Datasheet

TVP5146M2
SLES141H –JULY 2005– REVISED FEBRUARY 2012 www.ti.com
Table 2-67. AFE Fine Gain for Pb_B 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 B/Pb.
Fine Gain = (1/2048) × FGAIN 1, where 0 ≤ FGAIN 1 ≤ 4095
This register is only updated when the MSB (register 4Bh) is written to.
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
Table 2-68. AFE Fine Gain for Y_G_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/G channel or S-video chroma.
Fine_Gain = (1/2048) × FGAIN 2, where 0 ≤ FGAIN 2 ≤ 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
Table 2-69. AFE Fine Gain for Pr_R 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 Pb/B.
Fine_Gain = (1/2048) × FGAIN 3, where 0 ≤ FGAIN 3 ≤ 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
66 Functional Description Copyright © 2005–2012, Texas Instruments Incorporated
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