Maxim-integrated 73M1866B/73M1966B Reference Driver Manual do Utilizador descarregar pdf (Página 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.

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Maxim-integrated 73M1866B/73M1966B Reference Driver Manual do Utilizador Página 14