40位以内任意长度的CRC计算及校验的实现

Realization of 40Bit Arbitrary CRC Calculation and Verification

论述了 4 0位以内任意长度的 CRC计算及校验在 TMS32 0 C5 0 0 0系列 DSP中的实现方法。运用该方法能实现任意信息长度的 4 0位以内任意 CRC码的计算及校验 ,如常见的 CRC- 3、CRC- 12、CRC- 16、CRC- 2 4、CRC- 32等。该法充分利用了不同 CRC码的共性及 TMS32 0 C5 0 0 0的特点 ,具有代码简洁、运算速度快等特点。同时 ,该设计思路也可以方便地在其它 DSP或单片机中实现。

The realization method of 40 bit arbitrary CRC calculation and verification in TMS320C5000 series DSP is discussed in this paper. This method can calculate and verify 40 bit arbitrary CRC (e.g. CRC-3、CRC-12、CRC-16、CRC-24、CRC-32) for information of random length. By sharing various CRC common feature and the characteristics of TMS320C5000 ,the code is compact ,and the process speed is fast. Furthermore , the idea can also be conveniently used in other DSP or micro-processors.