Forum Discussion

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

Bandwidth Calculation of PCIe data Transfer for arria II speed -x1

Hi, i want to know what is the bandwidth of PCIe data transfer for ARRIA II GX FPGA Board with the Chained DMA Example provided by Altera.When testing with the GUI(which has Jungo drivers for PCIe...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Hi,

I am using Chained DMA Engine example of Altera, which tested for DMA read (PC reading data from FPGA)shows speed as 178MB/s.But the write enables generated by DMA Example is very less i.e 25k/sec. so total throuput comes to 25k *64 Bits =1.6 Mbits/sec.

So which is the correct speed?