PATHDocumentation > Hardware > Power Mac G4 Cube Developer Note

     

Modem Support

The KeyLargo IC has a Macintosh serial port that is the interface to the modem connector. The KeyLargo IC provides DB-DMA support for the modem interface. The modem provides analog call progress signals, which are digitized by the sound codec and output by way of the USB ports.

The internal hardware modem is a separate module that contains the modem ICs (controller and datapump) and the interface to the telephone line (DAA). For more information about the modem, see Internal Modem.


© 2000 Apple Computer, Inc. (Last Updated 04 Oct 00)