RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);

    GPIO_InitTypeDef DPinout,BPinin;
    DPinout.GPIO_Pin=GPIO_Pin_All;
    DPinout.GPIO_Mode=GPIO_Mode_Out_PP;
    DPinout.GPIO_Speed=GPIO_Speed_10MHz;

    BPinin.GPIO_Pin=GPIO_Pin_9;
    BPinin.GPIO_Mode=GPIO_Mode_IPD;
    BPinin.GPIO_Speed=GPIO_Speed_10MHz;

    GPIO_Init(GPIOD,&DPinout);
    GPIO_Init(GPIOB,&BPinin);

    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ETH_MAC, ENABLE);
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ETH_MAC_Rx, ENABLE);
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ETH_MAC_Tx, ENABLE);

    ETH_InitTypeDef ETH_Var;
    ETH_Var.ETH_ReceiveAll=DISABLE;
    ETH_Var.ETH_ReceiveOwn=ETH_ReceiveOwn_Enable;
    ETH_StructInit(&ETH_Var);
    ETH_PHYLoopBackCmd(PHY_Loopback, ETH_LoopbackMode_Enable);

    ETH_MACTransmissionCmd(ENABLE);
    ETH_MACReceptionCmd(ENABLE);
    ETH_MACAddressConfig(ETH_MAC_Address0,ETH_DMARxDesc_Buffer1 );




    ETH_Init(&ETH_Var,0x01);
    ETH_Start();

    ETH_DMADESCTypeDef ETH_DMA_Var;
    ETH_DMARxDescReceiveITConfig(&ETH_DMA_Var,ENABLE);
    ETH_DMARxDescChainInit(&ETH_DMA_Var,ETH_DMARxDesc_Buffer1,1);
    ETH_DMARxDescSecondAddressChainedCmd(&ETH_DMA_Var,ENABLE);