Wireless no-touch testing of integrated circuits
First Claim
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1. An integrated circuit comprising:
- one or more functional blocks to be tested when said integrated circuit is placed in a test mode;
one or more test structures configured to test said one or more functional blocks when said integrated circuit is placed in said test mode;
a wireless interface which receives test data over a wireless connection, the test data comprising a frame having a plurality of bits; and
a test access mechanism which controls input of said received test data to said test structures, wherein at least two of said plurality of bits of the frame are applied to different respective test structures on said integrated circuit.
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Abstract
A wireless integrated circuit test method and system is presented. The invention allows testing of one or more integrated circuits configured with a wireless interface and a test access mechanism which controls input of test data received over a wireless connection from a test station to test structures which test functional blocks on the integrated circuit. Via the wireless connection, multiple integrated circuits or similarly equipped devices under test can be tested simultaneously. The invention also enables concurrent testing of independently testable functional blocks on any given integrated circuit under test.
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Citations
13 Claims
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1. An integrated circuit comprising:
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one or more functional blocks to be tested when said integrated circuit is placed in a test mode; one or more test structures configured to test said one or more functional blocks when said integrated circuit is placed in said test mode; a wireless interface which receives test data over a wireless connection, the test data comprising a frame having a plurality of bits; and a test access mechanism which controls input of said received test data to said test structures, wherein at least two of said plurality of bits of the frame are applied to different respective test structures on said integrated circuit. - View Dependent Claims (2, 3, 4, 5)
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6. A system for testing an integrated circuit, comprising:
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a plurality of integrated circuits, each comprising; one or more functional blocks to be tested when said integrated circuit is placed in a test mode; one or more test structures configured to test said one or more functional blocks when said integrated circuit is placed in said test mode; a wireless interface which receives and extracts test data from a wireless connection; and a test access mechanism which controls input of said received test data to said test structures; and a test station comprising a test station wireless interface which simultaneously transmits the test data over the wireless connection to the wireless interfaces of each of the plurality of integrated circuits. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A method for testing integrated circuits comprising:
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obtaining test data; simultaneously sending said test data via a wireless interface over a wireless connection to a plurality of integrated circuit devices under test, each comprising one or more functional blocks to be tested when said respective integrated circuit device under test is placed in a test mode, one or more test structures configured to test said one or more functional blocks when said respective integrated circuit device under test is placed in said test mode, a wireless interface which receives and extracts said test data from said wireless connection; and
a test access mechanism which controls input of said received test data to said test structures of said respective integrated circuit device under test. - View Dependent Claims (13)
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Specification