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5982 Discussions

can I turn off the auto-refresh in the DDR2 controller with ALTMENPHY

Altera_Forum
Honored Contributor II
998 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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3 Replies
Altera_Forum
Honored Contributor II
84 Views

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

Altera_Forum
Honored Contributor II
84 Views

 

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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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yes I have tryed that. but it makes no difference.
Altera_Forum
Honored Contributor II
84 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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