Page 352 - DSP Integrated Circuits

7.10 Interpolator, Cont. 337

Figure 7.77 Lifetime table for memory variables

The lifetime table has been folded modulo(48T/^). The horizontal lines represent
storage of variables and their numbers correspond to the adaptor numbers. The
wave-flow graph contains a number of multiplications by —1. These multiplications
can easily be performed when the corresponding values are either written to or
read from the memories.
The operation of the memory is as follows: First the result from a PE is
written into the memory before the operands to the subsequent operation are read