Programmable logic device with differential communications...

Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital logic testing

Reexamination Certificate

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Details

C714S724000, C714S726000, C714S727000, C714S729000, C326S038000, C326S039000, C326S041000

Reexamination Certificate

active

08086922

ABSTRACT:
Programmable logic device integrated circuits with differential communications circuitry are provided in which the differential communications circuitry is used to support programming, testing, and user mode operations. Programming operations may be performed on a programmable logic device integrated circuit by receiving configuration data with the differential communications circuitry and storing the received configuration data in nonvolatile memory. The nonvolatile memory may be located in an external integrated circuit such as a configuration device or may be part of the programmable logic device integrated circuit. The stored configuration data may be loaded into configuration memory in the programmable logic device to program the device to perform a desired custom logic function. The differential communications circuitry may be used to handle boundary scan tests and programmable scan chain tests. During user mode operations the differential communications circuitry carries user data traffic.

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