IQM_CF_OUT_ENA__A
rc = drxj_dap_write_reg16(dev_addr, IQM_CF_OUT_ENA__A, IQM_CF_OUT_ENA_VSB__M, 0);
rc = drxj_dap_write_reg16(dev_addr, IQM_CF_OUT_ENA__A, IQM_CF_OUT_ENA_QAM__M, 0);
status = write16(state, IQM_CF_OUT_ENA__A, 0x4); /* enable output 2 */
status = write16(state, IQM_CF_OUT_ENA__A, 1 << IQM_CF_OUT_ENA_QAM__B);