diff --git a/projects/adv7511/kcu105/system_constr.xdc b/projects/adv7511/kcu105/system_constr.xdc
new file mode 100644
index 000000000..d6b4de248
--- /dev/null
+++ b/projects/adv7511/kcu105/system_constr.xdc
@@ -0,0 +1,28 @@
+
+# hdmi
+
+set_property -dict  {PACKAGE_PIN  AF13  IOSTANDARD  LVCMOS18} [get_ports hdmi_out_clk]
+set_property -dict  {PACKAGE_PIN  AE13  IOSTANDARD  LVCMOS18} [get_ports hdmi_hsync]
+set_property -dict  {PACKAGE_PIN  AH13  IOSTANDARD  LVCMOS18} [get_ports hdmi_vsync]
+set_property -dict  {PACKAGE_PIN  AE11  IOSTANDARD  LVCMOS18} [get_ports hdmi_data_e]
+set_property -dict  {PACKAGE_PIN  AK11  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[0]]
+set_property -dict  {PACKAGE_PIN  AP11  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[1]]
+set_property -dict  {PACKAGE_PIN  AP13  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[2]]
+set_property -dict  {PACKAGE_PIN  AN13  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[3]]
+set_property -dict  {PACKAGE_PIN  AN11  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[4]]
+set_property -dict  {PACKAGE_PIN  AM11  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[5]]
+set_property -dict  {PACKAGE_PIN  AN12  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[6]]
+set_property -dict  {PACKAGE_PIN  AM12  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[7]]
+set_property -dict  {PACKAGE_PIN  AL12  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[8]]
+set_property -dict  {PACKAGE_PIN  AK12  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[9]]
+set_property -dict  {PACKAGE_PIN  AL13  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[10]]
+set_property -dict  {PACKAGE_PIN  AK13  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[11]]
+set_property -dict  {PACKAGE_PIN  AD11  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[12]]
+set_property -dict  {PACKAGE_PIN  AH12  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[13]]
+set_property -dict  {PACKAGE_PIN  AG12  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[14]]
+set_property -dict  {PACKAGE_PIN  AJ11  IOSTANDARD  LVCMOS18} [get_ports hdmi_data[15]]
+
+# spdif
+
+set_property -dict  {PACKAGE_PIN  AE12  IOSTANDARD  LVCMOS18} [get_ports spdif]
+