Design and Implementation of Audio Driver Based on Audio Codec’97 for Embedded System

This paper describes an architecture of the system which consists of the codec-UCB1400 and the INTEL Xscale PXA255, and design of audio device driver based on Audio Codec’97 for Windows CE. The paper focuses on the implementation of the DMA for improving the performance of this audio system to satisfy the real-time requirement of audio system.Some software improvements have been done to reduce the power consumption.