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What is TMC22191?

This electronic component, produced by the manufacturer "Fairchild Semiconductor", performs the same function as "Digital Video Encoders/Layering Engine".


TMC22191 Datasheet PDF - Fairchild Semiconductor

Part Number TMC22191
Description Digital Video Encoders/Layering Engine
Manufacturers Fairchild Semiconductor 
Logo Fairchild Semiconductor Logo 


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TMC22091/TMC22191
Digital Video Encoders/Layering Engine
Features
• All-digital video encoding
• Internal digital oscillators, no crystals required
• Multiple input formats supported
– 24-bit and 15-bit GBR/RGB
– YCBCR422 or 444
– Color indexed
• 30 overlay colors (TMC22191)
• Fully programmable timing
• Supports input pixel rates of 10 to 15 Mpps
• 256 x 8 x 3 color look-up tables (bypassable on
TMC22191)
• 8-bit mask register
• 8-bit composite digital video input
• Hardware and 24-bit data keying
• Synchronizes with TMC22071 Genlocking Video
Digitizer
• 8:8:8 video reconstruction
• SMPTE 170M NTSC or CCIR Report 624 PAL
compatible
• Supports PAL-M and NTSC without pedestal
• Simultaneous S-VIDEO (Y/C) NTSC/PAL output
• 10-bit D/A conversion (three channels)
Logic Symbol
BYPASS and OL4:0 on TMC22191 only.
24
PD23-0
6
OL4-0
PDC
VHSYNC
VVSYNC
KEY
BYPASS
CVBS7-0
GHSYNC
GVSYNC
8
RESET
D7-0
A1-0
CS
R/W
8
2
TMC22x91
DIGITAL
VIDEO
ENCODER
CHROMA
LUNA
COMPOSITE
VREF
COMP
RREF
TDI
TMS
TCK
TDO
LDV
PXCK
27008A
• Controlled edge rates
• 3 power-down modes
• Built-in color bars and modulated ramp test signals
• JTAG (IEEE Std 1149.1-1990) test interface
• Single +5V power supply
• 84 lead PLCC package
• 100 lead MQFP package
Description
The TMC22x91 digital video encoders convert digital com-
puter image or graphics data (in RGB, YCBCR, or color
indexed format) or a CCIR-601 signal into a standard analog
baseband television (NTSC or PAL) signal with a modulated
color subcarrier.
Both composite (single lead) and S-VIDEO (separate
chroma and luma) formats are active simultaneously at the
three analog output pins, each of which generates a standard
video-level signal into doubly-terminated 75load.
The TMC22x91 accepts digitized video from the companion
TMC22071 Genlocking Video Digitizer. Soft switching
between video sources is done under either hardware or
programmable data control.
The TMC22191 offers 4-layer keying capability, bypassable
CLUT, and 30 Overlay colors.
The TMC22x91 is fabricated in a submicron CMOS process
and packaged in an 84 Lead Plastic Leadless Chip Carrier, or
in a 100 Lead Metric Quad Flat Pack. Performance is guar-
anteed from 0°C to 70°C.
Rev. 1.1.0

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TMC22191 equivalent
PRODUCT SPECIFICATION
TMC22091/TMC22191
Microprocessor Interface
The microprocessor interface employs a 13 line format. The
RESET pin sets all internal state machines to their initialized
conditions, disables the analog outputs, sets the internal
SRESET bit LOW (reset condition), and places the encoder
in a power-down mode. All register and CLUT data are
maintained in power-down mode. If the HRESET bit is set
HIGH, line 1 field 1 is started when RESET goes HIGH, and
SRESET is ignored. If HRESET is LOW, the encoder
remains idle after RESET goes HIGH until Control Register
bit SRESET is set HIGH, which initiates line 1 field 1.
Two address lines are provided and decoded for access to the
internal Control Registers and CLUT. Control Registers and
CLUT are accessed by loading a desired address through the
8-bit D7-0 port, followed by the desired data read or write for
that address. Both the CLUT and the Control Registers are
self-indexing, allowing continuous reads or writes to succes-
sive addresses.
JTAG Test Interface
The TMC22x91 includes a standard 4-line JTAG (IEEE Std
1149.1-1990) test interface port, providing access to all digi-
tal input/output data pins. This is provided to facilitate com-
ponent and board-level testing.
Test/Validation Mode
The TMC22x91 may be configured to produce standard
color bars or a 40 IRE modulated (or unmodulated) video
ramp, independent of any pixel or video data input. Color
bars are useful as an idle system output signal. The test sig-
nals may be used to verify proper operation of the analog
video signal chain.
TMC22090/TMC22190 Compatibility
The TMC22090 and TMC22190 are earlier versions of the
TMC22091 and TMC22191, respectively. They lack the fol-
lowing features of the newer versions:
1. Selectable Setup (to support NTSC EIA-J video output
for Japan)
2. PAL-M format (for South American applications)
3. Extended EH and SL intervals (to support pixel rates
above 15 Mpps)
4. Individual D/A power-down (to reduce total dissipation
when some outputs are not required)
5. Luminance I/O processing (to reduce flicker in graphics
applications)
These features are controlled by registers 0E and 0F, and
enabled by setting Register OE bit 7 to ONE. If an applica-
tion of the TMC22x90 is programmed with this bit set to
ZERO (as recommended in the product documentation) then
the corresponding TMC22x91 will perform identically.
Though the earlier parts continue to be available, it is recom-
mended that the newer devices be used in new designs for
the additional flexibility. Older designs may be readily
converted to the newer versions to take advantage of the
added features and lower cost of the later technology.
5


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Part Details

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Featured Datasheets

Part NumberDescriptionMFRS
TMC22191The function is Digital Video Encoders/Layering Engine. Fairchild SemiconductorFairchild Semiconductor

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