Synthesis results for the PDEC3AMBA (without I/O insertion):
=====================================================================
Xilinx Virtex-E 200, -6     | Actel RT54SX72, -1
------------------------------+-------------------------------
LUT        | FF         | MHz | COMB       | SEQ        | MHz
-----------+------------+-----+------------+------------+-----
5877       | 3241       | 31  | 10657      | 3714       | 17

Target frequency is 20 MHz