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-rw-r--r--ice40/arch.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/ice40/arch.cc b/ice40/arch.cc
index bfab91a1..abce0aba 100644
--- a/ice40/arch.cc
+++ b/ice40/arch.cc
@@ -938,7 +938,7 @@ TimingPortClass Arch::getPortTimingClass(const CellInfo *cell, IdString port, Id
} else if (cell->type == id_sb_io) {
if (port == id("D_IN_0") || port == id("D_IN_1"))
return TMG_STARTPOINT;
- if (port == id("D_OUT_0") || port == id("D_OUT_1"))
+ if (port == id("D_OUT_0") || port == id("D_OUT_1") || port == id("OUTPUT_ENABLE"))
return TMG_ENDPOINT;
return TMG_IGNORE;
} else if (cell->type == id("ICESTORM_PLL")) {