本文提出了基于32位的RISC嵌入式處理器的流媒體攜帶式系統(tǒng)的設(shè)計及改進。該系
統(tǒng)以32位的嵌入式處理器Intel PXA270處理器為設(shè)計的硬件平臺，以嵌入式Linux操作系統(tǒng)為軟件平臺，并且對處理器PXA270的I/O接口以及視頻解碼端口進行改進，使其支持PCI總線協(xié)議。本文論述了系統(tǒng)的硬件和軟件模塊的設(shè)計，以及采用FPGA設(shè)計PCI接口的過程。
關(guān)鍵字：流媒體，32位RISC處理器，嵌入式Linux系統(tǒng)，PCI接口，F(xiàn)PGA
Abstract：A 32 bit RISC processor system for portable streaming media application is presented and designed in the paper. The portable streaming media in the system is designed of the embedded processor Intel PXA270 processor and embedded Linux operating system. Improve the I/O interface of the processor and video codec interface to support PCI bus protocol. In the paper, the hardware design，software design，and the PCI interface design are discussed in detail．
Keywords：Streaming Media, 32 bit RISC Processor, Embedded system, PCI Interface, FPGA