AX3231 - 32-bit Video MCU

AX3231 is a highly integrated single-chip digital video microcontroller with a high-performance 32-bit RISC MCU and a dedicated image processor. It supports video input from CMOS image sensors with resolution up to 1.3M pixels. The image processor contains a JPEG and Motion JPEG encoder/decoder for handling still images or video. Audio is received by a microphone interface and converted by an internal ADC with digital AGC. The encoded video and audio are stored to an external non-volatile memory such as an SD card for video recording. The captured image or video can be displayed on an LCD by the integrated LCD controller and passed together with audio to a PC through a USB 2.0 interface supporting UVC and UAC device class definitions. The audio can be played back to headphones or speakers from the on-chip DAC.

The image/video captured from CMOS sensor is optimized by the image signal processing features of the AX3231 such as auto exposure, white balance, defect pixel detection and cancellation: configurable noise reduction, image sharpness enhancement, color correction, brightness, contrast, color saturation and hue.

AX3231 contains an internal hardware image acceleration engine which provides image manipulation functions like rotation, mirroring, virtual display, picture-in-picture with overlay, zoom in/out.

Rapid application development is supported by a complete development toolkit which includes a GCC compiler and a GDB debugger with on-line debugging through JTAG and USB.

The high integration and performance of this digital video SoC solution enables popular consumer products such as drive recorders, baby monitors, wireless cameras, surveillance cameras, web cameras, and digital video recorders.