Datasheet

36
SLES084C − August 2007TVP5146
2.11.2 AFE Gain Control Register
Subaddress 01h
Default 0Fh
7 6 5 4 3 2 1 0
Reserved 1 1 AGC chroma AGC luma
Bit 3: 1 must be written to this bit.
Bit 2: 1 must be written to this bit.
AGC chroma: Controls automatic gain in the chroma/B/R/PbPr channel:
0 = Manual (if AGC luma is set to manual, AGC chroma is forced to be in manual)
1 = Enabled auto gain, applies a gain value acquired from the sync channel for S-video and component
mode. When AGC luma is set, this state is valid. (default)
AGC luma: Controls automatic gain in the embedded sync channel of CVBS, S-video,
component video:
0 = Manual gain, AFE coarse and fine gain frozen to the previous gain value set by a AGC when this bit is
set
to 0.
1 = Enabled auto gain applies only to the embedded sync channel (default)
These settings only affect the analog front-end (AFE). The brightness and contrast of
component, CVBS are not affected by these settings.
2.11.3 Video Standard Register
Subaddress 02h
Default 00h
7 6 5 4 3 2 1 0
Reserved Video standard [2:0]
Video standard [2:0]:
CVBS and S-Video Component Video
000 = Autoswitch mode (default) Autoswitch mode (default)
001 = (M, J) NTSC Component 525
010 = (B, D, G, H, I, N) PAL Component 625
011 = (M) PAL Reserved
100 = (Combination-N) PAL Reserved
101 = NTSC 4.43 Reserved
110 = SECAM Reserved
111 = PAL 60 Reserved
NOTE: PAL60 is not included in autoswitch mode.
With the autoswitch code running, the user can force the decoder to operate in a particular video
standard mode by writing the appropriate value into this register. Changing these bits causes the
register settings to be reinitialized.
NOTE: Sampling rate (either square pixel or ITU-R BT.601) can be set by bit 7 (sampling rate) in the output
formatter 1 register at I
2
C subaddress 33h (see Section 2.11.35).