Description
CH9225 is an USB 2.0 HS/FS and UVC compliant camera controller,
The built-in extreme low-power transceiver provides the superior compatibility with USB host and the best quality for image applications.
— USB 2.0 Controller
CH9225 integrates USB 2.0 transceiver that is optimized for high performance data transfer rate, high speed MCU and DC-to-DC regulators, sensor controller, color processing and noise reduction into a single chip
— Image Signal Processing Unit
UVC defined image processing functions are supported by using sensor’s ISP engine. CH9220 supports Gamma/Hue/Saturation/Contrast/Brightness engines processing functions. These functions are very useful to compensate intrinsic inaccuracy in lens and image sensor to get better image quality.
— Image Sensor Interface
CH9225 have MIPI one lane for video transfer/control with target CMOS image sensor. It can support most available CMOS sensors from VGA (640x480) to 2M (1920x1080) resolution.
— Built-in Regulator
CH9225 integrates 4 regulators to save BOM cost and PCB area. One regulator is designed to convert 3.3V to 2.8V for sensor pixel power. One regulator is designed to convert 3.3V to 1.8V/2.8V for sensor I/O power. One regulator is designed to convert 3.3V to 1.2V for core power, the other one regulator is designed to convert 3.3V to 2.8V/1.8V I/O power.
— Wide range system clock output
CH9225 can be programmable system clock output for performance and power saving. Additional clock output with various clock speed ranged up to 96MHz is provided for video capture module.
USB2.0、2M(FHD)、ISP、MJPG、QFN32(2.4*5mm)
General System Features
— USB2.0 PC Camera Controller
— USB video class compliant, works with native driver in Microsoft Windows system
— Supports external serial FLASH interface for sensor setting and ISP tuning functions
— Supports external serial FLASH interface for configuring customized parameters
— Upgrade partial firmware and customized parameters through USB interface
— Support MIPI one lane up to 1000MHz
— Embedded image signal process
— Embedded JPEG encoder
— Built-in 3.3V to 2.8V regulator for sensor analog power
— Built-in 3.3V to 1.8V/2.8V adjustable regulator for sensor IO power
— Built-in 3.3V to 1.2V regulator for core power
— Built-in 3.3V to 1.8V/2.8V regulator for I/O power
— Adjustable and dynamic frame rate control on USB transaction
— Automatic frame rate adjustment when exposure in low light environment
— Supports 6 general purpose I/O pins with programmable driving strength
— Purpose I/O for LED indicator on video streaming
— Package is QFN-32 (2.4x5mm)
