CLRXFIFO
DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
DC395x_write8(acb, TRM_S1040_DMA_CONTROL, ABORTXFER | CLRXFIFO);
DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
DC395x_write8(acb, TRM_S1040_DMA_CONTROL, STOPDMAXFER | CLRXFIFO);
DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);