XM_IS_TXF_UR = 1<<2, /* Bit 2: Transmit FIFO Underrun */
XM_IS_TX_COMP = 1<<1, /* Bit 1: Frame Tx Complete */
XM_IS_RX_COMP = 1<<0, /* Bit 0: Frame Rx Complete */
XM_IS_TXF_UR = 1<<2, /* Bit 2: Transmit FIFO Underrun */
XM_IS_TX_COMP = 1<<1, /* Bit 1: Frame Tx Complete */
XM_IS_RX_COMP = 1<<0, /* Bit 0: Frame Rx Complete */