ARM Technical Support Knowledge Articles

General: How should AHB to APB bridges handle accesses that are not 32-bits?

Applies to: AHB, APB

Answer

The bridge should simply pass the entire 32-bit data bus through the bridge. Please note that when transfers less than 32-bits are performed to an APB slave it is important to ensure that the peripheral is located on the appropriate bits of the APB data bus.

See also:

Article last edited on: 2014-02-06 07:40:06

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