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Mentor
Mentor
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Registered: ‎10-07-2011

[BD 41-237] Bus Interface property FREQ_HZ does not match

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Hi folks,

 

I'm migrating an ISE/EDK design to Vivado/IPIntegrator (2013.4, Win7-64) and get the following errors:

 

[BD 41-237] Bus Interface property FREQ_HZ does not match between /axi4_0/s01_couplers/auto_us_df/S_AXI(200MHz) and /microblaze_0/M_AXI_DC(100MHz)
[BD 41-237] Bus Interface property FREQ_HZ does not match between /axi4_0/s00_couplers/auto_us_df/S_AXI(200MHz) and /microblaze_0/M_AXI_IC(100MHz)

 

As shown in the attched BD snapshot, the Microblaze is clocked at 100MHz and the AXI4 Interconnect and MIG are clocked at 200MHz. Both clocks are in phase and generated from the same MMCM. That was working in ISE/EDK. I guess there was some automatic clock crossing management stuff that went away in the IPIntegrator version.

 

What can I do?

 

Thanks!

 

Claude

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Mentor
Mentor
5,903 Views
Registered: ‎10-07-2011

OK, found it!

 

In IPIntegrator, there is an "AXI Clock Converter" IP that must be inserted to resolve that issue.

 

Claude

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Highlighted
Mentor
Mentor
5,904 Views
Registered: ‎10-07-2011

OK, found it!

 

In IPIntegrator, there is an "AXI Clock Converter" IP that must be inserted to resolve that issue.

 

Claude

View solution in original post

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