https://community.nxp.com/t5/Sensors/MC33665A-CRC-Check-table-verification-method/m-p/2353480#M9056 <P>HI.</P><P>I plan to use the lookup table method in the lower-level machine to perform CRC verification for the MC33665A chip. I attempted to generate a CRC table based on the manual and perform lookup table operations. However, during my functional verification, I found that my CRC lookup table verification could not obtain the correct CRC verification value. I would like to know if there are any reference routines available for this CRC verification (I believe this should be a custom CRC16 algorithm), or if you could guide me regarding the errors in my program.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="33665_CRC.png" style="width: 917px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/382889i7186EFE86E29AF0E/image-size/large?v=v2&amp;px=999" role="button" title="33665_CRC.png" alt="33665_CRC.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">33665_CRC.png</span></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="CRC_Table.png" style="width: 636px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/382888i634B369B4FD21911/image-size/large?v=v2&amp;px=999" role="button" title="CRC_Table.png" alt="CRC_Table.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">CRC_Table.png</span></span></P> Mon, 20 Apr 2026 05:49:09 GMT Embedded_novice 2026-04-20T05:49:09Z https://community.nxp.com/t5/Sensors/MC33665A-CRC-Check-table-verification-method/m-p/2353480#M9056 <P>HI.</P><P>I plan to use the lookup table method in the lower-level machine to perform CRC verification for the MC33665A chip. I attempted to generate a CRC table based on the manual and perform lookup table operations. However, during my functional verification, I found that my CRC lookup table verification could not obtain the correct CRC verification value. I would like to know if there are any reference routines available for this CRC verification (I believe this should be a custom CRC16 algorithm), or if you could guide me regarding the errors in my program.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="33665_CRC.png" style="width: 917px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/382889i7186EFE86E29AF0E/image-size/large?v=v2&amp;px=999" role="button" title="33665_CRC.png" alt="33665_CRC.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">33665_CRC.png</span></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="CRC_Table.png" style="width: 636px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/382888i634B369B4FD21911/image-size/large?v=v2&amp;px=999" role="button" title="CRC_Table.png" alt="CRC_Table.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">CRC_Table.png</span></span></P> Mon, 20 Apr 2026 05:49:09 GMT https://community.nxp.com/t5/Sensors/MC33665A-CRC-Check-table-verification-method/m-p/2353480#M9056 Embedded_novice 2026-04-20T05:49:09Z