1MPC8280的AAL2适配与DMA通道驱动软件的实现  

Implementation of AAL2 adapter and DMA channel driving software

作　　者：邵凯[1] 梁燕[1] 黄俊[1] 

机构地区：[1]重庆邮电大学通信网与测试技术重点实验室,重庆400065

出　　处：《国外电子元器件》2008年第3期59-61,共3页International Electronic Elements

基　　金：重庆市科委(CSTC;2005AC2040;2006AB2013;2005AC2081);重庆市经委(No.05-1GX-DZ180)

摘　　要：在TD-SCDMA网络中,ATM适配层采用AAL5和AAL2处理ATM数据。由于目前大部分网络处理器都只支持AAL5的适配,不适合TD网络测试仪的应用。本文介绍了TD-SCDMA网络测试仪中基于PowerPC8280的ATM数据采集与DMA传输的实现方案,重点说明了AAL2适配以及利用PCI的DMA传输完成上层应用与底层硬件的数据交互。实际应用表明,文中提出的数据采集卡能够正确处理ATM协议的AAL2适配和DMA传输。In ID-SCDMA networks, ATM adopts AAL5 and AAL2 to process ATM data. Due to present networks processor being only applicable for AALS, which is not suitable for TD network testing. A new PowerPC8280-based ATM data collection and DMA transmission project is introduced in TD networks tester, which dedicate the AA12 adapter and the data interact between application layer and physical layer through PCI-based DMA.Application proves that PowerPC8280-based ATM data collector is suitable for AAL2 adapting and DMA transmission.

关 键 词：MPC8280 ATM适配层2(AAL2) TD-SCDMA 直接内存存取(DMA) 

分 类 号：TN492[电子电信—微电子学与固体电子学]