Datasheet

TVP5158, TVP5157, TVP5156
SLES243G –JULY 2009–REVISED APRIL 2013 www.ti.com
Table 4-20. Luminance Processing Control 1
Subaddress 18h
Default 40h
7 6 5 4 3 2 1 0
NTSC_Ped Reserved Luminance signal delay [2:0]
NTSC_Ped
Specifies whether NTSC composite video inputs are compliant with NTSC-M or NTSC-J.
0 NTSC-M (714/286 ratio, w/ pedestal) - default
1 NTSC-J (714/286 ratio, w/o pedestal)
Luminance signal delay [2:0]
Luminance signal delays respect to chroma signal in 1x pixel clock increments.
011 3 pixel clocks delay
010 2 pixel clocks delay
001 1 pixel clocks delay
000 0 pixel clocks delay (default)
111 -1 pixel clocks delay
110 -2 pixel clocks delay
101 -3 pixel clocks delay
100 0 pixel clocks delay
Table 4-21. Luminance Processing Control 2
Subaddress 19h
Default 00h
7 6 5 4 3 2 1 0
Luma filter select [1:0] Reserved Peaking gain [1:0] Trap filter select [1:0]
Luma filter selected [1:0]
00 Luminance adaptive comb enable (default)
01 Luminance adaptive comb disable (trap filter selected)
10 Luma comb/trap filter bypassed
11 Reserved
Peaking gain [1:0]
00 0 (default)
01 0.5
10 1
11 2
Trap filter select [1:0]
Selects one of the four trap filters to produce the luminance signal by removing the chrominance signal from the composite video
signal. The stop band of the chroma trap filter is centered at the chroma subcarrier frequency with the stop-band bandwidth
controlled by the two control bits.
Trap filter stop-band bandwidth (MHz)
Filter select [1:0] NTSC ITU-R BT.601 PAL ITU-R BT.601
00 = (default) 1.2129 1.2129
01 0.8701 0.8701
10 0.7183 0.7383
11 0.5010 0.5010
52 Internal Control Registers Copyright © 2009–2013, Texas Instruments Incorporated
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