Package Modelica.Electrical.Digital.Tristates
Transfergates, Buffers, Inverters, and WiredX

Information

Standard package icon.

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Contents

Name	Description
`BUF3S`	Tristate buffer with enable active high
`BUF3SL`	Tristate buffer with enable active low
`INV3S`	Tristate Inverter with enable active high
`INV3SL`	Tristate inverter with enable active low
`NRXFERGATE`	Transfergate with enable active high. Output strength reduced.
`NXFERGATE`	Transfergate with enable active high
`PRXFERGATE`	Transfergate with enable active low. Output strength reduced.
`PXFERGATE`	Transfergate with enable active low
`WiredX`	Wired node with multiple input and one output

Model Modelica.Electrical.Digital.Tristates.NXFERGATE
Transfergate with enable active high

Information

Description in VHDL is given by http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_entities.vhd

Truth Table

DataIn	Enable	DataOut
*	U	U
*	X	UX
*	0	Z
*	1	DataIn
*	Z	UX
*	W	UX
*	L	Z
*	H	DataIn
*	-	UX

  UX: if dataIn == U then U else X

Parameters

Type	Name	Default	Description
`Time`	`tHL`	`0`	High->Low delay
`Time`	`tLH`	`0`	Low->High delay

Connectors

Type	Name	Description
`input` `DigitalInput`	`enable`
`input` `DigitalInput`	`x`
`output` `DigitalOutput`	`y`

Model Modelica.Electrical.Digital.Tristates.NRXFERGATE
Transfergate with enable active high. Output strength reduced.

Information

Description in VHDL is given by http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_entities.vhd

Truth Table

DataIn	Enable	DataOut
*	U	U
*	X	UW
*	0	Z
*	1	DataIn, Strength Reduced
*	Z	UW
*	W	UW
*	L	Z
*	H	DataIn, Strength Reduced
*	-	UW

  UW: if dataIn == U then U else W
  Strength Reduced: 0 -> L, 1 -> H, X -> W

Parameters

Type	Name	Default	Description
`Time`	`tHL`	`0`	High->Low delay
`Time`	`tLH`	`0`	Low->High delay

Connectors

Type	Name	Description
`input` `DigitalInput`	`enable`
`input` `DigitalInput`	`x`
`output` `DigitalOutput`	`y`

Model Modelica.Electrical.Digital.Tristates.PXFERGATE
Transfergate with enable active low

Information

Description in VHDL is given by http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_entities.vhd

Truth Table

DataIn	Enable	DataOut
*	U	U
*	X	UX
*	0	DataIn
*	1	Z
*	Z	UX
*	W	UX
*	L	DataIn
*	H	Z
*	-	UX

  UX: if dataIn == U then U else X

Parameters

Type	Name	Default	Description
`Time`	`tHL`	`0`	High->Low delay
`Time`	`tLH`	`0`	Low->High delay

Connectors

Type	Name	Description
`input` `DigitalInput`	`enable`
`input` `DigitalInput`	`x`
`output` `DigitalOutput`	`y`

Model Modelica.Electrical.Digital.Tristates.PRXFERGATE
Transfergate with enable active low. Output strength reduced.

Information

Description in VHDL is given by http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_entities.vhd

Truth Table

DataIn	Enable	DataOut
*	U	U
*	X	UW
*	0	DataIn, Strength Reduced
*	1	Z
*	Z	UW
*	W	UW
*	L	DataIn, Strength Reduced
*	H	Z
*	-	UW

UW: if dataIn == U then U else W Strength Reduced: 0 -> L, 1 -> H, X -> W

Parameters

Type	Name	Default	Description
`Time`	`tHL`	`0`	High->Low delay
`Time`	`tLH`	`0`	Low->High delay

Connectors

Type	Name	Description
`input` `DigitalInput`	`enable`
`input` `DigitalInput`	`x`
`output` `DigitalOutput`	`y`

Model Modelica.Electrical.Digital.Tristates.BUF3S
Tristate buffer with enable active high

Information

Description in VHDL is given by http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_entities.vhd

and for tristate table http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_misc.vhd

Truth Table

DataIn	Enable	DataOut*
*	U	U
*	X	UX
*	0	Z
*	1	DataIn
*	Z	UX
*	W	UX
*	L	Z
*	H	DataIn
*	-	UX

  UX: if dataIn == U then U else X
  DataOut*: Strength map for DataOut according to tristate table Buf3sTable

Parameters

Type	Name	Default	Description
`Time`	`tHL`	`0`	High->Low delay
`Time`	`tLH`	`0`	Low->High delay
`Strength`	`strength`	`S.'S_X01'`	output strength

Connectors

Type	Name	Description
`input` `DigitalInput`	`enable`
`input` `DigitalInput`	`x`
`output` `DigitalOutput`	`y`

Model Modelica.Electrical.Digital.Tristates.BUF3SL
Tristate buffer with enable active low

Information

Description in VHDL is given by http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_entities.vhd

and for tristate table http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_misc.vhd

Truth Table

DataIn	Enable	DataOut*
*	U	U
*	X	UX
*	0	DataIn
*	1	Z
*	Z	UX
*	W	UX
*	L	DataIn
*	H	Z
*	-	UX

  UX: if dataIn == U then U else X
  DataOut*: Strength map for DataOut according to tristate table Buf3slTable

