ARM Technical Support Knowledge Articles

General: What is a default slave?

Applies to: AHB

Answer

If the memory map of a system does not define the full 4 gigabyte address space then a default slave is required, which is selected when an access is attempted to the empty areas of the memory map. The default slave should use an OKAY response for IDLE/BUSY transfers and an ERROR response sequence for NONSEQ/SEQ transfers.

See also:

Article last edited on: 2014-02-06 14:39:28

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