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US 7,117,416 B1Granted
Method and apparatus to facilitate self-testing of a system on chip
AssigneeXilinx, Inc.
InventorBrian Fox
Life of this patent
Estimating the term…
Abstract
A method and apparatus for providing a system-on-a-chip comprising a processor and a configurable system logic (CSL) including a plurality of banks arranged in an array coupled to the processor. The system on a chip further includes a built-in self test (BIST) mechanism coupled to the CSL to perform tests on the CSL to verify that the banks and interconnections between the banks are functioning properly.
Claims15
A system-on-a-chip comprising:
- a processor;
- programmable logic coupled to the processor, wherein the programmable logic comprises a plurality of interconnected banks arranged in an array;
- a built-in self test (BIST) mechanism coupled to the programmable logic to perform one or more tests on the programmable logic;
- and
- a test isolation signal that allows testing of a part of the programmable logic
- a mechanism to provide test data for one block within one bank of the array;
- and
- wherein the BIST mechanism replicates the test data to provide the test data to the plurality of interconnected banks of the array.
5 more elements
A system for testing a system-on-a-chip including a processor and a configurable system logic (CSL), the system comprising:
- means for performing a plurality of tests on the CSL using vector arrays to verify that banks and interconnections between the banks are functioning;
- means for generating a single cyclic redundancy check (CRC) output of the tests;
- and
- if the CRC result corresponds to an expected result, means for passing the system-on-a-chip.
1 more element
A system on a chip comprising:
- programmable logic;
- a plurality of multiplexers coupled to the programmable logic;
- built-in self test (BIST) circuitry coupled to a multiplexer of the plurality of multiplexers to perform testing on the multiplexer;
- and
- test isolation circuitry configured to isolate the multiplexer for testing.
2 more elements
Dependencies are inferred from the claim text.