AR# 1540

SYNPLIFY: How to convert tristate multiplexers to LUT multiplexers using the syn_tristatetomux attribute?

Description

Keywords: Synplify, VHDL, Verilog, SDC, syn_tristatetomux

Urgency: Standard

General Description:
How to convert tristate multiplexers to LUT multiplexers using
the syn_tristatetomux attribute?

Forces Synplify to analyze each net in your design driven by tri-state
drivers and convert the drivers into a mux. This is done if the number
of tri-states drivers on the net is less than the integer value specified
with this attribute.

Note: All drivers on the nets that could be converted to muxes must
be tri-state drivers, otherwise the conversion fails and a warning is issued.

Solution

SDC
---

define_attribute <top_module> syn_tristatetomux <integer>
AR# 1540
Date 04/24/2007
Status Archive
Type General Article