SAA7128AH_7129AH_15 Datasheet, PDF (9/55 Pages) NXP Semiconductors – Digital video encoder

Philips Semiconductors
Digital video encoder
Product specification
SAA7128AH; SAA7129AH
7.1.1 CONFIGURATION EXAMPLES
Figures 4 to 7 show examples on how to configure the
fader between the input ports and the outputs, separated
into the composite (and S-video) encoder and the RGB
encoder.
7.1.1.1 Configuration 1
Input MP_A can be faded into MP_B. The resulting output of
the fader is then encoded simultaneously to composite
(and S-video) and RGB output (RGBIN = ENCIN = 1).
In this example, either MP_A or MP_B could be an overlay
(menu) signal to be faded smoothly in and out.
7.1.1.3 Configuration 3
Input MP_B is passed directly to the RGB output, assuming
e.g. it contains video including overlay. MP_A is equivalently
passed through the inactive fader to the composite (and
S-video) output, assuming e.g. it contains video excluding
overlay (RGBIN = 0, ENCIN = 1).
MPA
MPB
FADER BYPASS
ENCODER
PATH
RGB PATH
e.g.
video
recorder
e.g. TV
MPA
FADER
MP
OUTPUT
ENCODER
PATH
e.g.
video
recorder
MHB577
Fig.6 Configuration 3.
MPB
VP
RGB PATH
e.g. TV
7.1.1.4 Configuration 4
MHB575
Fig.4 Configuration 1.
Only MP_B input is in use; its signal appears both composite
(and S-video) and RGB encoded (RGBIN = ENCIN = 0).
7.1.1.2 Configuration 2
Input MP_A can be faded into MP_B. The resulting output of
the fader is then encoded to RGB output, while the signal
coming from MP_B is fed directly to composite (and S-video)
output (RGBIN = 1, ENCIN = 0). Also in this example,
either MP_A or MP_B could be an overlay (menu) signal to be
faded smoothly in and out, whereas the overlay appears
only in the RGB output connected to the TV set.
handbook, halfpage
MPA
MPB
ENCODER
PATH
RGB PATH
e.g. video recorder
e.g. TV
MHB578
Fig.7 Configuration 4.
MPA
MPB
FADER
MP
OUTPUT
VP
ENCODER
PATH
RGB PATH
e.g.
video
recorder
e.g. TV
MHB576
Fig.5 Configuration 2.
2003 Dec 09
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