Maxim Integrated 73M1866B/73M1966B Reference Driver - Manual (Page 14)

73M1866B/73M1966B Reference Driver User Guide UG_1x66B_015
14 Rev. 2.7
4 Country Specific Settings
The 73M1x66B Reference Driver supports global compliance parameters for each DAA device it
manages. When selected for a specific country code using M1966_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
73M1x66B Data Sheet, Section 10.2 – DC Termination, for the detail explanation of the seize state).
These parameters are defined in the Country Code Parameter files (m1966_cntry_tbl.c) and can be
changed as required. The list of the country codes supported can be found in
Appendix A .