (0H & 2H) in PAL,are sent to XLUT

LPF error signal, between (0H & 1H) and (1H & 2H) in NTSC or

between (0H & 2H) in PAL, are sent to XLUT

0C

4

YCSEL

Luma/chroma comb filter select. Selects luma or chroma comb filter.

YCSEL

0

1

Chroma comb filter

Luma comb filter

Function

0C

3-0

COMB

Comb filter architecture.

COMB

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

Function

YC or composite comb filter architectures

PAL or NTSC 3 line comb

NTSC 3 line comb (0H & 1H)

NTSC 3 line comb (1H & 2H)

NTSC 2 line comb (0H & 1H)

NTSC (2 line) field comb

NTSC or PAL field comb

NTSC (2 line) frame comb

NTSC frame comb

D1 comb filter architectures

3 line comb

3 line comb (0H & 1H)

3 line comb (1H & 2H)

3 line comb (0H & 2H)

(2 line) field comb

field or 2 line (0H & 1H) comb

(2 line) frame comb

frame comb

20

REV. 1.0.0 2/4/03

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