Patent ID: 7274213

Claim:
An integrated circuit (IC), comprising: a plurality of configurable logic resources coupled to a configuration memory and adapted to perform a logic function in response to data in the configuration memory; and a hardwired logic circuit arranged to be coupled to the plurality of configurable logic resources in response to data in the configuration memory, the hardwired logic circuit adapted to exchange internal data with the configurable logic resources and including, a first data-valid circuit coupled to receive the internal data and adapted to generate a first signal that indicates whether the internal data is valid; a first register coupled to receive the internal data; a programmable data generator adapted to generate programmable data with at least one value responsive to programming of the programmable data generator; and a multiplexer coupled to the first data-valid circuit, the first register, and to the programmable data generator, the multiplexer arranged to select between data from the first register and data from the programmable data generator in response to a state of the first signal.