From 714cf340b135a2b25281a6376168b8fe57c48e6e Mon Sep 17 00:00:00 2001 From: "Pavel V. Shatov (Meister)" Date: Thu, 6 Sep 2018 13:21:21 +0300 Subject: Constraints for 60 MHz FMC_CLK. --- ucf/alpha_fmc.ucf | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/ucf/alpha_fmc.ucf b/ucf/alpha_fmc.ucf index efefa76..7926762 100644 --- a/ucf/alpha_fmc.ucf +++ b/ucf/alpha_fmc.ucf @@ -49,7 +49,12 @@ # FMC_CLK Timing (can be up to 90 MHz) #------------------------------------------------------------------------------- NET "fmc_clk" TNM_NET = TNM_fmc_clk; -TIMESPEC TS_fmc_clk = PERIOD TNM_fmc_clk 11.111 ns HIGH 50%; + +# 90 MHz +#TIMESPEC TS_fmc_clk = PERIOD TNM_fmc_clk 11.111 ns HIGH 50%; + +# 60 MHz +TIMESPEC TS_fmc_clk = PERIOD TNM_fmc_clk 16.667 ns HIGH 50%; #------------------------------------------------------------------------------- -- cgit v1.2.3