摘要:
A data processing system has at least one integrated circuit containing a central processing unit (CPU) that includes at least first and second processing cores. The integrated circuit also includes input facilities that receive control input specifying which of the processing cores is to be utilized. In addition, the integrated circuit includes configuration logic that decodes the control input and, in response, selectively controls reception of input signals and transmission of output signals of one or more of the processing cores in accordance with the control input. In an illustrative embodiment, the configuration logic is partial-good logic that configures the integrated circuit to utilize the second processing core, in lieu of a defective or inactive first processing core, as a virtual first processing core.
摘要:
The foregoing objects are achieved as is now described. A method and system for testing an integrated circuit are provided. A test substrate is provided which is manufactured by the same particular production technology for which the complex integrated circuit is designed. A pattern generator for generating test data and a result checker for comparing output data are embedded on the test substrate. Isolated portions of circuitry of the integrated circuit are selectively embedded onto the test substrate. The isolated portions of circuitry are subjected to testing by applying test data from the pattern generator to the isolated portions of circuitry. Errors in the isolated portions of circuitry are detected with the result checker by comparing data output from the isolated portions of circuitry with predetermined expected data, such that the integrated circuit is tested by susets, independently of testing the integrated circuit in its entirety.
摘要:
A method and system for testing an integrated circuit. A test substrate is provided which is manufactured by the same particular production technology for which the integrated circuit is designed. A pattern generator for generating test data and a result checker for comparing output data are embedded on the test substrate. Isolated portions of circuitry of the integrated circuit are selectively embedded onto the test substrate. Test data from the pattern generator is applied to the isolated portions of circuitry under a first operating condition. The data output from the isolated portions of circuitry is selectively recorded into the result checker. The isolated portions of circuitry are then subjected to testing by applying test data from the pattern generator to the isolated portions of circuitry under a second operating condition. Errors in the isolated portions of circuitry are detected with the result checker by comparing data output from the isolated portions of circuitry with the selectively recorded data output, such that the integrated circuit is tested by subsets, independently of testing the integrated circuit in its entirety.
摘要:
The present invention is embodied in a clock controller for generating and controlling the phase alignment of a plurality of ratioed sub-clocks. A master clock is preferably input to a clock splitter to provide a plurality of slave clocks. Phase holds, generated from the slave clocks, are then used to gate each of the slave clocks to produce ratioed clocks that produce phase aligned clock pulses at integer factors of the master clock frequency. The clock controller controls the ratioed clocks by processing commands to start, stop, or pulse the ratioed clocks.