diff options
| author | Pavel V. Shatov (Meister) <meisterpaul1@yandex.ru> | 2018-09-06 13:21:21 +0300 |
|---|---|---|
| committer | Pavel V. Shatov (Meister) <meisterpaul1@yandex.ru> | 2018-09-06 13:21:21 +0300 |
| commit | 714cf340b135a2b25281a6376168b8fe57c48e6e (patch) | |
| tree | d01dde9074319e989bf7e3bb1f89c4f1dd6fa837 | |
| parent | f8f86f9cfbd0ac73d2b0d3600e424b9c669cea59 (diff) | |
Constraints for 60 MHz FMC_CLK.
| -rw-r--r-- | ucf/alpha_fmc.ucf | 7 |
1 files changed, 6 insertions, 1 deletions
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%; #------------------------------------------------------------------------------- |