TMC22191 CADEKA [Cadeka Microcircuits LLC.], TMC22191 Datasheet - Page 14
TMC22191
Manufacturer Part Number
TMC22191
Description
Digital Video Encoders/Layering Engine
Manufacturer
CADEKA [Cadeka Microcircuits LLC.]
Datasheet
1.TMC22191.pdf
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TMC22091/TMC22191
Control Register Definitions
Format Control Register (01)
14
Reg
01
01
01
01
01
01
Reserved
7
Bit
7
6
5
4
3-2
1-0
Name
LCREN
RAMPEN
CB
FORMAT
INMODE
LCREN
6
RAMPEN
Function
Reserved.
(TMC22191) Layering Control Register enable. When LOW, the Layering
Control Register is not available and Key Control Register functions are
enabled. In this mode, the TMC22191 functions like the TMC22091. When
HIGH, the Layering Control Register takes the place of the Key Control
Register and enables the layering functions. Data loaded into the Key or
Layering Control Registers will remain but have a different meaning if this bit is
changed.
Modulated ramp test. When LOW (normal), the TMC22x91 encodes and
outputs video corresponding to input data. When RAMPEN and CB are both
HIGH, an internally generated 40 IRE modulated ramp is produced, preempting
input data.
Color bar test. When HIGH (normal), the TMC22x91 encodes and outputs
video corresponding to input data. When CB, RAMPEN, and Format Control
Register bit 0 are LOW, internally generated color bars are produced,
preempting input data.
PD
When bits 3 and 2 are:
0 0 the CLUT output is interpreted as RGB and is converted to YC
0 1 is reserved. Bits 3 and 2 must be 00 or 10 when the Layering Control
1 0 the CLUT output is interpreted as GBR, and is converted to YC
1 1 the CLUT output is interpreted as YC
PD
422, 15-bit, or 8-bit input modes.
0 0 24-bit/pixel GBR, RGB, or YC
0 1 YC
1 0 15-bit/pixel GBR or RGB data from PD
1 1 8-bit/pixel color indexed data enters from PD
Bits 1 and 0 must be 00, 01, or 11 when the Layering Control Register is
enabled (TMC22191).
5
23-0
23-0
Register is enabled (TMC22191).
input format select. Two bits select RGB, GBR, or YC
input mode select. These two bits set up the TMC22x91 for either 444,
B
(continued)
C
R
422 data enters from PD
CB
4
3
FORMAT
B
C
23-8
R
444 data enters from PD
; C
B
C
14-0
2
R
R
and C
.
7-0
B
.
alternate from PD
PRODUCT SPECIFICATION
1
B
INMODE
C
23-0
R
input data.
B
B
C
C
R
R
.
15-8
0
.
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