Datasheet

ADV7189B
Rev. B | Page 36 of 104
CCMN[2:0] Chroma Comb Mode NTSC, Address 0x38[5:3]
Table 46. CCMN Function
CCMN[2:0] Description Configuration
Adaptive 3-line chroma comb for CTAPSN = 01.
Adaptive 4-line chroma comb for CTAPSN = 10.
0xx (default) Adaptive comb mode.
Adaptive 5-line chroma comb for CTAPSN = 11.
100 Disable chroma comb.
Fixed 2-line chroma comb for CTAPSN = 01.
Fixed 3-line chroma comb for CTAPSN = 10.
101 Fixed chroma comb (top lines of line memory).
Fixed 4-line chroma comb for CTAPSN = 11.
Fixed 3-line chroma comb for CTAPSN = 01.
Fixed 4-line chroma comb for CTAPSN = 10.
110 Fixed chroma comb (all lines of line memory).
Fixed 5-line chroma comb for CTAPSN = 11.
Fixed 2-line chroma comb for CTAPSN = 01.
Fixed 3-line chroma comb for CTAPSN = 10.
111 Fixed chroma comb (bottom lines of line memory).
Fixed 4-line chroma comb for CTAPSN = 11.
YCMN[2:0] Luma Comb Mode NTSC, Address 0x38[2:0]
Table 47.YCMN Function
YCMN[2:0] Description Configuration
0xx (default) Adaptive comb mode. Adaptive 3-line (3 taps) luma comb.
100 Disable luma comb. Use low-pass/notch filter; see the 195HY-Shaping Filter section.
101 Fixed luma comb (top lines of line memory). Fixed 2-line (2 taps) luma comb.
110 Fixed luma comb (all lines of line memory). Fixed 3-line (3 taps) luma comb.
111 Fixed luma comb (bottom lines of line memory). Fixed 2-line (2 taps) luma comb.
PAL Comb Filter Settings
Used for PAL-B/G/H/I/D, PAL-M, PAL-Combinational N, PAL-
60, and NTSC443 CVBS inputs.
PSFSEL[1:0] Split Filter Selection PAL, Address 0x19[1:0]
The PSFSEL[1:0] control selects how much of the overall signal
bandwidth is fed to the combs. A wide split filter selection
eliminates dot crawl, but shows imperfections on diagonal lines.
The opposite is true for selecting a narrow bandwidth split filter.
Table 48. PSFSEL Function
PSFSEL[1:0] Description
00 Narrow
01 (default) Medium
10 Wide
11 Widest