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I/O block for a programmable interconnect circuit

  • US 6,703,860 B1
  • Filed: 12/14/2001
  • Issued: 03/09/2004
  • Est. Priority Date: 12/14/2001
  • Status: Expired due to Term
First Claim
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1. A programmable interconnect circuit, comprising:

  • a plurality of input/output (I/O) cells, wherein the I/O cells are arranged into a plurality of N I/O blocks and each I/O cell includes a multiplexer and a register associated with a pin of the programmable interconnect circuit;

    a plurality of N routing structures corresponding to the plurality of N I/O blocks, each routing structure configured to receive control and data signals from the plurality of I/O cells and programmably route the control and data signals into a set of control output signals and a set of data output signals;

    wherein each I/O block includes a programmable AND array, each programmable AND array being configured to receive the control output signals from its I/O block'"'"'s routing structure and to provide M product term outputs to its I/O block'"'"'s I/O cells, and wherein each I/O block'"'"'s registers may receive data signals from the set of data signals routed by its routing structure.

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