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SoC Design and Simulation forum The BUSY state of HTRANS, compared AHB 2.0 with AHB 5.0

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The BUSY state of HTRANS, compared AHB 2.0 with AHB 5.0

E K 6 months ago

Hi，

I have a question about AHB protocal. I had read "AHB 5.0 Specification" and "AHB 2.0 Specification". Compared these specifications, the following pictures about BUSY state are from "AHB 5.0 Specification"，but cannot find the corresponding information in "AHB 2.0 Specification". So I would like to ask whether the BUSY(htrans) signal has the same behaviors in AHB 2.0? Do BUSY states of HTRANS between AHB 2.0 and AHB 5.0 keep the same bus behaviors? If not, what is the difference about them?

Thanks

Regards

E.K.

Top replies

Colin Campbell 6 months ago +1 verified

The allowed use of BUSY transfers has not changed since the first protocol release. The only reason that you see this described in the AHB5 spec and not the original AHB2 is that we had requests to document...