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common: rfsom: Add constraints for the eth1 rx clock 

Add clock rate constraints for the eth1 rx clock, otherwise the tools
assume the RX paths are unconstrained and creates a bitstream which
violates hold times which causes bit errors on the RX path.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
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Lars-Peter Clausen 2015-06-03 17:17:59 +02:00
parent 91b0f70972
commit 264dbfed35
1 changed files with 3 additions and 0 deletions
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projects/common/rfsom/rfsom_system_constr.xdc
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@ -73,3 +73,6 @@ set_property -dict {PACKAGE_PIN W16 IOSTANDARD LVCMOS25} [get_ports gpio_bd[
set_property -dict {PACKAGE_PIN W15 IOSTANDARD LVCMOS25} [get_ports gpio_bd[10]] ; ## (dip) IO_L24N_T3_12
set_property -dict {PACKAGE_PIN V19 IOSTANDARD LVCMOS25} [get_ports gpio_bd[11]] ; ## (dip) IO_0_13
# clocks
create_clock -period 8.000 -name eth1_rgmii_rxclk [get_ports eth1_rgmii_rxclk]