8 luminance processing control 2 register, 9 luminance processing control 3 register, 10 luminance brightness register – Texas Instruments TVP5147M1PFP User Manual
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Functional Description
35
SLES140A—March 2007
TVP5147M1PFP
2.11.8
Luminance Processing Control 2 Register
Subaddress
07h
Default
00h
7
6
5
4
3
2
1
0
Luma filter select [1:0]
Reserved
Peaking gain [1:0]
Reserved
Luma filter selected [1:0]:
00 = Luminance adaptive comb enabled (default on CVBS)
01 = Luminance adaptive comb disabled (trap filter selected)
10 = Luma comb/trap filter bypassed (default on S-video, component mode, and SECAM)
11 = Reserved
Peaking gain [1:0]:
00 = 0 (default)
01 = 0.5
10 = 1
11 = 2
2.11.9
Luminance Processing Control 3 Register
Subaddress
08h
Default
02h
7
6
5
4
3
2
1
0
Reserved
Trap filter select [1:0]
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 =
1.2129
1.2129
01 =
0.8701
0.8701
10 = (default)
0.7183
0.7383
11 =
0.5010
0.5010
2.11.10 Luminance Brightness Register
Subaddress
09h
Default
80h
7
6
5
4
3
2
1
0
Brightness [7:0]
Brightness [7:0]: This register works for CVBS, S-video, and component video luminance.
1111 1111 = 255 (bright)
1000 0000 = 128 (default)
0000 0000 = 0 (dark)