James Richard Yoder

US Patent:

20140270122, Sep 18, 2014

Filed:

May 30, 2014

Appl. No.:

14/291696

Inventors:

- Allentown PA, US
Harold T. Simmonds - Stewartsville NJ, US
James D. Yoder - Leola PA, US

Assignee:

Agere Systems LLC - Allentown PA

International Classification:

H04M 3/00

US Classification:

379 9306

Abstract:

The invention provides a communication protocol and serial interface having an approximately fixed interface clock and capable of accommodating a variety of communication rates. The interface employs a variable-length frame that may be expanded or reduced to obtain a desired communication rate, even though the interface clock rate is held approximately constant. The invention further provides a method for designing an agile barrier interface. In particular, the barrier clock rate is preferably selected to be an approximate common multiple of the various communication rates that the barrier interface must handle. The frame length corresponding to each communication rate may then be obtained by dividing the barrier clock rate by the ΣΔ rate. Finally, the invention provides an agile barrier capable of communicating data across a serial interface at a variety of data rates and at an approximately fixed interface clock rate.