TESTABLE ELECTRONIC DEVICE FOR WIRELESS COMMUNICATION
First Claim
1. An electronic device comprising:
- a transceiver stage for communicating signals between the electronic device and a further device; and
a baseband processor arrangement implementing a built-in self test arrangement for, in a test mode;
forwarding a test signal to the transceiver stage;
receiving a response to the test signal; and
determining, for the response, a deviation from an expected response to the test signal;
characterized in that the built-in self test arrangement further comprises;
a plurality of records, each record comprising predetermined response deviations to different test signals caused by a parametric fault; and
means for selecting those records from the plurality of records for which the predetermined response deviation corresponds to the deviation of the received response.
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Accused Products
Abstract
An electronic device is disclosed comprising a transceiver stage (140) for communicating signals between the electronic device and a further device; and a baseband processor arrangement (120) implementing a built-in self test arrangement for testing the transceiver channels of the electronic device (100). The built-in self test arrangement further comprises a plurality of records, each record comprising predetermined response deviations to different test signals caused by a parametric fault; and means for selecting those records from the plurality of records for which the predetermined response deviation corresponds to the deviation of the received response. The present invention is based on the realization that a deviation of a response to a test signal from an expected value is dependent on specific parametric faults in specific components in the test signal path and, in addition, on the shape of the test signal. This information is stored in the BIST arrangement and is used to identify a parametric fault, if present, by subjecting the electronic device to a series of test signals.
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Citations
11 Claims
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1. An electronic device comprising:
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a transceiver stage for communicating signals between the electronic device and a further device; and a baseband processor arrangement implementing a built-in self test arrangement for, in a test mode; forwarding a test signal to the transceiver stage; receiving a response to the test signal; and determining, for the response, a deviation from an expected response to the test signal; characterized in that the built-in self test arrangement further comprises; a plurality of records, each record comprising predetermined response deviations to different test signals caused by a parametric fault; and means for selecting those records from the plurality of records for which the predetermined response deviation corresponds to the deviation of the received response. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of testing an electronic device comprising:
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a transceiver stage for communicating signals between the electronic device and a further device; and a baseband processor arrangement, the method comprising; forwarding a test signal to the transceiver stage; receiving a response to the test signal; and determining, for the response, the deviation from the expected response to the test signal; characterized by further comprising; providing a plurality of records, each record comprising predetermined response deviations to different test signals caused by a parametric fault; and selecting those records from the plurality of records for which the predetermined response deviation corresponds to the deviation of the received response. - View Dependent Claims (9, 10, 11)
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Specification