Description

The CS7654 is a low-power Digital Color-Space Processor for CCD cameras. It provides all the necessary digital image processing for standard four-color interline transfer CCD imagers. The CS7654 processes the magenta, yellow, cyan, and green (MYCG) CCD imager data into YCrCb formatted component digital video and into analog PAL or NTSC. Internal processing includes color separation, automatic white balance, user programmable gamma correction, programmable scaling (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 systems. Closed Caption is supported in NTSC. Three 10- it DACs provide two channels for an S-Video output port and one composite video outputs.A High-speed I2C compatible control interface is provided for in system design. A general purpose I/O port is also available to help conserve 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.

Features

• ITU-601 Compliant Image Formatting

• ITU-656 and SMPTE-125/M Transports

• I2C Control Interface

• Limited Secondary I2C Bus Master

• Automatic White Balance

• Programmable Gamma Correction

• Programmable Interpolation

• Programmable Luma Gain and Saturation Control

• Fully Programmable Color Separation Matrix Coefficients

• Supports up to 1440, active pixels per line, with no limitation on Vertical Size

• Programmable "Chroma Kill" circuit

• Highly integrated for low part count cameras

• Three DACs providing simultaneous composite, S-video outputs

• Multi-standard support for NTSC-M, NTSC JAPAN, PAL (B, D, G, H, I, M, N, Combination N)

• On-chip voltage reference generator modes, tristate DACs and power down mode.