ADV7180BCP32Z View Datasheet(PDF) - Analog Devices
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ADV7180BCP32Z Datasheet PDF : 120 Pages
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ADV7180
YCMN[2:0], Luma Comb Mode NTSC, Address 0x38[2:0]
Table 56. YCMN Function
YCMN[2:0] Description
000 (default) Adaptive comb mode
100
Disable luma comb
101
Fixed luma comb (top
lines of line memory)
110
Fixed luma comb (all
lines of line memory)
111
Fixed luma comb
(bottom lines of line
memory)
Configuration
Adaptive three-line
(three taps) luma comb
Use low-pass/notch
filter; see the Y Shaping
Filter section
Fixed two-line (two
taps) luma comb
Fixed three-line (three
taps) luma comb
Fixed two-line (two
taps) luma comb
PAL Comb Filter Settings
These settings are used for PAL B/G/H/I/D, PAL M, PAL
Combinational N, PAL 60, and NTSC 4.43 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 57. PSFSEL Function
PSFSEL[1:0] Description
00
Narrow
01 (default) Medium
10
Wide
11
Widest
CTAPSP[1:0], Chroma Comb Taps PAL, Address 0x39[7:6]
Table 58. CTAPSP Function
CTAPSP[1:0] Description
00
Do not use.
01
PAL chroma comb adapts five lines (three taps)
to three lines (two taps); cancels cross luma only
10
PAL chroma comb adapts five lines (five taps) to
three lines (three taps); cancels cross luma and
hue error less well
11 (default)
PAL chroma comb adapts five lines (five taps) to
four lines (four taps); cancels cross luma and hue
error well
Data Sheet
CCMP[2:0], Chroma Comb Mode PAL, Address 0x39[5:3]
Table 59. CCMP Function
CCMP[2:0] Description
000 (default) Adaptive comb mode
100
Disable chroma comb
101
Fixed chroma comb
(top lines of line
memory)
110
Fixed chroma comb (all
lines of line memory)
111
Fixed chroma comb
(bottom lines of line
memory)
Configuration
Adaptive three-line
chroma comb for
CTAPSN = 01
Adaptive four-line
chroma comb for
CTAPSN = 10
Adaptive five-line
chroma comb for
CTAPSN = 11
Fixed two-line chroma
comb for CTAPSN = 01
Fixed three-line chroma
comb for CTAPSN = 10
Fixed four-line chroma
comb for CTAPSN = 11
Fixed three-line chroma
comb for CTAPSN = 01
Fixed four-line chroma
comb for CTAPSN = 10
Fixed five-line chroma
comb for CTAPSN = 11
Fixed two-line chroma
comb for CTAPSN = 01
Fixed three-line chroma
comb for CTAPSN = 10
Fixed four-line chroma
comb for CTAPSN = 11
YCMP[2:0], Luma Comb Mode PAL, Address 0x39[2:0]
Table 60. YCMP Function
YCMP[2:0] Description
000 (default) Adaptive comb mode
100
Disable luma comb
101
Fixed luma comb (top
lines of line memory)
110
Fixed luma comb (all
lines of line memory)
111
Fixed luma comb
(bottom lines of line
memory)
Configuration
Adaptive five lines (three
taps) luma comb
Use low-pass/notch filter;
see the Y Shaping Filter
section
Fixed three lines (two
taps) luma comb
Fixed five lines (three taps)
luma comb
Fixed three lines (two
taps) luma comb
Rev. G | Page 42 of 120
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