Wiznet公司推出的带有PPPoE功能的网络芯片W3150A，带有SPI与Bus接口，文档为W3150A的DHCP设定程序，供参考。-Wiznet company launched the network with a PPPoE function chip W3150A, with SPI and Bus interface W3150A documentation for the DHCP set-up process, for reference.