diff --git a/lib/emac/src/sipo.vhd b/lib/emac/src/sipo.vhd
index ebed385..31b98ab 100644
--- a/lib/emac/src/sipo.vhd
+++ b/lib/emac/src/sipo.vhd
@@ -41,7 +41,7 @@ ARCHITECTURE behavior OF sipo IS
 --------------------------------------------------------------------------
 begin
 
-	pre_fin		<= shift_cnt_pipe(shift_cnt_pipe'left);
+	pre_fin		<= shift_cnt_pipe(shift_cnt_pipe'left) when msb_first else shift_cnt_pipe(0);
 	dout_en		<= out_en;
 	dout_vld	<= out_vld;
 	
@@ -86,9 +86,17 @@ process(clk)
 begin
 	if rising_edge(clk) then
 		if rst = '1' or pre_fin = '1' then
-			shift_cnt_pipe	<= (shift_cnt_pipe'left downto 1 => '0') & din_vld;
+			if (msb_first) then
+				shift_cnt_pipe	<= (shift_cnt_pipe'left downto 1 => '0') & din_vld;
+			else
+				shift_cnt_pipe	<= din_vld & (shift_cnt_pipe'left downto 1 => '0');
+			end if;
 		elsif din_vld = '1' or abort = '1' then
-			shift_cnt_pipe	<= shift_cnt_pipe(shift_cnt_pipe'left-1 downto 0)  & din_vld;
+			if (msb_first) then
+				shift_cnt_pipe	<= shift_cnt_pipe(shift_cnt_pipe'left-1 downto 0)  & din_vld;
+			else
+				shift_cnt_pipe	<= din_vld & shift_cnt_pipe(shift_cnt_pipe'left downto 1);
+			end if;
 		end if;
 	end if;
 end process;