FPGA Intellectual Property
PCI Express*, Networking and Connectivity, Memory Interfaces, DSP IP, and Video IP
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can I turn off the auto-refresh in the DDR2 controller with ALTMENPHY

Altera_Forum
Honored Contributor II
‎03-19-2014 08:28 AM
1,160 Views

Hi all, 

I am working on a video frame buffer which is using the cyclone 4E FPGA and the altera megafunction DDR2 SDRAM controller with ALTMENPHY. 

I am dealing with the streaming video data, thus I don't need the auto-refresh function in the DDR2 controller. is it possible to turn it off so that I may save some bandwidth? 

 

Thanks 

Daniel
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Altera_Forum
Honored Contributor II
‎03-19-2014 08:59 AM
246 Views

Did you read the user manual? I think you'll set USER_REFRESH_EN to true and never request a refresh.

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Altera_Forum
Honored Contributor II
‎03-19-2014 09:27 AM
246 Views

 

--- Quote Start ---  

Did you read the user manual? I think you'll set USER_REFRESH_EN to true and never request a refresh. 

--- Quote End ---  

 

yes I have tryed that. but it makes no difference.
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Altera_Forum
Honored Contributor II
‎03-19-2014 10:17 AM
246 Views

It may be the case that parameter isn't passed to the hp_controller instance. May be you need to edit the wrapper instance generics manually.

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