PRODUCT SPECIFICATION
TMC22091/TMC22191
Control Register Definitions (continued)
Key Control Register (04)
7
6
5
4
3
2
1
0
Reserved
HKEN
BUKEN
SKEXT
DKDIS
EKDIS
FKDIS
SKEN
Reg
Bit
Name
Function
04
04
7
6
Reserved.
HKEN
Hardware key enable. When LOW, the KEY input pin ignored. When HIGH, the
KEY input pin is enabled.
04
04
04
5
4
3
BUKEN
SKEXT
DKDIS
Burst key enable. When LOW, output video burst is generated on TMC22x91.
When HIGH, output burst is taken from genlock input data.
Data key operation select. When LOW, data keying is allowed only during
active video. When HIGH, keying is allowed during active video and blanking.
Green/red/Y data key disable. When LOW, green/red/Y input data is enabled
for data keying. When HIGH, green/red/Y input data is ignored for data keying.
This function is enabled when Layering Control Register is enabled
(TMC22191).
04
04
04
2
1
0
EKDIS
FKDIS
SKEN
Blue/green/C data key disable. When LOW, Blue/green/C input data is
B B
enabled for data keying. When HIGH, Blue/green/C input data is ignored for
B
data keying. This function is enabled when Layering Control Register is
enabled (TMC22191).
Red/blue/C data key disable. When LOW, red/blue/C input data is enabled
R
R
for data keying. When HIGH, red/blue/C input data is ignored for data keying.
R
This function is enabled when Layering Control Register is enabled
(TMC22191).
Data key enable. When LOW, data keying is disabled. When HIGH, data keying
is enabled.
17
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