Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

General question about DDR2 megafunction IP

Hello, I am new to FPGA design and I need to use the DDR2 Megacore Controller. I read the user guide and other documentation i found but I don't understand everything... I have Altera PC...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Thanks for reply.

Do someone have stratix II pci express development kit ?

Some features are not clear. I explain:

Datasheet of dev kit say the board have 256 MB of DDRII Ram.

But on the "real" board, I have 5 chips of 64 MB each (4 x 32 Mwords of 16 bits + 1 x 64 Mwords of 8 bits). So the board has actually 320 MB ???

Moreover, when I calculate accessible data space :

- 288 bits data bus width

- 23 bits address lines (2^23 = 8192)

- 8192 x 288 bits = 288 MB....

I need help I think... :confused: