Designing and Implementation of audio driver based onWindows CE

Combined with the characteristics of the embedded processor chip MCIMX31 and audio processor chip MC13783, which both are provided by the company that Freescale Semiconductor, designing the circuit of Hardware and low level driver. Building the driver of embedded audio system base on Windows CE platform, and the recording, transmitting and playing of audio data are discussed. The audio data and control are transmitted by Dual Digital Audio Bus and SSI interface, In the designing of audio driver, thought the used of DMA transmission and double buffers technology, improve the real time process of audio data.