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Subject: CMX866 Operation with Low Level Commands
The CMX866 is a V.22bis modem IC that was designed to connect to off-the-shelf V.22bis-capable modems using
industry standard “AT” commands.
Special AT commands must be used to allow the CMX866 to perform low-level functions such as DTMF generation
and programmable dual tone detection.
The purpose of this application note is to describe how the CMX866 can be made to perform these types of functions.
[application note link].
Subject: CLI Type 1 Operation using the CMX866
Internally the CMX866 has two parts, a V.22bis modem and a simple AT interpreter.
The software written to perform the AT interpretation, is “hard wired” into the CMX866, however there is a small
amount of test RAM available that is normally only used for CML testing purposes.
This application note will describe a method of implementing a software routine that makes it possible to use
the CMX866 in CLI Type 1 applications
[application note link].
[binary file link].
Subject: CMX86x and CMX850 Filter Coefficient Generator Program
This application comprises the Filter Coefficient Generator program as an Excel spreadsheet.
[application program link].