Microblaze + DDR on a Spartan 3E starter kit

[alsig]

Hi,

Is it possible to make the microblaze use the DDR memory on the Spartan 3E starter Kit from Xilinx? I have attempted to use the OPB DDR controller and the MCH_OBP DDR controller by every time it fails. As a test I use the EDK-generated memory test.

Are there any particularly parameters that I have to pay extra attention to?

Does somebody have a guide or a "Howto"?

Best Regards
Jens R. Alsig

 

[benradu]

Try to make your first design minimal, no EMAC for example.
Then make sure the configuration jumpers (J30) are set for JTAG (0:1:0) and then power down and power up the board. It is a known bug that if the FPGA is already loaded with a design (the initial design for example) the iMPACT fails to correctly program your new design.

 

[alsig]

Then make sure the configuration jumpers (J30) are set for JTAG (0:1:0) and then power down and power up the board. It is a known bug that if the FPGA is already loaded with a design (the initial design for example) the iMPACT fails to correctly program your new design.

Thanks this helped. Now the memory test passed.

Jens