Mux

A mux (or multiplexer) taking one of several input lines, and then routing the selected input to a combined output vector.

Collaboration diagram for Mux:

The "Mux" is a signal multiplexer which merges several input signals into a single vector signal. The input signal are stacked in the output signal: First input signal first element of the output. This Mux object is defined through its parameters, which gives both the number of input ports and the width of these. The sum of all Input port widths must be equal to the output port width.

A figure illustrating the principles of multiplexing.

Author

Karl-Johan Reite

Date

02.03.2007 KJR: Initial version.

20.07.2011 KGA: Ported to 2.0

Example configuration excerpt

<Lib
  LibName      = "fhsim_base"
  SimObject    = "Signal/Mux"
  Name         = "A"
  NumInput     = "3"
  InPortWidth1 = "1"
  InPortWidth2 = "1"
  InPortWidth3 = "1"
/>
...
<Connection
  A.In1 = "1"
  A.In2 = "2"
  A.In3 = "3"
/>

Input Ports

Name	Width	Description
In1 .. In<NumInput>	<InPortWidth1> .. <InPortWidth<NumInput>>	The input port

Output Ports

Name	Width	Description
Out	<PortWidth>	The input signals multiplexed into a single signal

Configuration parameters

Name	Width	Description
PortWidth	1	The width of the Mux object input and output ports.
NumInput	1	The number of input signals
InPortWidth1 .. InPortWidth<NumInput>	-	The number of elements in each individual input signal

Initial conditions

There are no initial conditions for this function.

Full example file

<Contents>
  <OBJECTS>
    <Lib
        LibName="base" 
        SimObject="Signal/Mux"  
        Name="A" 
        NumInput="3"
        InPortWidth1="1"
        InPortWidth2="1"
        InPortWidth3="1"
    />
    <Lib
        LibName="base" 
        SimObject="Src/Sine"  
        Name="S1" 
        Amplitude="1"
        Bias="0"
        StartTime="0"
        PeriodS="4"
        PhaseDeg="0"
    />
    <Lib
        LibName="base" 
        SimObject="Src/Sine"  
        Name="S2" 
        Amplitude="2"
        Bias="0"
        StartTime="0"
        PeriodS="4"
        PhaseDeg="0"
    />
    <Lib
        LibName="base" 
        SimObject="Src/Sine"  
        Name="S3" 
        Amplitude="3"
        Bias="0"
        StartTime="0"
        PeriodS="4"
        PhaseDeg="0"
    />
 
  </OBJECTS>
  
  <INTERCONNECTIONS>
    <Connection
    A.In1="S1.Out"
    A.In2="S2.Out"
    A.In3="S3.Out"
    />
  </INTERCONNECTIONS>
 
  <INITIALIZATION>
    <InitialCondition
    />
  </INITIALIZATION>
 
  <INTEGRATION>
    <Engine
    IntegratorMethod="2"
    NumCores="1"
    TOutput="0, 0,1,2,3,4, 5, 30"
    LogStates ="1"  
    stepsize ="0"
    HMax="0.002"
    HMin="0.00000001"
    AbsTol="1e-3" RelTol="1e-3"
    UseRSSNormInsteadOfInfNorm="0"
    FileOutput="objects:all"
    />
  </INTEGRATION>
</Contents>

This SimObject is referred to as Signal/Mux