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ATM适配器是用户网络接口的关键。ATM适配器与CPU之间传送数据的最快方式是DMA(DirectMem oryAccess,直接内存存放 )方式。对ATM网络适配器中DMA设计的关键技术 (如信元头指示信号产生、请求方式下的同步与DMA和中断的配合 )进行分析 ,提出了解决方法 ,并给出逻辑分析仪实测的结果
ATM adapters are the key to the user’s network interface. The fastest way to transfer data between the ATM adapter and the CPU is DMA (Direct Memory Access). Analyzed the key technologies of DMA design in ATM network adapter (such as the generation of cell header indication signal, the synchronization of request mode and the cooperation of DMA and interrupt), put forward the solution and gave the result of logic analyzer measurement