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Altera_Forum's avatar
Altera_Forum
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17 years ago

local_size in DDR2

Hi, I can pulse data through the DDR2 (native) controller, but I wonder if I can do burst reads and writes. While looking at the diagram on the DDR and DDR2 Compiler User Guide, I see in t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Hi,

Since local bus width is twice as much as ddr2 bus width, the local size is half of ddr2 burst length. So if you set burst length as two in the megawizard, local size is always one. Then the bit width of local size is one. Setting burst length as four, you can choose one or two for local size.

Thanks