| 摘要 |
Each output signal of programmable logic circuitry is made programmably available to drive one or more of a plurality of tri-statable input/output pins of the circuitry. Each output signal is also made programmably available to provide the output enable signal for one or more of a multiplicity of those input/output pins. The above-mentioned plurality and multiplicity associated with each output signal may include the same or different input/output pins. Output signals may therefore be routed to the input/output pins with greater flexibility, and output enable signal options are also greatly increased.
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