
ADV7180
Data Sheet
Rev. I | Page 92 of 116
Main Map
Bit Description
Bits
(Shading Indicates Default State)
Comments
Notes
Subaddress
Register
7
6
5
4
3
2
1
0
0x37
Polarity
PCLK; sets polarity of LLC
0
Invert polarity
1
Normal polarity as per the timing
diagrams
Reserved
0
Set to 0
PF; sets the FIELD polarity
0
Active high
1
Active low
Reserved
0
Set to 0
PVS; sets the VS polarity
0
Active high
1
Active low
Reserved
0
Set to 0
PHS; sets HS polarity
0
Active low
1
Active high
0x38
NTSC comb
control
YCMN[2:0]; luma comb
mode, NTSC
0
Adaptive three-line, three-tap luma
1
0
Use low-pass notch
1
0
1
Fixed luma comb (two-line)
Top lines of memory
1
0
Fixed luma comb (three-line)
All lines of memory
1
Fixed luma comb (two-line)
Bottom lines of
memory
CCMN[2:0]; chroma
comb mode, NTSC
0
Three-line adaptive for CTAPSN = 01,
Four-line adaptive for CTAPSN = 10,
Five-line adaptive for CTAPSN = 11
1
0
Disable chroma comb
1
0
1
Fixed two-line for CTAPSN = 01,
Fixed three-line for CTAPSN = 10,
Fixed four-line for CTAPSN = 11
Top lines of memory
1
0
Fixed three-line for CTAPSN = 01,
Fixed four-line for CTAPSN = 10,
Fixed five-line for CTAPSN = 11
All lines of memory
1
Fixed two-line for CTAPSN = 01,
Fixed three-line for CTAPSN = 10,
Fixed four-line for CTAPSN = 11
Bottom lines of
memory
CTAPSN[1:0]; chroma
comb taps, NTSC
0
Not used
0
1
Adapts three lines to two lines
1
0
Adapts five lines to three lines
1
Adapts five lines to four lines
0x39
PAL comb
YCMP[2:0]; luma
comb mode, PAL
0
Adaptive five-line, three-tap luma comb
control
1
0
Use low-pass notch
1
0
1
Fixed luma comb (three-line)
Top lines of memory
1
0
Fixed luma comb (five-line)
All lines of memory
1
Fixed luma comb (three-line)
Bottom lines of
memory
CCMP[2:0]; chroma
comb mode, PAL
0
Three-line adaptive for CTAPSN = 01,
Four-line adaptive for CTAPSN = 10,
Five-line adaptive for CTAPSN = 11
1
0
Disable chroma comb
1
0
1
Fixed two-line for CTAPSN = 01
Top lines of memory
Fixed three-line for CTAPSN = 10
Fixed four-line for CTAPSN = 11
1
0
Fixed three-line for CTAPSN = 01
All lines of memory
Fixed four-line for CTAPSN = 10
Fixed five-line for CTAPSN = 11
1
Fixed two-line for CTAPSN = 01
Bottom lines
of memory
Fixed three-line for CTAPSN = 10
Fixed four-line for CTAPSN = 11
CTAPSP[1:0]; chroma
comb taps, PAL
0
Not used
0
1
Adapts five lines to three lines (two taps)
1
0
Adapts five lines to three lines (three taps)
1
Adapts five lines to four lines (four taps)