AR# 59914

RXAUI v4.1 - Additional XDC constraints for the MDIO signal inputs to ease timing closure

Description

Additional false path constraints can be added to the MDIO logic to ease timing closure.

Solution


Add the following constraints:
##################################################################
# set a false path from the mdc_in and mdc_in inputs to the first
# stage of the sychronizer register
set_false_path -to [get_cells -hierarchical -filter {NAME =~ */core_name_core/*management_1/mdc_reg_reg[0]}]
set_false_path -to [get_cells -hierarchical -filter {NAME =~ */core_name_core/*management_1/mdio_in_reg_reg[0]}]

These have been added to the core XDC file in 2014.1.
AR# 59914
Date 04/17/2014
Status Active
Type General Article
IP