Table of Contents
Advertisement
Figure 3-60: Mult block parameters dialog box - sequential type
Parameters specific to the Mult block are:
Other parameters used by this block are explained in the Common Parameters section
of the previous chapter.
Xilinx LogiCORE
The Mult block always uses Xilinx LogiCORE: Multiply Generator V4.0.
The Core datasheet can be found on your local disk at:
%XILINX%\coregen\ip\xilinx\eip1\com\xilinx\ip\mult_gen_v4_0\do
c\mult_gen.pdf
Math
Multiplier Type: directs the implementation to be either parallel or
sequential.
Require Maximum Pipelining: directs the core to be pipelined to the fullest
extent possible.
Use Dedicated High-Speed Multipliers: when checked, directs the core
to use embedded multipliers (available in Virtex-II only, and when the multiplier
type is parallel).
Hardware Over-Sampling Rate: specifies the number of hardware cycles per
input sample; does not affect behavior in simulation, only the hardware
implementation.
Use Placement Information for Core: allows specification of placement
layout shape that will be used when implementing the core in hardware
Placement Style: specifies the layout shape in which the multiplier core will
be placed in hardware. The Rectangular option will generate a rectangular placed
core with loosely placed LUTs. Triangular packing will create a more compact
shape, with denser placement of LUTs.
Xilinx Blocks
89
Advertisement
Table of Contents
