Datasheet

TVP5146M2
SLES141H –JULY 2005– REVISED FEBRUARY 2012 www.ti.com
Table 2-26. Chrominance Processing Control 1 Register
Subaddress 0Dh
Default 00h
7 6 5 4 3 2 1 0
Reserved Color PLL reset Chroma Reserved Automatic color gain control [1:0]
adaptive comb
enable
Color PLL reset:
0 = Color subcarrier PLL not reset (default)
1 = Color subcarrier PLL reset
Chrominance adaptive comb enable:
This bit is effective on composite video only.
0 = Enable (default)
1 = Disable
Automatic color gain control (ACGC) [1:0]:
00 = ACGC enabled (default)
01 = Reserved
10 = ACGC disabled, ACGC set to the nominal value
11 = ACGC frozen to the previously set value
Table 2-27. Chrominance Processing Control 2 Register
Subaddress 0Eh
Default 0Eh
7 6 5 4 3 2 1 0
Reserved PAL WCF Chrominance filter select [1:0]
compensation
PAL compensation:
0 = Disabled
1 = Enabled (default)
WCF:
Wideband chroma LPF filter
0 = Disabled
1 = Enabled (default)
Chrominance filter select [1:0]:
00 = Disabled
01 = Notch 1
10 = Notch 2 (default)
11 = Notch 3
See Figure 2-6 and Figure 2-7 for characteristics.
Table 2-28. Component Pr Saturation Register
Subaddress 10h
Default 80h
7 6 5 4 3 2 1 0
Pr saturation [7:0]
Pr saturation [7:0]:
This register works only with YPbPr component video. For RGB video, use the AFE gain registers.
0000 0000 = minimum
1000 0000 = default
1111 1111 = maximum
For component video, the total Pr gain relative to the nominal Pr gain as a function of the Pr saturation [7:0] setting is as follows:
Pr Gain = (nominal_chrominance_gain) × (Pr saturation [7:0] / 128)
48 Functional Description Copyright © 2005–2012, Texas Instruments Incorporated
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