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Visitor daniel_leu
Visitor
11,040 Views
Registered: ‎08-05-2015

AxUSER with AXI Interconnect

I am creating a block design and use the AXI Interconnect (2.1) as the local bus network. My custom blocks require the AxUSER sideband signals. But when I create the interconnect, the AxUSER signals are not routed!

 

How can I get the AXI Interconnect to use the ARUSER and AWUSER sideband signals?

 

This is with Vivado 2015.4 

 

Thank you for your help!

 

- Daniel

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Visitor daniel_leu
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10,759 Views
Registered: ‎08-05-2015

Re: AxUSER with AXI Interconnect

As soon as an interface port has a different data width than the AXI Crossbar, AxUSER is ignored. In my example, I have ports that are 64-bits and others that are 32-bit. Depending on the width of the AXI Crossbar, either the 32-bit or the 64-bit ports use AxUSER, but not both!

 

It looks like the AXI Data Width Converter does not support user sideband signals! Is this a bug or a feature? 

 

Thanks!

- Daniel

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