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PRELIMINARY
TV ENCODER
S3C6400X RISC MICROPROCESSOR
17-4
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
COMPOSITION OF ANALOG COMPOSITE SIGNAL
13.5MHz (1 Field)
Active
Bur
s
t
Mac
rovision Burst
Back Porch
Front
Porch
Data
White Level
Black Level
Blank Level
Sync Level
100 IRE
7.5 IRE
40 IRE
Figure 17-3. Composition of Analog Composite Signal
Figure 17-3 shows horizontal timing. In X axis for TV composite out, it divide 3 timing parts. It is Back-Porch,
Active and Front-Porch. Back-Porch and Front-Porch are to synchronize signal. And Active-Region contains valid
data.
In Y axis for TV composite out, it contains luminance and chrominance component. DC-level in Figure 17-3
present luminance component. Also, Chrominance component is sampled by Burst frequency. Chrominance
component is shown by sine-wave form in Figure 17-3.
In according to TV system which are NTSC or PAL, it distinguishes Black-level from Blank-level.