Device Family: Intel® Stratix® 10, Intel® Stratix® 10 TX

Intel Software: Quartus Prime Pro

Type: Answers

Area: Intellectual Property


Last Modified: September 17, 2018
Version Found: v18.1
Bug ID: FB: 587845;

Why does the E-tile Hard IP for Ethernet Intel® FPGA IP change my Ethernet rate from 10G to 25G when I enable RSFEC in Intel® Quartus® Prime Pro software version 18.1?

Description

When using Intel® Quartus® Prime Pro software version 18.1, and selecting '1 to 4 10GE/25GE with optional RSFEC' or '100GE or 1 to 4 10GE/25GE with optional RSFEC and 1588 PTP' core variants for the E-tile Hard IP for Ethernet Intel® FPGA IP, the 'Select Ethernet Rate' parameter will be automatically switched from 10G to 25G when the 'Enable RSFEC' parameter is enabled.

 

The E-tile Hard IP for Ethernet Intel® FPGA IP do not have RSFEC support for any variant with 10G channels.

Workaround/Fix

Users are advised not to select the "Enable RSFEC" option in 10G Ethernet rates as 10G speed mode is not supported in this core variant. Please refer to E-Tile Hard IP for Ethernet Intel® FPGA IP User Guide, figure 1, for supported variants of the IP.