Reference clock failure detection on serial interfaces

Details Reference clock failure detection on serial interfaces Reference clock failure detection on serial interfaces

2003-05-29

2008-10-07

Bonzo, Bryce P. (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C370S222000, C370S235000

Reexamination Certificate

active

07434106

ABSTRACT:
The present invention is a system and method for determining clock rate failure in a serial communication interface. A complete clock rate failure can be detected. Alternatively, or in addition, the interface includes a rate matching buffer in which fill characters are added or deleted to accommodate minor clock variations. The number of fill characters added or deleted is monitored to determine whether clock variation is outside of a desired threshold.

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