Forum Discussion

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

Using Avalon ST packet transfer with SGDMA

Hi, I am creating a component between custom hardware and the SGDMA controller. The descriptors of the SGDMA are setup to transfer a large number of bytes at a time (24000 bytes) from the cus...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

If you send less than 24000 bytes before the end of packet, the transfer will end if you enabled the "use start/end of packet" option (don't remember the exact name). You can also set the length to 0 to disable size check.

You should use burst transfer if you have a (DDR)SDRAM with a controller that supports it, and if you need the speed.