diff --git a/litex/boards/targets/nexys_video.py b/litex/boards/targets/nexys_video.py
index ad78f538f..6bd011ecb 100755
--- a/litex/boards/targets/nexys_video.py
+++ b/litex/boards/targets/nexys_video.py
@@ -42,6 +42,7 @@ class _CRG(Module):
         pll.create_clkout(self.cd_sys4x, 4*sys_clk_freq)
         pll.create_clkout(self.cd_sys4x_dqs, 4*sys_clk_freq, phase=90)
         pll.create_clkout(self.cd_clk200, 200e6)
+        pll.create_clkout(self.cd_clk100, 100e6)
 
         self.submodules.idelayctrl = S7IDELAYCTRL(self.cd_clk200)