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ARM Community: AHB-Lite：HBURST and HWRITE signal value after an error response - ARM Community

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AHB-Lite：HBURST and HWRITE signal value after an error response Rate Topic: **--- 1 Votes

#1 User is offline   KAD 

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Posted 19 June 2012 - 06:46 AM

Hi,
I have a question about AHB-Lite master HBURST and HWRITE signal value after the master received error response from the slave.

In that case, HTRANS need to be changed to IDLE if the master will cancel the remaining transfers in accordance with AHB-Lite specification.
I'd like to know whether the master have to keep HBURST and HWRITE signal value or change these value to default.

I think these two signal value are not critical if the master changes HTRANS to IDLE because no transfer will be transferred to the slave.
But I want to confirm the AHB-Lite exact specification.

Best Regards,

S.Kadouchi
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#2 User is offline   JD 

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Posted 19 June 2012 - 09:44 AM

Hi KAD,

If the master is cancelling the burst the HBURST and HWRITE signals can change to any new values you want (the previous burst has now ended), or as this is an IDLE transfer you can leave them as they were to avoid an unnecessary signal change.

JD
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