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Altera_Forum
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12 years ago

Difficulty reading into FPGA SDRAM from HPS

Hi, I am running a slightly modified version of GHRD from rocketboards on my Cyclone V Dev Kit. Right now I am having difficulty trying to read from FPGA SDRAM in Linux, which I connected to ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

I solved this, the reason is timing error (slack too much) :

1. Use afi_clk to drive both h2f axi master and the fifos

2. Use higher frequency on fpga_clk_50 to 125mhz