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Altera_Forum
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10 years ago

Arria10 HPS Fpga to Sdram cannot be configured above 64 bits

Hi All, I want to use the fpga to sdram path in Arria 10 HPS. I want to connect a 256bit AXI interface operating at 125 Mhz from a third party IP to this port. I had a couple of questions: ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Hi All,

Thanks for the replies. I have come to a conclusion that the FPGA2SDRAM path cannot go above 64 bit for 10AS066N3F40I2sGes device that is there oon the Arria10 Soc development Kit. So as of now I will be using FPGA2HPS path. I think this will give me the same performance as a 128bit FPGA2SDRAM path. Later if atera comes up with another version of board which has a problem free device, I will update my design accordingly. I also checked the design that are available on Rocket boards and you will see that eve if they say that this design is for Arroa10 soc development board, they don't use the correct device number to make those designs. You can check this design for example http://rocketboards.org/foswiki/view/projects/arria10pcierootportwithmsi.

So the FPGA on this Arria10 SOC development board will never get programmed if you directly use the sd/card image that they provide.