User guide

362 www.xilinx.com System Generator for DSP User Guide
UG640 (v 12.2) July 23, 2010
Chapter 4: Importing HDL Modules
3. Reduce the number of bits on the gateway Din Gateway In from 16 bits down to 12
and the binary point from 14 to 10, then run the simulation again. Note that both the
input and output widths on the black box adjust automatically. The black box
subsystem and simulation results should look like those shown below.