公开(公告)号：US20150106682A1

公开(公告)日：2015-04-16

申请号：US14462205

申请日：2014-08-18

Applicant: ARM LIMITED

Inventor： Thomas Christopher GROCUTT ,  Dall George Mathew AMOS

IPC: G06F11/10

CPC classification number: G06F11/1004 ,  H03M13/09 ,  H03M13/091 ,  H04L1/0041 ,  H04L1/0061

Abstract: Circuitry for providing error check values for indicating errors in data portions within a data stream. The circuitry comprises error detecting code generation circuitry configured to apply an error detecting code algorithm to the data stream and to thereby generate and periodically update a multi-bit check value as the data stream is processed, each update of the multi-bit check value being indicative of the error detecting code generation circuitry receiving a further item of the data stream. An output for periodically outputting a fragment of the multi-bit check value from the error detecting code generation circuitry during the processing of the data stream, the fragments output each corresponding to a data portion of the data stream. Wherein each of the fragment of the multi-bit check value provides a value indicative of an error occurring either in the corresponding portion of the data stream or in an earlier portion of the data stream.

Abstract translation: 用于提供用于指示数据流内的数据部分中的错误的错误检查值的电路。 该电路包括错误检测代码生成电路，该错误检测代码产生电路经配置以将错误检测代码算法应用于数据流，并由此在处理数据流时生成并周期性地更新多位检查值，多位检查值的更新为 指示错误检测代码生成电路接收数据流的另一个项目。 一种输出，用于在数据流的处理期间周期性地从错误检测码产生电路输出多比特校验值的片段，每个与数据流的数据部分相对应的片段输出。 其中，多位检查值的每个片段提供指示在数据流的相应部分或数据流的较早部分中出现的错误的值。