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Application Notes/
Technical Brief
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TB043
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Title:
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KEELOQ® CRC Verification Routines
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Name:
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TB043
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Date:
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11/8/04
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Author:
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Lucio Di Jasio
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Description:
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All of the KEELOQ® Encoders share the same standard code word format composed of a basic set of 65 bits of information. Although, the Advanced Encoders (e.g. HCS360, HCS361) supplement that set with extra bits of information along with a pair of CRC bits (Cyclic Redundancy Check). This Technical Brief presents a routine in PICmicro ® microcontroller (MCU) assembly language that implements the CRC polynomial as used by Advanced KEELOQ Encoders and allows a KEELOQ receiver to verify the received code word.
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Keywords:
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KEELOQ, CRC, Receiver
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Related Information
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App Notes and Source Code
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TB043
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