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common: a10soc: Set IO standard for differential signal negative side 

While things seem to work fine with only specifying the the IO standard for
the positive side of differential signals Quartus will issue a warning
about incomplete constraints if the IO standard is not specified for the
the neagtive side as well. To avoid these warnings add the missing
constraints.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
main
Lars-Peter Clausen 2017-07-28 11:48:51 +02:00
parent 5ffd1e1bac
commit 2c83cfff7e
1 changed files with 2 additions and 0 deletions
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2
projects/common/a10soc/a10soc_system_assign.tcl
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@ -5,6 +5,7 @@ set_location_assignment PIN_AM10 -to sys_clk
set_location_assignment PIN_AL10 -to "sys_clk(n)"
set_location_assignment PIN_AV21 -to sys_resetn
set_instance_assignment -name IO_STANDARD LVDS -to sys_clk
set_instance_assignment -name IO_STANDARD LVDS -to "sys_clk(n)"
set_instance_assignment -name IO_STANDARD "1.8 V" -to sys_resetn
# hps-ddr4 (32)
@ -13,6 +14,7 @@ set_location_assignment PIN_F25 -to hps_ddr_ref_clk
set_location_assignment PIN_G24 -to "hps_ddr_ref_clk(n)"
set_instance_assignment -name IO_STANDARD LVDS -to hps_ddr_ref_clk
set_instance_assignment -name IO_STANDARD LVDS -to "hps_ddr_ref_clk(n)"
set_instance_assignment -name INPUT_TERMINATION DIFFERENTIAL -to hps_ddr_ref_clk -disable
set_location_assignment PIN_B20 -to hps_ddr_clk_p