Device Family: Intel® Stratix® 10 GX, Intel® Stratix® 10 MX, Intel® Stratix® 10 SX, Intel® Stratix® 10 TX

Intel Software: Quartus Prime Pro

Type: Answers

Area: Intellectual Property


Last Modified: June 19, 2020
Version Found: v19.1
Bug ID: 1508019250
IP: 25G 50G Ethernet, 25G Ethernet

Why is the rx_am_lock port in the 25G Ethernet Intel® FPGA IP always low when the channel is reconfigured to 10G?

Description

Due to the different architecture between 10G and 25G mode in the 25G Ethernet Intel® FPGA IP, after the channel has been reconfigured to 10G,  the port rx_am_lock does not behave the same as when the IP is operating in 25G mode.

rx_am_lock will output constant 0 when the channel switches from 25G to 10G mode. 

Workaround/Fix

This problem is not scheduled to be fixed.