ADV7180
Bits (Shading Indicates Default
State)
Comments
LQFP-64 LFCSP-40
No delay
Subaddress Register
Bit Description
Notes
7
6
5
4
3
2
1
0
0x27
Pixel Delay Control
LTA[1:0]. Luma timing
adjust allows the user
to specify a timing
difference between
chroma and luma
samples.
0
0
CVBS mode LTA[1:0] = 00b,
S-video mode LTA[1:0] = 01b,
YPrPb mode LTA[1:0] = 01b
1
1
0
0
Luma 1 clock (37 ns) late
Luma 2 clock (74 ns) early
1
1
Luma 1 clock (37 ns) early
Reserved.
0
Set to 0
CTA[2:0]. Chroma
timing adjust allows
a specified timing
difference between
the luma and chroma
samples.
0
0
0
Not valid setting
CVBS mode CTA[2:0] = 011b,
S-Video mode CTA[2:0] = 101b,
YPrPb mode CTA[2:0] = 110b
0
0
0
1
1
1
1
0
1
1
0
0
1
1
1
0
1
0
1
0
1
Chroma + 2 pixels (early)
Chroma + 1 pixel (early)
No delay
Chroma − 1 pixel (late)
Chroma − 2 pixels (late)
Chroma − 3 pixels (late)
Not valid setting
AUTO_PDC_EN.
Automatically
0
1
Use values in LTA[1:0] and
CTA[2:0] for delaying
luma/chroma
programs the LTA/CTA
values so that luma
and chroma are
aligned at the output
for all modes of
operation.
LTA and CTA values
determined automatically
SWPC. Allows the Cr
and Cb samples to be
swapped.
0
1
No swapping
See Swap_CR_CB_WB,
Addr 0x89
Swap the Cr and Cb O/P
samples
0x2B
Misc Gain Control
PW_UPD. Peak white
update determines the
rate of gain.
0
1
Update once per video line
Update once per field
Peak white must be
enabled; see LAGC[2:0]
Reserved.
1
0
0
0
0
Set to default
CKE. Color kill enable
allows the color kill
function to be
0
1
Color kill disabled
Color kill enabled
For SECAM color kill,
threshold is set at 8%;
see CKILLTHR[2:0]
switched on and off.
Reserved.
1
Set to default
0x2C
AGC Mode Control
CAGC[1:0]. Chroma
0
0
1
1
0
1
0
1
Manual fixed gain
Use luma gain for chroma
Automatic gain
Freeze chroma gain
Set to 1
Use CMG[11:0]
automatic gain control
selects the basic mode
of operation for the
AGC in the chroma path.
Based on color burst
Reserved.
1
1
LAGC[2:0]. Luma
automatic gain control
selects the mode of
operation for the gain
control in the luma
path.
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Manual fixed gain
Reserved
Use LMG[11:0]
Peak white algorithm on
Reserved
Blank level to sync tip
Blank level to sync tip
Peak white algorithm off
Reserved
Reserved
Freeze gain
Reserved.
1
Set to 1
Rev. A | Page 86 of 112
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