User guide

60 www.xilinx.com System Generator for DSP Getting Started Guide
UG639 (v 14.3) October 16, 2012
Chapter 4: Getting Started
System Generator RAM Blocks
System Generator provides both a single- and dual-port RAM block. Depths up to 64K are supported. Both
Distributed RAM and Block RAM implementation options are available. System Generator calls the Xilinx memory
compiler to create an efficient memory structure in hardware for the given parameters, bit widths and depths. You
don’t need to be concerned with the hardware details of the specific Virtex® block or Distributed RAM structure.
Both the single- and dual-port RAM blocks support initialization. The signal connected to the address port of a
RAM must be unsigned with no fractional bits.