ADV7181 AD [Analog Devices], ADV7181 Datasheet - Page 82

• Manufacturer Part Number: ADV7181
• Description: Multiformat SDTV Video Decoder
• Manufacturer: AD [Analog Devices]

ADV7181B
Subaddress
0x41
0x48
0x49
0x4A
0x4B
0x4C
0x4D
0x4E
0x50
CTI DNR
Register
Resample
Control
Gemstar
Control 1
Gemstar
Control 2
Gemstar
Control 3
Gemstar
Control 4
Gemstar
Control 5
CTI DNR
Control 1
CTI DNR
Control 2
Control 4
Bit Description
Reserved
SFL_INV. Controls the behavior of
the PAL switch bit.
Reserved
GDECEL[15:8]. See the Comments
column.
GDECEL[7:0]. See above.
GDECOL[15:8]. See the Comments
column.
GDECOL[7:0]. See above.
GDECAD. Controls the manner in
which decoded Gemstar data is
inserted into the horizontal blanking
period.
Reserved
CTI_EN. CTI enable
CTI_AB_EN. Enables the mixing of
the transient improved chroma with
the original signal.
CTI_AB[1:0]. Controls the behavior
of the alpha-blend circuitry.
Reserved
DNR_EN. Enable or bypass the DNR
block.
Reserved
CTI_CTH[7:0]. Specifies how big the
amplitude step must be to be
steepened by the CTI block.
DNR_TH[7:0]. Specifies the
maximum edge that is interpreted
as noise and is therefore blanked.
Rev. 0 | Page 82 of 96
7 6
0
0 0
0 0
0 0
0 0
x x
1 1
0 0
0 0
0
1
5
0
0
0
0
0
x
0
1
0
0
4 3
1 0
0 0
0 0
0 0
0 0
x
0
0
0
Bits
x
0
0
1
1
1
1
2
0
0
0
0
0
x
0
1
0
1
0
0
1
0
0
0
0
0
x
0
1
0
0
0
0
0
0
0
0
0
1
0
1
0
0
Comments
Set to default
SFL compatible with
ADV7190/ADV7191/
ADV7194 encoders
SFL compatible with
ADV717x/ADV7173x
encoders
Set to default
GDECEL[15:0]. 16
individual enable bits that
select the lines of video
(even field Lines 10–25)
that the decoder checks
for Gemstar-compatible
data.
GDECOL[15:0]. 16
individual enable bits that
select the lines of video
(odd field Lines 10–25)
that the decoder checks
for Gemstar-compatible
data.
Split data into half byte
Output in straight 8-bit
format
Undefined
Disable CTI
Enable CTI
Disable CTI alpha blender
Enable CTI alpha blender
Sharpest mixing
Sharp mixing
Smooth
Smoothest
Set to default
Bypass the DNR block
Enable the DNR block
Set to default
Set to 0x04 for A/V input;
set to 0x0A for tuner input
Notes
LSB = Line 10 MSB =
Line 25
Default = Do not
check for Gemstar-
compatible data on
any lines [10–25] in
even fields
LSB = Line 10 MSB =
Line 25
Default = Do not
check for Gemstar-
compatible data on
any lines [10–25] in
odd fields
To avoid 00/FF code.