dm9000网卡驱动开辟文档TheDM9000isafullyintegratedandcost-effectiveFastEthernetMACcontrollerwithageneralprocessorinterface,anEEPROMinterface,a10/100MPHYand4K-dwordSRAM(3K-byteforTXFIFOand13K-byteforRXFIFO).Itisdesignedwithlowpowerandhighperformanceprocessthatsupports3.3Vwith5VtolerantI/O.Besides,theDM9000supports8/16/32-bitprocessorinterfacetointernalmemoryaccessesformanydifferentprocessors.