描述 Description

The SN9C271A is a USB 2.0 High-Speed (HS) compatible PC camera controller. The lowpower design provides extreme low consumption on device standby, operation and evenhigh performance state. The low thermal design gets the module operating temperatureinside platform under reasonable range. The SN9C271A is fully compliant with USB VideoClass. The OS systems supported are including Windows XP, Windows Vista, Windows 7and the coming Windows 8.The new generation image signal processing engine brings sight video experience.The high performance Motion-JPEG compression engine makes variant compression ratioto consider bandwidth requirement well which output MJPG data format. It is also ahigh performance and high speed transmission engine on YUV un-compression data format.With the integrated sensor interface and color processing engine, it can supportsmost available CMOS sensors that range from VGA to QXGA. It is controlled by the embeddedmicro-controller and the statistics for 3A (AE / AWB / AF) are built-in.To decrease the BOM cost and PCB area, the SN9C271A integrates 2 voltage regulatorsfor sensor power. One is for analog part and the other is for I/O power. Furthermore,the built-in Clock Synthesizer for performance and power saving makes an externalcrystal is not needed.

特性 Features

? 3.3V, 1.2V power supply are necessary (Core power 1.2V provide by Backend IC )
? Extreme low power consumption, < 30mA when standby and < 0.5mA when suspend (Power consumption of sensor is not included)
? Built-in Clock Synthesizer for performance and power saving
? Using external serial flash to store customized code and data
? 1.8V output power source to supply CMOS sensor’s I/O power
? QFN package of 32-pins
? 2.8V output power source to supply CMOS sensor’s analog power(2.7V~3.3V control by FW setting)
? No external RAM needed
? Built-in PLL for internal clock generation