Utilization of unused IO block for core logic functions

Details Utilization of unused IO block for core logic functions Utilization of unused IO block for core logic functions

2007-01-02

2007-01-02

Nguyen, Linh (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Array

C326S038000, C326S039000, C326S040000

Reexamination Certificate

active

10347139

ABSTRACT:
A method and an improved FPGA apparatus for enabling the selective deployment of unused flip-flops or other circuit elements in IO cells and unused decoders or other circuit elements in Look Up Tables (LUT), for core logic functions is provided, comprising disconnecting means for selectively disconnecting unused circuit elements from the IO pad circuitry or from said LUT circuitry, and connecting means for selectively connecting said disconnected circuit elements either to the connection matrix of the core logic or between themselves to provide independently configured functions.

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Xilinx's data book of year 1999 (Virtex device IOB on p. 3-6).

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