FEC_OC_SNC_FAIL_PERIOD__A
rc = drxj_dap_write_reg16(dev_addr, FEC_OC_SNC_FAIL_PERIOD__A, (u16)fec_oc_snc_fail_period, 0);
rc = drxj_dap_read_reg16(dev_addr, FEC_OC_SNC_FAIL_PERIOD__A, &fec_oc_period, 0);
status = write16(state, FEC_OC_SNC_FAIL_PERIOD__A, fec_rs_period);