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authorPavel V. Shatov (Meister) <meisterpaul1@yandex.ru>2018-09-06 13:21:21 +0300
committerPavel V. Shatov (Meister) <meisterpaul1@yandex.ru>2018-09-06 13:21:21 +0300
commit714cf340b135a2b25281a6376168b8fe57c48e6e (patch)
treed01dde9074319e989bf7e3bb1f89c4f1dd6fa837 /ucf
parentf8f86f9cfbd0ac73d2b0d3600e424b9c669cea59 (diff)
Constraints for 60 MHz FMC_CLK.
Diffstat (limited to 'ucf')
-rw-r--r--ucf/alpha_fmc.ucf7
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%;
#-------------------------------------------------------------------------------