Input/Output samples are distributed over multiple parallel computation paths, which is controlled by TP_PHASES template parameter.
Stream Processing: Number of phases
TP_PHASES can be increased only when each cascade stream has maximum data rate, i.e., with maximum cascade length (4)To achieve data rate less than 1GSPS, Cascade length parameter can be decreased in a single phase design.
To achieve data rate more than 1GSPS, NUM_PHASES parameter should be increased by keeping
the
TP_CASC_LEN parameter to its maximum possible value (i.e. the value required to achieve 1GSPS when TP_PHASES is equal to 1)