TMC22091 datasheet(17/60 Pages) CADEKA

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PRODUCT SPECIFICATION

TMC22091/TMC22191

Control Register Deﬁnitions (continued)

Key Control Register (04)

Reserved

HKEN

BUKEN

SKEXT

DKDIS

EKDIS

FKDIS

SKEN

Reg

Bit

Name

Function

Reserved.

HKEN

Hardware key enable. When LOW, the KEY input pin ignored. When HIGH, the

KEY input pin is enabled.

BUKEN

Burst key enable. When LOW, output video burst is generated on TMC22x91.

When HIGH, output burst is taken from genlock input data.

SKEXT

Data key operation select. When LOW, data keying is allowed only during

active video. When HIGH, keying is allowed during active video and blanking.

DKDIS

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).

EKDIS

Blue/green/CB data key disable. When LOW, Blue/green/CB input data is

enabled for data keying. When HIGH, Blue/green/CB input data is ignored for

data keying. This function is enabled when Layering Control Register is

enabled (TMC22191).

FKDIS

Red/blue/CR data key disable. When LOW, red/blue/CR input data is enabled

for data keying. When HIGH, red/blue/CR input data is ignored for data keying.

This function is enabled when Layering Control Register is enabled

(TMC22191).

SKEN

Data key enable. When LOW, data keying is disabled. When HIGH, data keying

is enabled.

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