
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
1
Copyright
Cirrus Logic, Inc. 1998
(All Rights Reserved)
Cirrus Logic, Inc.
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.crystal.com
CS7654
CCD Color-Space Processor with Analog Output
Features
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ITU-601 Compliant Image Formatting
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ITU-656 and SMPTE-125/M Transports
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I
2
C Control Interface
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Limited Secondary I
2
C Bus Master
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Automatic White Balance
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Programmable Gamma Correction
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Programmable Interpolation
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Programmable Luma Gain and Saturation
Control
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Fully Programmable Color Separation Matrix
Coefficients
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Supports up to 1440, active pixels per line,
with no limitation on Vertical Size
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Programmable "Chroma Kill" circuit
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Highly integrated for low part count cameras
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Three DACs providing simultaneous composite,
S-video outputs
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Multi-standard support for NTSC-M, NTSC-
JAPAN, PAL (B, D, G, H, I, M, N, Combination N)
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On-chip voltage reference generator modes, tri-
state DACs and power down mode.
Description
The CS7654 is a low-power Digital Color-Space Proces-
sor for CCD cameras. It provides all the necessary digital
image processing for standard four-color interline trans-
fer CCD imagers. The CS7654 processes the magenta,
yellow, cyan, and green (MYCG) CCD imager data into
YCrCb formatted component digital video and into ana-
log PAL or NTSC. Internal processing includes color
separation, automatic white balance, user programma-
ble
gamma
correction,
(interpolation), digital output formatting and encoding
function for analog output. Also, a special "Chroma Kill"
circuit eliminates false colors during saturation. Video
output can be formatted to be compatible with NTSC-M,
NTSC-J, PAL-B,D,G,H,I,M,N, and Combination N sys-
tems. Closed Caption is supported in NTSC. Three 10-
bit DACs provide two channels for an S-Video output
port and one composite video outputs.A High-speed I
2
C
compatible control interface is provided for in system design.
A general purpose I/O port is also available to help con-
serve valuable board space and to provide up to eight
“boot” configurations.The CS7654 is designed to work
directly with the CS7615 CCD Imager Analog Processor.
programmable
scaling
ORDERING INFORMATION
CS7654-KQ
(10 mm x 10 mm x 1.4 mm)
I
0° to 70° C
64-pin TQFP
DEFORMATTER
COLOR
SEPARATION
AND
WHITE
BALANCE
AWB
CONTROL
GAMMA
CORRECTION
SCALER
OUTPUT
FORMATTER
I
2
C INTERFACE
REGISTER
BLOCK
PLL AND
CLOCK
DRIVER
EXTERNAL
TIMING
CHROMA
VREF/
VSYNC
HREF/
HSYNC
XTAL
PRIMARY
I
C BUS
SECONDARY
I
C BUS
CCD
MOSAIC
DATA
ANITALIASING
VIDEO
FORMATTER
INTERPOLATION
AND FILTER
INTERPOLATION
AND DELAY
CHROMA
LUMA
10-BIT
DAC
COMPOSITE
10-BIT
DAC
LUMA
10-BIT
DAC
Σ
MAY ‘99
DS330PP2