Datasheet

TVP5147M1
www.ti.com SLES140G –JULY 2005–REVISED FEBRUARY 2012
Table 2-69. Back-End AGC Control Register
Subaddress 6Ch
Default 08h
7 6 5 4 3 2 1 0
Reserved 1 Peak Color Sync
This register disables the back-end AGC when the front-end AGC uses specific amplitude references (sync-height, color burst, or
composite peak) to decrement the front-end gain. For example, writing 0x09 to this register disables the back-end AGC whenever the front-
end AGC uses the sync-height to decrement the front-end gain.
Peak:
Disables back-end AGC when the front-end AGC uses the composite peak as an amplitude reference.
0 = Disabled (default)
1 = Enabled
Color:
Disables back-end AGC when the front-end AGC uses the color burst as an amplitude reference.
0 = Disabled (default)
1 = Enabled
Sync:
Disables back-end AGC when the front-end AGC uses the sync height as an amplitude reference.
0 = Disabled (default)
1 = Enabled
Table 2-70. AGC Decrement Speed Register
Subaddress 6Fh
Default 04h
7 6 5 4 3 2 1 0
Reserved AGC decrement speed [2:0]
AGC decrement speed:
Adjusts gain decrement speed. Only used for composite/luma peaks.
111 = 7 (slowest)
110 = 6 (default)
⋮
000 = 0 (fastest)
Table 2-71. ROM Version Register
Subaddress 70h
Read only
7 6 5 4 3 2 1 0
ROM version [7:0]
ROM Version [7:0]:
ROM revision number
Table 2-72. RAM Version MSB Register
Subaddress 71h
Read only
7 6 5 4 3 2 1 0
RAM version MSB [7:0]
RAM version MSB [7:0]:
This register identifies the MSB of the RAM code revision number.
Copyright © 2005–2012, Texas Instruments Incorporated Functional Description 67
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