diff --git a/lib/radio/ddc/src/syn_ddc.vhd b/lib/radio/ddc/src/syn_ddc.vhd
index c442720..4f130bd 100644
--- a/lib/radio/ddc/src/syn_ddc.vhd
+++ b/lib/radio/ddc/src/syn_ddc.vhd
@@ -27,8 +27,8 @@ use work.cordic_pkg.all;
 	ENTITY syn_ddc IS
 	Generic 
 	(
-		nbits_in			: integer := 18;
-		nbits_in_frac		: integer := 16;
+		nbits_in			: integer := 16;
+		nbits_in_frac		: integer := 14;
 		nbits_out			: integer := 24;
 		nbits_out_frac		: integer := 22;
 		lo_nbits_phase		: integer := 20;