diff --git a/rtl/MeanIntp_8.v b/rtl/MeanIntp_8.v
index 50912c8..71e59e8 100644
--- a/rtl/MeanIntp_8.v
+++ b/rtl/MeanIntp_8.v
@@ -144,6 +144,17 @@ reg  signed  [15:0]  mux_p_6;
 reg  signed  [15:0]  mux_p_7;
 
 always@(posedge clk)  begin
+    if(!rstn)  begin
+                 mux_p_0  <=  16'h0;
+                 mux_p_1  <=  16'h0;
+                 mux_p_2  <=  16'h0;
+                 mux_p_3  <=  16'h0;
+                 mux_p_4  <=  16'h0;
+                 mux_p_5  <=  16'h0;
+                 mux_p_6  <=  16'h0;
+                 mux_p_7  <=  16'h0;  
+    end 
+    else  if(en)  begin
     case(intp_mode)
     2'b00:
         begin
@@ -200,8 +211,18 @@ always@(posedge clk)  begin
                  mux_p_6  <=  16'h0;
                  mux_p_7  <=  16'h0;          
         end
-
     endcase
+    end
+    else  begin
+                 mux_p_0  <=  mux_p_0;
+                 mux_p_1  <=  mux_p_1;
+                 mux_p_2  <=  mux_p_2;
+                 mux_p_3  <=  mux_p_3;
+                 mux_p_4  <=  mux_p_4;
+                 mux_p_5  <=  mux_p_5;
+                 mux_p_6  <=  mux_p_6;
+                 mux_p_7  <=  mux_p_7;         
+    end
 end
 
 assign dout_0 = mux_p_0[15:0];