TMC22091/TMC22191
PRODUCT SPECIFICATION
Control Register Definitions (continued)
Layering Control Register (04) (TMC22191)
7
6
5
4
3
2
1
0
LAYMODE
HKEN
BUKEN
SKEXT
LAYMODE
SKEN
Reg
Bit
7
Name
Function
04
04
LAYMODE
HKEN
MSB of Layer Assignments select.
6
Hardware key enable. When LOW, the KEY input pin ignored. When HIGH, the
KEY input pin is enabled.
04
04
5
4
BUKEN
SKEXT
Burst key enable. When LOW, output video burst is generated on TMC22191.
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, data keying is allowed during active video and
blanking.
04
04
3-1
0
LAYMODE
SKEN
Three LSBs of Layer Assignments select.
Data key enable. When LOW, data keying is disabled. When HIGH, data keying
is enabled.
Key Value Registers (05-07)
Reg
Bit
Name
Function
05
7-0
DKEY
Green/red/Y data key value. Eight bits hold the match value which triggers
keying on red/Y.
06
07
7-0
7-0
EKEY
FKEY
Blue/green/U data key value. Eight bits hold the match value which triggers
keying on green/U.
Red/blue/V key value. Eight bits hold the match value which triggers keying on
blue/V.
18
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