摘要：本应用笔记介绍了包错误检查（ PEC ） ，因为它适用于DS1862激光控制和数字诊断IC 。 DS1862包含一个CRC- 8字节和其他一些特殊字节，以提高可靠性的通信总线。讨论的主题包括两种方法计算的CRC -8 ，几个计算实例，以及如何指导具体实施的DS1862 。Maxim > Design support > App notes > Digital Potentiometers > APP 3749 Keywords: DS1862, CRC-8, CRC8, PEC, XFP, laser, laser driver, digital diagnostics, packet error checking Mar 20, 2006 APPLICATION NOTE 3749 A Quick-Start Guide to DS1862 Packet-Error Checking Abstract: This application note explains packet-error checking (PEC) as it applies to the DS1862 laser-control and digital-diagnostics IC. The DS1862 incorporates a CRC-8 byte and several other special bytes to improve the reliability of the communication bus. Topics discussed include two methods for calculating the CRC-8, several calculation examples, and a how-to guide on implementation specific to the DS……