TMC22191 CADEKA [Cadeka Microcircuits LLC.], TMC22191 Datasheet - Page 17

• Manufacturer Part Number: TMC22191
• Description: Digital Video Encoders/Layering Engine
• Manufacturer: CADEKA [Cadeka Microcircuits LLC.]

PRODUCT SPECIFICATION
Control Register Definitions
Key Control Register (04)
Reg
04
04
04
04
04
04
04
04
Reserved
7
Bit
7
6
5
4
3
2
1
0
Name
HKEN
BUKEN
SKEXT
DKDIS
EKDIS
FKDIS
SKEN
HKEN
6
BUKEN
Function
Reserved.
Hardware key enable. When LOW, the KEY input pin ignored. When HIGH, the
KEY input pin is enabled.
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).
Blue/green/C
enabled for data keying. When HIGH, Blue/green/C
data keying. This function is enabled when Layering Control Register is
enabled (TMC22191).
Red/blue/C
for data keying. When HIGH, red/blue/C
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.
5
(continued)
R
SKEXT
B
data key disable. When LOW, red/blue/C
data key disable. When LOW, Blue/green/C
4
DKDIS
3
R
EKDIS
input data is ignored for data keying.
2
B
input data is ignored for
R
FKDIS
input data is enabled
1
B
input data is
TMC22091/TMC22191
SKEN
0
17