ARM Technical Support Knowledge Articles

How does NIC-301 asynchronous bridge deal with burst transfers?

Applies to: NIC-301 Network Interconnect

Answer

There is no AHB asynchronous bridge inside PL301, just an AXI async. bridge. This AXI asynchronous bridge will not convert bursts to SINGLEs, it will leave them untouched.

However, should you connect an AHB master to PL301 through an AXI2AHB converter then this will convert undefined length bursts to SINGLEs since there is no direct mapping of an undefined length burst in AXI; all other burst types will remain the same through the converter.

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