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*Home > Technical Support > FAQs > IP FAQs > General: Is a default slave really necessary?
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downarrowGeneral: Is a default slave really necessary?

Applies to:AMBA AHB

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.

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