Critical Issue
Description
When using the Arria® 10, 10G Multi-rate Ethernet PHY - Lineside IP core you may see hold timing violations for the data transfer from alt_mge16_phy_xcvr_term module to the Native PHY transceiver on the TX data path.
Resolution
To work around this issue, over-constrain the failing path by adding following timing constraints into user top level Synopsis Design Constraint(.sdc) file.
if { [string equal "quartus_fit" $::TimeQuestInfo(nameofexecutable)] } {
set_min_delay -from [get_registers *alt_mge16_phy_xcvr_term:*|*] -to [get_registers *twentynm_xcvr_native:*|twentynm_pcs_*] 0.3ns
}
This issue will be fixed in a future release of the Quartus® II software.