Parameters

Type	Name	Default	Description
`Time`	`tHL`	`0`	High->Low delay
`Time`	`tLH`	`0`	Low->High delay
`Strength`	`strength`	`S.'S_X01'`	output strength

Connectors

Type	Name	Description
`input` `DigitalInput`	`enable`
`input` `DigitalInput`	`x`
`output` `DigitalOutput`	`y`

Model Modelica.Electrical.Digital.Tristates.INV3S
Tristate Inverter with enable active high

Information

Description in VHDL is given by http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_entities.vhd

and for tristate table http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_misc.vhd

Truth Table

DataIn	Enable	DataOut*
*	U	U
*	X	UX
*	0	Z
*	1	Not DataIn
*	Z	UX
*	W	UX
*	L	Z
*	H	Not DataIn
*	-	UX

  UX: if dataIn == U then U else X
  DataOut*: Strength map for DataOut according to tristate table Buf3sTable

Parameters

Type	Name	Default	Description
`Time`	`tHL`	`0`	High->Low delay
`Time`	`tLH`	`0`	Low->High delay
`Strength`	`strength`	`S.'S_X01'`	output strength

Connectors

Type	Name	Description
`input` `DigitalInput`	`enable`
`input` `DigitalInput`	`x`
`output` `DigitalOutput`	`y`

Model Modelica.Electrical.Digital.Tristates.INV3SL
Tristate inverter with enable active low

Information

Description in VHDL is given by http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_entities.vhd

and for tristate table http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_misc.vhd

Truth Table

DataIn	Enable	DataOut*
*	U	U
*	X	UX
*	0	Not DataIn
*	1	Z
*	Z	UX
*	W	UX
*	L	Not DataIn
*	H	Z
*	-	UX

  UX: if dataIn == U then U else X
  DataOut*: Strength map for DataOut according to tristate table Buf3slTable

Parameters

Type	Name	Default	Description
`Time`	`tHL`	`0`	High->Low delay
`Time`	`tLH`	`0`	Low->High delay
`Strength`	`strength`	`S.'S_X01'`	output strength

Connectors

Type	Name	Description
`input` `DigitalInput`	`enable`
`input` `DigitalInput`	`x`
`output` `DigitalOutput`	`y`

Model Modelica.Electrical.Digital.Tristates.WiredX
Wired node with multiple input and one output

Information

Wires n input signals in one output signal, without delay.

Resolution table is given by http://www.cs.sfu.ca/~ggbaker/reference/std_logic/src/std_logic_misc.vhd

Extends from Modelica.Electrical.Digital.Interfaces.MISO (Multiple input - single output).

Parameters

Type	Name	Default	Description
`Integer`	`n`	`2`	Number of inputs

Connectors

Type	Name	Description
`input` `DigitalInput`	`x[n]`	Connector of Digital input signal vector
`output` `DigitalOutput`	`y`	Connector of Digital output signal

Package Modelica.​Electrical.​Digital.​TristatesTransfergates, Buffers, Inverters, and WiredX

Information

Package Contents

Model Modelica.​Electrical.​Digital.​Tristates.​NXFERGATETransfergate with enable active high

Information

Parameters

Connectors

Model Modelica.​Electrical.​Digital.​Tristates.​NRXFERGATETransfergate with enable active high. Output strength reduced.

Information

Parameters

Connectors

Model Modelica.​Electrical.​Digital.​Tristates.​PXFERGATETransfergate with enable active low

Information

Parameters

Connectors

Model Modelica.​Electrical.​Digital.​Tristates.​PRXFERGATETransfergate with enable active low. Output strength reduced.

Information

Parameters

Connectors

Model Modelica.​Electrical.​Digital.​Tristates.​BUF3STristate buffer with enable active high

Information

Parameters

Connectors

Model Modelica.​Electrical.​Digital.​Tristates.​BUF3SLTristate buffer with enable active low

Information

Parameters

Connectors

Model Modelica.​Electrical.​Digital.​Tristates.​INV3STristate Inverter with enable active high

Information

Parameters

Connectors

Model Modelica.​Electrical.​Digital.​Tristates.​INV3SLTristate inverter with enable active low

Information

Parameters

Connectors

Model Modelica.​Electrical.​Digital.​Tristates.​WiredXWired node with multiple input and one output

Information

Parameters

Connectors

Package Modelica.Electrical.Digital.Tristates
Transfergates, Buffers, Inverters, and WiredX

Model Modelica.Electrical.Digital.Tristates.NXFERGATE
Transfergate with enable active high

Model Modelica.Electrical.Digital.Tristates.NRXFERGATE
Transfergate with enable active high. Output strength reduced.

Model Modelica.Electrical.Digital.Tristates.PXFERGATE
Transfergate with enable active low

Model Modelica.Electrical.Digital.Tristates.PRXFERGATE
Transfergate with enable active low. Output strength reduced.

Model Modelica.Electrical.Digital.Tristates.BUF3S
Tristate buffer with enable active high

Model Modelica.Electrical.Digital.Tristates.BUF3SL
Tristate buffer with enable active low

Model Modelica.Electrical.Digital.Tristates.INV3S
Tristate Inverter with enable active high

Model Modelica.Electrical.Digital.Tristates.INV3SL
Tristate inverter with enable active low

Model Modelica.Electrical.Digital.Tristates.WiredX
Wired node with multiple input and one output