Texas Instruments TVP5147M1PFP - Manual (Page 60)

Functional Description
52 SLES140A—March 2007 TVP5147M1PFP
2.11.44 AFE Fine Gain for Pb Register
Subaddress 4Ah−4Bh
Default 900h
Subaddress 7 6 5 4 3 2 1 0
4Ah FGAIN 1 [7:0]
4Bh Reserved FGAIN 1 [11:8]
FGAIN 1 [11:0]: This fine gain applies to component Pb.
Fine_Gain = (1/2048) * FGAIN 1, where 0 ≤ FGAIN 1 ≤ 4095
This register works only in manual gain control mode. When AGC is active, writing to any value is ignored.
1111 1111 1111 = 1.9995
1100 0000 0000 = 1.5
1001 0000 0000 = 1.125 (default)
1000 0000 0000 = 1
0100 0000 0000 = 0.5
0011 1111 1111 to 0000 0000 0000 = Reserved
2.11.45 AFE Fine Gain for Y_Chroma Register
Subaddress 4Ch−4Dh
Default 900h
Subaddress 7 6 5 4 3 2 1 0
4Ch FGAIN 2 [7:0]
4Dh Reserved FGAIN 2 [11:8]
FGAIN 2 [11:0]: This gain applies to component Y channel or S-video chroma (see AFE fine gain for Pb
register, Section 2.11.44).
This register works only in manual gain control mode. When AGC is active, writing to any value is ignored.
1111 1111 1111 = 1.9995
1100 0000 0000 = 1.5
1001 0000 0000 = 1.125 (default)
1000 0000 0000 = 1
0100 0000 0000 = 0.5
0011 1111 1111 to 0000 0000 0000 = Reserved
2.11.46 AFE Fine Gain for Pr Register
Subaddress 4Eh−4Fh
Default 900h
Subaddress 7 6 5 4 3 2 1 0
4Eh FGAIN 3 [7:0]
4Fh Reserved FGAIN 3 [11:8]
FGAIN 3 [11:0]: This fine gain applies to component Pr (see AFE fine gain for Pb register, Section 2.11.44).
This register works only in manual gain control mode. When AGC is active, writing to any value is ignored.
1111 1111 1111 = 1.9995
1100 0000 0000 = 1.5
1001 0000 0000 = 1.125 (default)
1000 0000 0000 = 1
0100 0000 0000 = 0.5
0011 1111 1111 to 0000 0000 0000 = Reserved