Maxim Integrated 73M1822/73M1922 MicroDAA Software Architecture - Manual (Page 5)

UG_1x22_057 73M1822/73M1922 MicroDAA Software Architecture User Guide
Rev. 1.0 5
1 Introduction
1.1 General
The Teridian Semiconductor 73M1822 MicroDAA
TM
is the world’s first single-package silicon DAA for
data/fax modem and voice applications. It provides a serial MAFE (Modem Analog Front End) interface
to popular DSP/host processors to implement a globally compliant low-cost soft modem solution.
The 73M1822 MicroDAA can be packaged in a two-chip configuration as the 73M1922 chip set, which
consists of a 73M1902 host side chip and a 73M1912 line side chip. The MicroDAA integrates all codec
and DAA functions required to achieve reliable PSTN connection worldwide.
1.2 Purpose and Scope
The 73M1x22 software provides the necessary system and user interfaces for use of the 73M1822 or
73M1922 as a soft modem or fax. The scope of this document includes discussion of the software’s
architecture as well as general discussion of the functions and interfaces for various modules within the
overall system.