hello, I just check the speed of data transfer between ps and pl.
I use AXI-Stream interface with DMA Module.
I made a simple module that takes data from the dram and stores it back in the dram.
And I check transfer speed with various burst width and TDATA width.
This is my result.
I use pynq-z2 board and, I give 525Mhz to DDR in ps’ clock configuration option.
Also, I give 100Mhz to axi DMA module.
Is there a way to send and receive data faster than the current speed?
Thank you.
The High Performance (HP) interfaces in the Zynq device supports 32 and 64 bit data width. To maximize performance, you should select 64-bit. With that in mind, the maximum theoretical performance you can get will depend on the clock frequency in the PL side. max performance = data_width * clock_frequency
In your particular case 64-bit * 100 MHz = 6.4 Gbit/s (800 MB/s).
Is there a way to send and receive data faster than the current speed?
Increase the PL clock frequency.
Mario
Thank you for your kind reply!
