Arria V PCIe hard IP

Altera_Forum · ‎05-22-2017

Hello everbody, I need help about PCIe configuration.

I work with arria V and i use PCIe hard IP.

My question is , we can have PCIe soft IP in Arria V ?

and my last question is we can drive in FPGA the input signal pin_perst of PCIe ?

thanks

Altera_Forum · ‎05-22-2017

What is your reason for going to soft IP?

Altera_Forum · ‎05-24-2017

Because in the final card of my project i have affected the wrong signal for the reset pine and the final card is already been manufactured.

So i have to move the reset pine in the arria 5 but it is impossible because this pin is dedicated pine.

I thought if i use SOFT core i can chose the all pine who will use the PCIe.

sorry my english is not very good , i don't know if you understand.

thanks for your time.

Altera_Forum · ‎10-23-2017

For Arria V device, the mapping of nPERST is as below:

- nPERSTL0 --> bottom Hard IP of pin_perst

- nPERSTL1 --> top Hard IP of pin_perst

In your case, try workaround it by changing to use Soft Reset Controller.

Using Soft Reset Controller doesn't required the connection to pin nPERSTL0. Tie pin_perst to 1 at top level file and nPERSTL0 can be left unconnected at pin assignment.

Steps to switch to soft reset controller in Qsys:

1) Edit the .qsys file

2) Search for the string 'force_src'

3) Set parameter force_src to 1:

4) Save the changes to the .qsys file and regenerate the Qsys system.

5) Use npor input to reset the core and application logic.