Maxim Integrated 73M1822/73M1922 Control Module - Manual (Page 14)

73M1822/73M1922 Control Module User Guide UG_1x22_053
14 Rev. 1.0
4 Country Specific Settings
The 73M1x22 Control Module supports global compliance parameters for each DAA device it manages.
When selected for a specific country code using M1X22_CH_INIT, the following predefined parameters
will be applied:
1. AC termination impedance – AC impedance register value.
2. DC termination mask – DC mask value.
3. Ring Detection – Ring detection threshold value.
4. Automatic CID Enable – Automatically enter CID state when on hook.
5. Use Seize State – If set, the driver enter seize state for 350 ms before setting ENNOM (refer to the
73M1822/73M1922 Data Sheet for a detailed explanation of the seize state).
These parameters are defined in the Country Code Parameter files (tsc_1x22_ctl_cntry_tbl.c)
and can be changed as required. The list of the country codes supported can be found in
Appendix A .