diff --git a/libraries/technology/ddr/tech_ddr_pkg.vhd b/libraries/technology/ddr/tech_ddr_pkg.vhd
index efd9d4c4353865f75010acca76188434c24701e0..dd82d7973d016be3e887c5362f09abf9a7b7c085 100644
--- a/libraries/technology/ddr/tech_ddr_pkg.vhd
+++ b/libraries/technology/ddr/tech_ddr_pkg.vhd
@@ -147,7 +147,10 @@ PACKAGE tech_ddr_pkg IS
     burstbegin         : STD_LOGIC;
     burstsize          : STD_LOGIC_VECTOR(c_tech_ddr_max.maxburstsize_w-1 DOWNTO 0);
   END RECORD;
-    
+  
+  CONSTANT c_tech_ddr_miso_rst : t_tech_ddr_miso := ((OTHERS=>'0'), '0', '0');
+  CONSTANT c_tech_ddr_mosi_rst : t_tech_ddr_mosi := ((OTHERS=>'0'), (OTHERS=>'0'), '0', '0', '0', (OTHERS=>'0'));
+  
 END tech_ddr_pkg;
 
 PACKAGE BODY tech_ddr_pkg IS