FPGA link to external memory

Question

I am trying to use the cellular ram on the Nexys 4 FPGA development board. I am using Xilinx Vivado and would like a Microblaze soft core processor to be able to perform reads and writes. So far I have created the processor in a block design.

After much hunting through the internet I eventually found an external memory controller or EMC which I thought looked promising. How would I go about connecting the Ram up? I have created a HDL wrapper and tried connecting the ports of the EMC to the pins of the ram, however, there are more ports than I need. I can't find any examples of the Nexys 4 or for the Vivado EMC.

I also found that the Nexys 2 has an example of an onboard memory controller. I see that the part number is the same for the RAM. Would this be usable and how would I use it in conjunction with the Mircoblaze?

Answer 1

Sometimes manufacturers don't provide all of the details in a datasheet. There are a few things to do if you can't find the info you need.

1) Check the product page for additonal resources
2) Check for app notes or tech notes on the product or product family
3) Search horizontally for similar products on the manufactures site or other manufacturers sites for relevant information

Micron cellular ram is a replacement to SRAM.. The routing should be simmilar to SRAM routing because it runs at the same speeds. Here is a guide for all micron routing information

There is also an HDL file on their product page for interfacing in HDL and they have IBIS files for simulating.