SAA7128H Ver la hoja de datos (PDF) - Philips Electronics
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SAA7128H Datasheet PDF : 56 Pages
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Philips Semiconductors
Digital video encoder
Product specification
SAA7128H; SAA7129H
Table 19 Subaddress 4EH
BIT
7 to 6
5 to 0
SYMBOL
−
FADE1[5:0]
DESCRIPTION
These 2 bits are reserved; each must be set to logic 0.
These 6 bits form factor FADE1 which determines the ratio between the MPEG and
video input signal in the resulting video data stream if the key colour 1 is detected in the
MPEG input signal.
FADE1 = 00H: 100% MPEG, 0% video
FADE1 = 3FH: 100% video, 0% MPEG; this is the default value after reset
Table 20 Subaddress 4FH
BIT
7
6
5 to 0
SYMBOL
DESCRIPTION
CFADEM
CFADEV
FADE2[5:0]
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.
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.
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
DESCRIPTION
−
These 2 bits are reserved; each must be a logic 0.
FADE3[5:0] 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
2000 Mar 08
21
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