ARM Technical Support Knowledge Articles

Are there any issues related to hazard detection on overlapping locations?

Applies to: AXI

Answer

Hazard detection needs to be done on the entire "container" of the transfer as defined by ADDR, SIZE, BURST and LEN. Overlapping locations need to be dealt with appropriately if forwarding is used. For the simpler schemes, i.e. stalling until earlier transfers have completed, partially overlapping and fully overlapping transactions can be treated the same.

Article last edited on: 2008-09-09 15:47:45

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