Reconfigurable logic element with input swapping
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United States of America Patent
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Issued Date -
Dec 16, 2004
app pub date -
Jun 12, 2003
filing date -
Jun 12, 2003
priority date (Note) -
Abandoned
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Abstract
A novel reconfigurable logic element (RLE) architecture for use in an integrated circuit itself used in an emulation system is disclosed. The RLE has lookup table logic circuitry for implementing a function. In addition, the RLE contains multi-stage coupling logic circuitry correspondingly coupling RLE inputs to the inputs of the lookup table logic circuitry. This allows global routing of the emulation system by circuit design mapping software to be much more flexible, as the routing may be configured independently of those four input constraints due to the ability to reassign the inputs with the swapper.
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