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TL32 Datasheet(PDF) 13 Page - List of Unclassifed Manufacturers

Part # TL32
Description  Real Time System Testing MIT 16.070 Lecture 32
PDF  31 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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TL32 Datasheet(HTML) 13 Page - List of Unclassifed Manufacturers

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hperry
5/4/01
Fault Tolerance - Checking Hardware Resources
How can a processor check its own status?
•
Built-In-Test (BIT)
– Ongoing diagnostics of the hardware that runs the software
– Interface checks
•
CPU testing (done in the background)
•
Memory testing
– Checking for memory corruption due to vibration, power surges,
electrostatic discharge, single event upsets, etc.
– Use error detection & recovery schemes (CRC, Hamming Code)
•
Watchdog Timers
– Counting registers used to ensure that devices are still on line
– CPU resets the timer at regular intervals. Timer overflow indicates
a problem with the CPU



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