+ TDD pointers and counter width is 24
+ Change TDD control ports name to 'enable' and 'txnrx'
+ Fix constraints
+ Rx or Tx only mode is controlled by a mode enable and a operation mode specifier bit
+ Delete unnecessary registers
+ Add the module ad_addsub.v to resolve additions and subtractions inside TDD control
+ Redefine the burst logic
+ Redesign the control signal generations
+ Note: This patch fix the TDD related timing violations
Istvan Csomortani