A technique is provided for an electrical device to automatically detect one
of
a plurality of interface standards to operate in accordance with. More particularly,
a direct access arrangement (DAA) for communicating with telephone lines is provided
for utilization with modem communications over a phone line. The DAA may be configured
to automatically detect and operate in accordance with a plurality of interface
standards for communications to a host system. For example, the DAA may detect
that communications are to be provided in accordance with the AC-97 interface standard
or the Azalia interface standard. In one embodiment, a clock signal may be monitored
to determine the proper interface mode. In another embodiment, the automatic detection
of the proper interface mode may be accomplished by monitoring the data presented
to the DAA through the interface standard.
