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TMC22091 Datasheet, PDF (1/60 Pages) Fairchild Semiconductor – Digital Video Encoders/Layering Engine | |||
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www.fairchildsemi.com
TMC22091/TMC22191
Digital Video Encoders/Layering Engine
Features
⢠All-digital video encoding
⢠Internal digital oscillators, no crystals required
⢠Multiple input formats supported
â 24-bit and 15-bit GBR/RGB
â YCBCR422 or 444
â 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
8
CVBS7-0
GHSYNC
GVSYNC
RESET 8
D7-0
2
A1-0
CS
R/W
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 75⦠load.
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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