CRC Engines in C2000 Devices

This application report is an introduction to the various CRC modules that are available on the C2000 device families. References are provided to software examples and the differences between the CRC modules are highlighted. Also, guidance about selecting a CRC module for a specific use-case is discussed in Section 9.

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1 Introduction

Cyclic Redundancy Check (CRC) is an error detection mechanism used in communication networks and data storage. The C2000 family of devices discussed in Section 11 contains many CRC modules (with different properties discussed in Section 10) that provide the end application builder the options to pick the right engine for the application. Additionally there are CRC engines present within C2000 devices in CLB, FSI, USB, CAN, EMAC, EtherCAT, and so forth that are not discussed in this document. If the data and corresponding CRC are modified together that will not be detectable by this mechanism.