SAA7128AH 데이터 시트보기 (PDF) - Philips Electronics

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SAA7128AH

Digital video encoder

Philips Electronics 

Philips Semiconductors

Digital video encoder

Product specification

SAA7128AH; SAA7129AH

Table 20 Subaddress 4FH

BIT

7

6

5 to 0

SYMBOL

DESCRIPTION

CFADEM

0 = fader operates in normal mode; default state after reset

1 = the entire video input stream is faded with the colour stored in the LUT

(subaddresses 51H to 53H) regardless of the MPEG input signal. The colour keys are

disabled.

CFADEV

0 = fader operates in normal mode; default state after reset

1 = the entire MPEG input stream is faded with the colour stored in the LUT

(subaddresses 51H to 53H) regardless of the video input signal. The colour keys are

disabled.

FADE2[5:0] These 6 bits form factor FADE2 which determines the ratio between the LUT colour

values (subaddresses 51H to 53H) and the video input signal in the resulting video data

stream if the key colour 2 is detected in the MPEG input signal.

FADE2 = 00H: 100% LUT colour, 0% video

FADE2 = 3FH: 100% video, 0% LUT colour; this is the default value after reset

Table 21 Subaddress 50H

BIT

7 to 6

5 to 0

SYMBOL

−

FADE3[5:0]

DESCRIPTION

These 2 bits are reserved; each must be a logic 0.

These 6 bits form factor FADE3 which determines the ratio between the MPEG and

video input signal in the resulting video data stream if neither the key colour 1 nor the

key colour 2 is detected in the MPEG input signal.

FADE3 = 00H: 100% MPEG, 0% video

FADE3 = 3FH: 100% video, 0% MPEG; this is the default value after reset

Table 22 Subaddress 51H

BIT

7 to 0

SYMBOL

LUTU[7:0]

DESCRIPTION

LUT for the colour values inserted in case of key colour 2 U detection in the MPEG input

data stream.

LUTU[7:0] = 80H; default value after reset

Table 23 Subaddress 52H

BIT

7 to 0

SYMBOL

LUTV[7:0]

DESCRIPTION

LUT for the colour values inserted in case of key colour 2 V detection in the MPEG input

data stream.

LUTV[7:0] = 80H; default value after reset

Table 24 Subaddress 53H

BIT

7 to 0

SYMBOL

LUTY[7:0]

DESCRIPTION

LUT for the colour values inserted in case of key colour 2 Y detection in the MPEG input

data stream.

LUTY[7:0] = 80H; default value after reset

2003 Dec 09

21

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