Honored Contributor
Honored ContributorHi Kevin, I thought about your suggestion and I am now unsure if this is possible without changing the hardware. The system I am working with is predefined, so I could not change the bandwith as you suggest I think, but perhaps I am missunderstanding the concept of the sdram. I made a sketch, how I understand it, based on http://www.altera.com/literature/ug/ug_embedded_ip.pdf chapter 1-9.
In the attachement, you see the FB attached to the SDRAM Controller, by two Avalon-MM Interfaces. In my opinion this is a place where I could raise the datawidth in this constellation, but I don't expect any positive changes in this alternation without making canges at the controller. The SDRAM controller accesses now with a datawidth of 32bit, 2 chipselect and 4 banks. 13 rows and 9 colum addresswidth. Do you mean to increase the datawith to 64bit and then use 2 chipselects while using 2 banks? Could that work? Am I correct, that I then would need two SDRAM Memory Chip that are both 32bit data width devices? So when I want to still work with the 4 banks I would have to use 64bit datawidth for the controller, 1 chipselect and 4 banks. The controller would then access 64bit at once everytime. Then I will have to change my whole system to process 64bit words, that inherit two 32bit words of my videodata everytime, so I would have doubled the overall bandwidth. Yours, Peter.
