# AHB 128-bit read error on MIG by GRMON

**URL:** <https://discourse.grlib.community/t/ahb-128-bit-read-error-on-mig-by-grmon/170>\
**Category:** General - GRLIB SoC\
**Created:** [5 July 2021 07:15 UTC](https://discourse.grlib.community/t/ahb-128-bit-read-error-on-mig-by-grmon/170 "2021-07-05T07:15:13Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![WEI](https://avatars.discourse-cdn.com/v4/letter/w/90ced4/32.png) [@WEI](https://discourse.grlib.community/u/WEI)\
**Post date:** [5 July 2021 07:15 UTC](https://discourse.grlib.community/t/ahb-128-bit-read-error-on-mig-by-grmon/170/1 "2021-07-05T07:15:13Z")

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GRMON had data reading errors on MIG in 128-bit AHB configuration, but no error in 32/64-bit AHB configuration, and no error on AHBRAM in any width AHB configuration.

The test is shown in the following image, As you see it, the problem seems to be with GRMON.

 ![sshot](https://europe1.discourse-cdn.com/flex017/uploads/grlib/original/1X/e24775ed918c610eda88fa8f1f7386a8a331e9f1.png)

I need your help, thanks in advance.

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**Author:** ![nils](https://avatars.discourse-cdn.com/v4/letter/n/d6d6ee/32.png) [@nils](https://discourse.grlib.community/u/nils)\
**Post date:** [6 July 2021 17:00 UTC](https://discourse.grlib.community/t/ahb-128-bit-read-error-on-mig-by-grmon/170/2 "2021-07-06T17:00:31Z")

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Hi,  
Are you using one of our template designs?  
It would help if I know which board (and MIG implementation) you are using.  
How can I reproduce this?

Regards,  
Nils

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**Author:** ![WEI](https://avatars.discourse-cdn.com/v4/letter/w/90ced4/32.png) [@WEI](https://discourse.grlib.community/u/WEI)\
**Post date:** [10 July 2021 08:32 UTC](https://discourse.grlib.community/t/ahb-128-bit-read-error-on-mig-by-grmon/170/3 "2021-07-10T08:32:44Z")

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Hi Nils, Thanks for your help.

I built my own design for my board based on the ‘noelv-xilinx-vc707’ template.  
The AHB interface for Xilinx Virtex-7 MIG is ‘lib/gaisler/ddr/ahb2mig\_7series.vhd’.

I’ll also try to troubleshoot the problem with ahb2axi\_mig\_7series.

Best regards,  
WEI

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**Author:** ![WEI](https://avatars.discourse-cdn.com/v4/letter/w/90ced4/32.png) [@WEI](https://discourse.grlib.community/u/WEI)\
**Post date:** [12 July 2021 16:16 UTC](https://discourse.grlib.community/t/ahb-128-bit-read-error-on-mig-by-grmon/170/4 "2021-07-12T16:16:31Z")

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The ‘ahb2axi\_mig\_7series’ passed the test, and the problem seems to be returning to ‘ahb2mig\_7series’.