TMC2272A Datasheet, PDF (1/20 Pages) Fairchild Semiconductor – Digital Colorspace Converter 36 Bit Color, 50 MHz

TMC2272A
Digital Colorspace Converter
36 Bit Color, 50 MHz
www.fairchildsemi.com
Features
• 50 MHz (20ns) pipelined throughput
• 3 Simultaneous 12-bit input and output channels
(64 Giga {236} colors)
• Two's complement inputs and outputs
• Overflow headroom available in lower resolution
• 10-bit user-defined coefficients
• TTL compatible input and output signals
• Full precision internal calculation
• Output rounding
• On-board coefficient memory
• Submicron CMOS process
Applications
• Translation between component color standards (RGB,
YIQ, YUV, etc.)
• Broadcast composite color encoding and decoding (all
standards)
• Broadcast composite color standards conversion and
transcoding
• Camera tube and monitor phosphor colorimetry
correction
• White balancing and color-temperature conversion
• Image capture, processing and storage
• Color matching between systems, cameras and monitors
• Three-dimensional perspective translation
Description
A 50-MHz, three-channel, 36 bit (three 12-bit components)
colorspace converter and color corrector, the TMC2272A
uses 9 parallel multipliers to process high-resolution imagery
in real time.
The TMC2272A also operates at any slower clock rate and
with any smaller data path width, allowing it to handle all
broadcast and consumer camera, frame-grabber, encoder/
decoder, recorder and monitor applications as well as most
electronic imaging applications.
A complete set of three 12-bit samples is processed on every
clock cycle, with a five-cycle pipeline latency. Full 23-bit
(for each of three components) internal precision is provided
with 10-bit user-defined coefficients. The coefficients may be
varied dynamically, with three new coefficients loaded every
clock cycle. (The full set of nine can be replaced in three clock
cycles.) Rounding to 12 bits per component is performed only
at the final output. This allows full accuracy with correct
rounding and overflow headroom for applications that require
less than 12 bits per component.
The TMC2272A is fabricated in a submicron CMOS process
and performance is guaranteed over the full operating tem-
perature range. It is available in a 120-pin Plastic Pin Grid
Array (PPGA) package, 120-pin Ceramic Pin Grid Array
(CPGA), 120-pin MQFP to PGA package, and 120-pin
Plastic Quad FlatPack (PQFP) in three speed grades.
Logic Symbol
CLK
A_11-0
B_11-0
C_11-0
KA_11-0
KB_11-0
KC_11-0
CSEL_1-0
TMC2272A
Colorspace Converter
X_11-0
Y_11-0
Z_11-0
REV. 1.1.3 10/25/00