Datasheet

Color LPF
2
5 Line
Adaptive
Comb Filter
Notch
Filter
Notch
Filter
Delay
Delay
Contrast
Brightness
Saturation
Adjust
Color LPF
2
Y
Cb
Cr
U
V
Notch
Notch
Delay
Y
Peaking
NTSC/PAL
Remodulation
NTSC/PAL
Demodulation
Line
Delay
CVBS
CVBS
Burst
Accumulator
(U)
Burst
Accumulator
(V)
Filter
Filter
TVP5158, TVP5157, TVP5156
www.ti.com SLES243G –JULY 2009–REVISED APRIL 2013
Figure 3-3. Composite Processor Block Diagram
3.2.3.1 Color Low-Pass Filter
High filter bandwidth preserves sharp color transitions and produces crisp color boundaries. However, for
nonstandard video sources that have asymmetrical U and V side bands, it is desirable to limit the filter
bandwidth to avoid UV crosstalk. The color low-pass filter bandwidth is programmable to enable one of the
three notch filters. Figure 3-4 and Figure 3-5 represent the frequency responses of the wideband color
low-pass filters.
Copyright © 2009–2013, Texas Instruments Incorporated Functional Description 17
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