■ Overview

The MN673273 is a signal processing LSI for digital cameras inputting to computer. In addition to the basic functions of luminance signal and chrominance signal processing, the MN673273 integrates microcontroller functions (ALC, AWB, and AGC), SSG, and CG on a single chip.

■ Features

• Input: Analog signal (A/D converter input)

• Outputs: Digital outputs

8-bit Y signal

8-bit C signal

Analog outputs

Y signal

C signal

• Operating supply voltage: 3.3 V ±0.3 V

• Operating clock frequency: 9.5 to 20 MHz

• Main functions

— 10-bit A/D converter

— Two-channel 8-bit D/A converter

— Analog Y and C outputs

— Digital Y and C outputs

— ALC (supports both electronic and mechanical iris), AWB, AGC. Can be used with either a hardware control system or a microcontroller based control system.

— 50 Hz fluorescent lamp flicker correction

— Supports analog AGC (AN2108)

— On-chip CG and SSG

— Supports both 510 and 360 horizontal lines (However, 360 horizontal line output is only provided for the digital outputs.)

— Supports pseudo-VGA (digital rate conversion)

— Supports both NTSC and PAL

■ Applications

• PC cameras, multimedia cameras