Added a parameter for option SDR / DDR mode, added a parameter for parallel data width. Note: default IF_TYPE is SDR and default PARALLEL_WIDTH is 8
Add additional IDELAY block before the ISERDES. Delet the IDDR blocks. Be aware, the ISERDES block are running in DDR mode. If the interface is SDR the maximum parallel data width is 4.
A generic serdes module for input interface, support both 6 and 7 series.