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10 years ago

BEMICROMAX10 and the provided SDRAM in Qsys - ROWS COLUMNS AND TIMING !

I am doing my first memory card project, doing the SLS evaluation for the SD/eMMC card IP. Would like to get a roll on this. When i am in Qsys plugging in the ram info the amount of system ram is drastically different from what i am expecting.

The ram on the arrow website (where i bought the bemicromax10 from) is IS42S16400 . Here is that data sheet

http://www.issi.com/WW/pdf/42S16400.pdf

The data sheet proclaims that " Each 16,777,216-bit bank is organized as 4,096rows by 256 columns by 16 bits."

The 64Mb (8MB) ram is supposed to be what is on the board.

The data sheet also does proclaim that "Internallyconfigured as a quad-bank DRAM with a synchronousinterface."

When i plug this into Qsys it spits out back at the bottom "0 Megabytes"

http://www.alteraforum.com/forum/attachment.php?attachmentid=11730&stc=1

please do take note that i am using the Avalon Sd-Ram Controller .

I am following the SLS pdf on setting up this system for the SD/eMMC card Host Controller. I would post the PDF if i could as it is outdated (wants me to do it in cyclone IV or III , i forget which) but the IP claims that it is good for MAX10

Thanks ! Also if someone could help me decipher what to put in for the timing, i would be grateful !

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