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    • 8. 发明申请
    • Method and apparatus for performing cyclic redundancy checks
    • 执行循环冗余校验的方法和装置
    • US20050066256A1
    • 2005-03-24
    • US10666693
    • 2003-09-18
    • Donald HooperMatthew AdilettaStephanie Hirnak
    • Donald HooperMatthew AdilettaStephanie Hirnak
    • G11B20/18H03M13/00
    • G11B20/1816
    • Method and apparatus for performing centralized cyclic redundancy checks (CRC). For one embodiment a current thread of execution compares a connection index with that of a previous thread of execution. If they share the same connection index, a CRC calculation may be performed without providing a CRC residue to a centralized CRC unit since the most recently produced CRC residue by would be associated with a preceding sequential cell of the same packet. For an alternative embodiment a current thread of execution requests a CRC calculation and provides a connection index to the centralized CRC unit, which is used to access a content addressable memory (CAM). A hit in the CAM indicates that the CRC unit may use the CRC residue associated with the connection index in the CAM since it would have resulted from a preceding sequential cell.
    • 用于执行集中循环冗余校验(CRC)的方法和装置。 对于一个实施例,当前的执行线程将连接索引与先前的执行线程的索引进行比较。 如果它们共享相同的连接索引,则可以执行CRC计算,而不向集中式CRC单元提供CRC残留,因为最近产生的CRC残留将与相同分组的先前顺序单元相关联。 对于替代实施例,当前的执行线程请求CRC计算,并向用于访问内容可寻址存储器(CAM)的集中式CRC单元提供连接索引。 CAM中的命中指示CRC单元可以使用与CAM中的连接索引相关联的CRC残余,因为它将由先前的顺序单元导致。