DC_AX_FILTDATA
CSR_WRITE_4(sc, DC_AX_FILTDATA, eaddr[0]);
CSR_WRITE_4(sc, DC_AX_FILTDATA, eaddr[1]);
CSR_WRITE_4(sc, DC_AX_FILTDATA, 0);
CSR_WRITE_4(sc, DC_AX_FILTDATA, 0);
CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[0]);
CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[1]);