參數(shù)資料
型號(hào)： TMC22191
廠商： Fairchild Semiconductor Corporation
英文描述： Digital Video Encoders(數(shù)字視頻編碼器)
中文描述： 數(shù)字視頻編碼器（數(shù)字視頻編碼器）
文件頁(yè)數(shù)： 17/60頁(yè)
文件大小： 293K
代理商： TMC22191
PRODUCT SPECIFICATION
TMC22091/TMC22191
17
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
04
04
Bit
7
6
Name
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
B
data key disable. When LOW, Blue/green/C
B
input data is
enabled for data keying. When HIGH, Blue/green/C
B
input data is ignored for
data keying. This function is enabled when Layering Control Register is
enabled (TMC22191).
Red/blue/C
R
data key disable. When LOW, red/blue/C
R
input data is enabled
for data keying. When HIGH, red/blue/C
R
input data is ignored for data keying.
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.
HKEN
04
5
BUKEN
04
4
SKEXT
04
3
DKDIS
04
2
EKDIS
04
1
FKDIS
04
0
SKEN
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