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Altera_Forum's avatar
Altera_Forum
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16 years ago

Burst boundaries on Frame Buffer

Hi all. I have many questions about the VIP Frame Buffer. if I want to change the base address of the frame buffer, how do I calculate the burst boundaries? and again.. My image is 512*384 w...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Your burst boundary requirements depends on your memory topology. If you are not connecting to a burst wrap slave, you don't really need to worry as much.

However, the simplest way to calculate your burst boundary is multiply the memory width by the burst target (128-bit memory interface with a burst target of 32 would be (16 bytes * 32 words) = 512 bytes. Your burst boundaries are every 512 bytes. If you align on any boundary other than that, you could see out of order memory accesses.

Jake