XM_MODE
SK_XM_SETBIT_4(sc_if, XM_MODE, XM_MODE_FLUSH_TXFIFO);
SK_XM_SETBIT_4(sc_if, XM_MODE, XM_MODE_FLUSH_RXFIFO);
SK_XM_SETBIT_4(sc_if, XM_MODE, XM_MODE_RX_BADFRAMES|
reg = SK_XM_READ_4(sc_if, XM_MODE);
SK_XM_WRITE_4(sc_if, XM_MODE, reg);