TVP5160
SLES135E–FEBRUARY 2005–REVISED APRIL 2011
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Table 3-83. AGC White Peak Processing
Subaddress 74h
Default
00h
7
6
5
4
3
2
1
0
Luma peak A
Reserved
Color burst A
Sync height A
Luma peak B
Composite
peak
Color burst B
Sync height B
Luma peak A: Use of the luma peak as a video amplitude reference for the back-end feed-forward type AGC algorithm
0 = Enabled (default)
1 = Disabled
Color burst A: Use of the color burst amplitude as a video amplitude reference for the back-end
NOTE: Not available for SECAM, component and B/W video sources.
0 = Enabled (default)
1 = Disabled
Sync height A: Use of the sync height as a video amplitude reference for the back-end feed-forward type AGC algorithm
0 = Enabled (default)
1 = Disabled
Luma peak B: Use of the luma peak as a video amplitude reference for front-end feedback type AGC algorithm
0 = Enabled (default)
1 = Disabled
Composite peak: Use of the composite peak as a video amplitude reference for front-end feedback type AGC algorithm
NOTE: Required for CVBS video sources
0 = Enabled (default)
1 = Disabled
Color burst B: Use of the color burst amplitude as a video amplitude reference for front-end feedback type AGC algorithm
NOTE: Not available for SECAM, component and B/W video sources
0 = Enabled (default)
1 = Disabled
Sync height B: Use of the sync-height as a video amplitude reference for front-end feedback type AGC algorithm
0 = Enabled (default)
1 = Disabled
NOTE: If all 4 bits of the lower nibble are set to 1111b (that is, no amplitude reference selected), then the front-end analog and digital
gains are automatically set to nominal values.
If all 4 bits of the upper nibble are set to 1111b (that is, no amplitude reference selected), then the back-end gain is set automatically to
unity. If the input sync height is greater than 100% and the AGC-adjusted output video amplitude becomes less than 100%, then the
back-end scale factor attempts to increase the contrast in the back-end to restore the video amplitude to 100%.
Table 3-84. F-Bit and V-Bit Control
Subaddress 75h
Default
16h
7
6
5
4
1
3
2
1
1
0
Reserved
F and V [1:0]
Reserved
F and V [1:0]
F AND V(1)
LINES PER FRAME
Standard
F BIT
V BIT
ITU-R BT.656
ITU-R BT 656
Forced to 1
Toggles
00 =
Nonstandard even
Nonstandard odd
Standard
Switch at field boundary
Switch at field boundary
ITU-R BT.656
ITU-R BT 656
Toggles
01 = (default)
Nonstandard
Standard
Switch at field boundary
ITU-R BT.656
ITU-R BT 656
Pulsed mode
10 =
11 =
Nonstandard
Reserved
Switch at field boundary
(1) F and V control bits are only enabled for F-bit control modes 01 and 10 (see register 69h).
72
Internal Control Registers
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