Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
16219 Discussions

Modular SGDMA

shershenuk_ra
Beginner
‎09-30-2021 06:16 AM
356 Views

Hi, everyone! I am planning to use Modular Scatter-Gather DMA in streaming to memory-mapped mode. What happens if descriptor requests specific data size, but input FIFO does not have enough data? Will descriptor processing be paused? Or will DMA return less data than was requested?

0 Kudos

Link Copied

1 Reply
SyafieqS
Moderator
‎10-20-2021 06:24 AM
252 Views

Roman,


You may need to take a look at below information related to mSGDMA operation

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_embedded_ip.pdf#page=340



0 Kudos
Copy link
Reply

Community support is provided during standard business hours (Monday to Friday 7AM - 5PM PST). Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.