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  4. AR# 59914: RXAUI v4.1 - Additional XDC constraints for the MDIO signal inputs to ease timing closure

AR# 59914

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

描述

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

解决方案


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
日期 04/17/2014
状态 Active
Type 综合文章
IP
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