From 16cffb9fbc4ed56d7d3517ddaea6aec08bb993e4 Mon Sep 17 00:00:00 2001
From: Eric Kooistra <kooistra@astron.nl>
Date: Tue, 12 Sep 2023 13:15:22 +0200
Subject: [PATCH] Only rise-rise of link_clk may already be enough.

---
 .../quartus/lofar2_unb2c_sdp_station.sdc                        | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/applications/lofar2/designs/lofar2_unb2c_sdp_station/quartus/lofar2_unb2c_sdp_station.sdc b/applications/lofar2/designs/lofar2_unb2c_sdp_station/quartus/lofar2_unb2c_sdp_station.sdc
index 4023db68f3..e0e0be917c 100644
--- a/applications/lofar2/designs/lofar2_unb2c_sdp_station/quartus/lofar2_unb2c_sdp_station.sdc
+++ b/applications/lofar2/designs/lofar2_unb2c_sdp_station/quartus/lofar2_unb2c_sdp_station.sdc
@@ -133,7 +133,7 @@ set_clock_groups -asynchronous -group [get_clocks {*xcvr_native_a10_0|g_xcvr_nat
 #     <------> = 5 - 0.496 = 4.504 ns --> 222 MHz
 #
 # Idem use same set_clock_uncertainty for fall-fall and fall_rise. Although
-# maybe only the rise-rise constraint is already sufficient.
+# maybe only the rise-rise constraint for link_clk is already sufficient.
 
 # Increase clock uncertainty to force link_clk to have Fmax > 234MHz
 set_clock_uncertainty -rise_from [get_clocks {*|iopll_0|link_clk}] -rise_to [get_clocks {*|iopll_0|link_clk}]  5.727
-- 
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