SN9C291B数据手册Sonix中文资料规格书

描述 Description

SN9C291B is a USB 2.0 High-Speed (HS) compatible PC Camera controller. The superiorimage signal processing engine brings sight video experience. The high performanceMotion-JPEG / h.264 compression engine makes variant compression ratio to satisfybandwidth requirement. SN9C291B is compliant with USB Video Class and Audio Class.With the integrated sensor interface and color processing engine, it can support mostavailable CMOS sensors that range from VGA to 2MP. SN9C291B is controlled by the embeddedmicro-controller, and the statistics for 3A (AE / AWB / AF) are built-in. The flexiblearchitecture is consisted of mask ROM, internal RAM and external serial-flash whichcan store the customized codes and parameters. With the highly-integrated firmwarearchitecture and the developing kit provided by SONiX, it’s easy for 3rd party tofulfill customized features.

特性 Features

• 3.3V(analog, I/O), 2.5V(DDR) & 1.2V(core) external power supply are necessary
• Low power consumption of suspend, standby & preview mode
• Input oscillator frequency is 12MHz
• Using external serial flash to store customized code and data(default 128KBytes)
• support Multi Stream up to 4 Streams at same time (MJPG support up to 2 Streams and H.264 support up to 2 Streams)
• High Quality H.264 Encoder, Main Profile Level:4.1, support up to 720p(HD)
• Built-in PLL for internal clock generation