diff --git a/lib/lpp/dsp/iir_filter/RAM_CTRLR_v2.vhd b/lib/lpp/dsp/iir_filter/RAM_CTRLR_v2.vhd
--- a/lib/lpp/dsp/iir_filter/RAM_CTRLR_v2.vhd
+++ b/lib/lpp/dsp/iir_filter/RAM_CTRLR_v2.vhd
@@ -108,21 +108,13 @@ BEGIN
   BEGIN  -- PROCESS
     IF rstn = '0' THEN                  -- asynchronous reset (active low)
       counter           <= (OTHERS => '0');
-      rst_mem_done_s    <= '0';
+      rst_mem_done_s    <= '1';
     ELSIF clk'EVENT AND clk = '1' THEN  -- rising clock edge
-      if rst_mem_done_s = '0' then
+      IF raddr_rst = '1' THEN
+        counter <= (OTHERS => '0');
+      ELSIF raddr_add1 = '1' THEN
         counter <= STD_LOGIC_VECTOR(UNSIGNED(counter)+1);
-      else
-        IF raddr_rst = '1' THEN
-          counter <= (OTHERS => '0');
-        ELSIF raddr_add1 = '1' THEN
-          counter <= STD_LOGIC_VECTOR(UNSIGNED(counter)+1);
-        END IF;
-      end if;
-      if counter = x"FF" then
-        rst_mem_done_s <= '1';
-      end if;
-      
+      END IF;
     END IF;
   END PROCESS;
   RADDR <= counter;