GENERAL DESCRIPTION The SAA8116 is a highly integrated third generation USB PC-camera ICs. It is the successor to the SAA8112HL and SAA8115HL. It processes the digitized sensor data and converts it to a high quality, compressed YUV signal. Together with the audio signal, this video signal is then properly formatted in USB packets. FEATURES • Embedded microcontroller (80C51 core based) for control loops Auto Optical Black (AOB), Auto White Balance (AWB), Auto Exposure (AE) and USB interface control • Compliant for VGA CCD and VGA CMOS sensors (RGB Bayer) • USB 1.1 compliant bus-powered USB device with integrated power management and POR circuit • RGB processing • Optical black processing • Defect pixel concealment • Programmable colour matrix • RGB to YUV transform • Programmable gamma correction (including knee) • Programmable edge enhancement • Video formatter with SIF/QSIF downscaler • Compression engine • Flexible Measurement Engine (ME) with up to eight measurements per frame • Internal Pulse Pattern Generator (PPG) for wide range of VGA CCDs (Sony, Sharp and Panasonic) and frame rate selection • Programmable H and V timing for the support of CMOS sensors • Programmable output pulse for switched mode power supply of the sensor • 3-wire interface to control an external pre-processor IC, such as the TDA8787A: Correlated Double Sampling (CDS), Automatic Gain Control (AGC) and 10-bit ADC • Analog microphone/audio input to USB: Low DropOut (LDO) supply filter, microphone supply, low noise amplifier, programmable amplifier, PLL and ADC • Integrated analog USB driver (ATX) • Integrated main oscillator, including a clock PLL, which derives 48 MHz main system clock from a 12 or 48 MHz fundamental crystal. APPLICATION • USB PC-camera (video and audio).
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