RE_TDFNR
CSR_WRITE_1(sc, RE_TDFNR, 0x8);
CSR_WRITE_1(sc, RE_TDFNR, 0x8);
CSR_WRITE_1(sc, RE_TDFNR, 0x1);
CSR_WRITE_1(sc, RE_TDFNR, 0x8);
CSR_WRITE_1(sc, RE_TDFNR, 0x8);
CSR_WRITE_1(sc, RE_TDFNR, 0x8);
CSR_WRITE_1(sc, RE_TDFNR, 0x8);
CSR_WRITE_1(sc, RE_TDFNR, 0x4);
CSR_WRITE_1(sc, RE_TDFNR, 0x4);
CSR_WRITE_1(sc, RE_TDFNR, 0x10);