ARM Technical Support Knowledge Articles

General: Is a default slave really necessary?

Applies to: AHB

Answer

If the entire 4 gigabyte address space is defined then a default slave is not required. If, however, there are undefined areas in the memory map then it is important to ensure that a spurious access to a non-existent address location will not lock up the system. The functionality of the default slave is extremely simple and it will often make sense to implement this within the decoder.

See also:

Article last edited on: 2014-02-06 14:49:37

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