Analog Devices ADV7181B Manual page 73

Subaddress Register Bit Description
0x03 Output SD_DUP_AV. Duplicates the AV
Control codes from the Luma into the
chroma path.
Reserved.
OF_SEL[3:0]. Allows the user to
choose from a set of output formats.
TOD. Three-state output drivers.
This bit allows the user to three-
state the output drivers: P[19:0], HS,
VS, FIELD, and SFL.
VBI_EN. Allows VBI data (Lines 1 to
21) to be passed through with only
a minimum amount of filtering
performed.
0x04 Extended RANGE. Allows the user to select the
Output range of output values. Can be
Control BT656-compliant, or can fill the
whole accessible number range.
EN_SFL_PIN.
BL_C_VBI. Blank chroma during VBI.
If set, enables data in the VBI region
to be passed through the decoder
undistorted.
TIM_OE. Timing signals output
enable.
Reserved.
Reserved.
BT656-4. Allows the user to select an
output mode compatible with
ITU- R BT656-3/4.
Bits
7 6 5 4 3 2 1
0
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
0
1
0
1
0
1
0
1
0
1
x x
1
0
1
Rev. B | Page 73 of 100
0 Comments
0 AV codes to suit 8-bit
interleaved data output
1 AV codes duplicated (for
16-bit interfaces)
Set as default
Reserved
Reserved
16-bit @ LLC1 4:2:2
8-bit @ LLC1 4:2:2
ITU-R BT.656
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Output pins enabled
Drivers three-stated
All lines filtered and scaled
Only active video region
filtered
0 16 < Y < 235, 16 < C < 240
1 1 < Y < 254, 1 < C < 254
SFL output is disabled
SFL information output on
the SFL pin
Decode and output color
Blank Cr and Cb
HS, VS, F three-stated
HS, VS, F forced active
BT656-3-compatible
BT656-4-compatible
ADV7181B
Notes
See TIM_OE,
Address 0x04[3] and
TRI_LLC, Address
0x1D[7]
ITU-R BT.656.
Extended range.
SFL output enables
encoder and
decoder to be
connected directly.
During VBI.
Controlled by TOD.