公开(公告)号：US20230307077A1

公开(公告)日：2023-09-28

申请号：US17704289

申请日：2022-03-25

Applicant: Arm Limited

Inventor： Siddharth GUPTA ,  Cyrille Nicolas DRAY ,  Luc Olivier PALAU ,  Sachin GULYANI ,  Antony John PENTON

IPC: G11C29/42 ,  G11C29/44 ,  G11C29/18 ,  G11C29/00

CPC classification number: G11C29/42 ,  G11C29/4401 ,  G11C29/18 ,  G11C29/785 ,  G11C2029/1202

Abstract: An apparatus is provided having a memory device and associated access control circuitry, and an additional memory device and associated additional access control circuitry. Redundant data generation circuitry generates, for a given block of data having an associated given memory address, an associated block of redundant data for use in an error detection process. The access control circuitry is arranged to store, at a location in the memory device determined from the given memory address, at least a portion of the given block of data and a first copy of the associated block of redundant data, and the additional access control circuitry is arranged to store, at a location in the additional memory device determined from the given memory address, any remaining portion of the given block of data not stored in the memory device and a second copy of the associated block of redundant data. Error detection circuitry performs the error detection process on the stored given block of data using one copy of the associated block of redundant data, and generates an output signal indicating a result of the error detection process. Comparison circuitry compares the first and second copies of the associated block of redundant data, and generates a comparison result signal to supplement the output signal from the error detection circuitry.