com.xilinx.rapidwright.eco

Class LUT1InsertionTool

Object

com.xilinx.rapidwright.eco.LUT1InsertionTool

public class LUT1InsertionTool
extends Object

Helper class when instantiating designs in an abstract/DFX shell. LUT1s must be used to tie of any shell outputs.

Constructor Summary

Constructors

Constructor and Description
LUT1InsertionTool(Design design, PBlock pblock, Site hint)

Method Summary

Modifier and Type	Method and Description
Pair<Site,BEL>	getFreeLUTInSite(Site site) Checks a specific site if there are any BELs available for LUT placement.
Pair<Site,BEL>	getFreeLUTLocation() Finds the next free LUT and returns it.
Cell	insertLUT1(String portInstName, EDIFPort port, int i) Creates and places a LUT1 (logically and physically) as a sink on the provided input port.

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LUT1InsertionTool

public LUT1InsertionTool(Design design,
                         PBlock pblock,
                         Site hint)

Method Detail

insertLUT1

public Cell insertLUT1(String portInstName,
                       EDIFPort port,
                       int i)

Creates and places a LUT1 (logically and physically) as a sink on the provided input port. It will also create a logical and physical net inside the top cell.

Parameters:

portInstName - Name of the input port instance.

port - The corresponding input port object

i - If the port is a bus, the specific bus index.

Returns:

The LUT1 cell that is created.

getFreeLUTLocation

public Pair<Site,BEL> getFreeLUTLocation()

Finds the next free LUT and returns it.

Returns:

A pair object containing the site and BEL that are available for LUT placement.

getFreeLUTInSite

public Pair<Site,BEL> getFreeLUTInSite(Site site)

Checks a specific site if there are any BELs available for LUT placement.

Parameters:

site - The site to check.

Returns:

An available and compatible LUT placement BEL site, or null if none are available in this site.