byucc.jhdl.Xilinx.Virtex2
Class ibufg_lvttl

java.lang.Object
  byucc.jhdl.base.Nameable
      byucc.jhdl.base.Node
          byucc.jhdl.base.Cell
              byucc.jhdl.base.CL
                  byucc.jhdl.Xilinx.Virtex2.ibufg_lvttl

All Implemented Interfaces:

BooleanFlags, Buf, IOPad, PreDefinedSchematic, byucc.jhdl.base.Propagateable, TreeListable, UnmappableCell

public final class ibufg_lvttl

extends CL

implements UnmappableCell, Buf, IOPad, PreDefinedSchematic

IBUFG and its variants (listed below) are dedicated input buffers for connecting to the clock buffer (BUFG) or CLKDLL. The name extensions (LVCMOS2, PCI33_3, PCI33_5, etc.) specify the I/O interface standard used by the component. For example, IBUFG_CTT is an input buffer that uses the CTT I/O- signaling standard. The Xilinx implementation software converts each BUFG to an appropriate type of global buffer for the target PLD device. The IBUFG output can only be connected to the CLKIN input of a CLKDLL or to the input of a BUFG. The IBUFG can only be driven by an IPAD. The hardware implementation of the I/O standards requires that you follow a set of usage rules for the SelectI/O buffer components. Refer to the \"SelectI/O Usage Rules\" section under the IBUF_selectIO section for information on using these components. (Source: XACT Libraries Guide, Chapter 6 IBUFG_selectIO, Xilinx Corporation, 1999.)

Field Summary

static CellInterface[]	cell_interface The port interface for: ibufg_lvttl i : in (1) o : out (1)
static java.lang.String	cellname The static cellname (netlist reference name) for ibufg_lvttl

Fields inherited from class byucc.jhdl.base.Cell

BOOLEAN, CELL_NAME_DECLARATION, CellInterfaceDeterminesUniqueNetlistStructure, DETERMINE_FROM_STRING, GENERICS_DECLARATION, implicit_interface, IMPLICIT_INTERFACE_DECLARATION, INTEGER, INTERFACE_DECLARATION, LONG, PORT_IOS_DECLARATION, PORT_NAMES_DECLARATION, PORT_NET_NAMES_DECLARATION, PORT_PROPERTIES, PORT_WIDTHS_DECLARATION, SIGN_EXT, STRING, ZERO_PAD

Fields inherited from interface byucc.jhdl.apps.Viewers.Schematic.PreDefinedSchematic

PreDefinedSchematic_ADD, PreDefinedSchematic_ADDSUB, PreDefinedSchematic_AND, PreDefinedSchematic_BUF, PreDefinedSchematic_CONST, PreDefinedSchematic_GEN, PreDefinedSchematic_GND, PreDefinedSchematic_INC, PreDefinedSchematic_INV, PreDefinedSchematic_MUX, PreDefinedSchematic_NAND, PreDefinedSchematic_NOR, PreDefinedSchematic_OR, PreDefinedSchematic_PULLDOWN, PreDefinedSchematic_PULLUP, PreDefinedSchematic_REG, PreDefinedSchematic_SHL, PreDefinedSchematic_SHR, PreDefinedSchematic_TBUF, PreDefinedSchematic_VCC, PreDefinedSchematic_XNOR, PreDefinedSchematic_XOR

Fields inherited from interface byucc.jhdl.base.BooleanFlags

ANTECEDANT_IS_BEHAVIORALLY_MODELED, ASYNC_PORT, ASYNCHRONOUS_RESOLVED, ATOMICALLY_PLACEABLE, ATOMICALLY_UNMAPPABLE, BEHAVIORALLY_MODELED_BRANCH, CLK_PORT, CLOCK_METHOD_IMPLEMENTED_BY_USER, CLOCK_METHOD_IS_DISABLED, CLOCKABLE_IS_SCHEDULED, DANGLING_IS_OK, DELETE_MARK, FATAL_BUILD_ERROR_OCCURED, HAS_BEEN_TRACED, HAS_USER_SPECIFIED_NAME, HWUPDATE, IMPLICIT_PORT, IN_CLK_PORT, IN_PORT, INOUT_PORT, IO_TYPE_FLAGS, IS_BEHAVIORALLY_MODELED, IS_ON_BUILD_STACK, IS_ON_PROP_LIST, IS_PLACED, METHODS_IMPLEMENTED_BY_USER, NETLISTABLE, ORIG_WIRE_IS_ATOMIC, OUT_PORT, PLACEMENT_IS_LOCKED, PROPAGATE_METHOD_IMPLEMENTED_BY_USER, PROPAGATE_METHOD_IS_DISABLED, RECURSION_FLAG, RESET_METHOD_IMPLEMENTED_BY_USER, SIMULATEABLE, SOURCELESS_IS_OK, SYNC_PORT, VISIBLE

Constructor Summary

protected	ibufg_lvttl(Node parent) Used only by child classes to pass up the parent cell.
	ibufg_lvttl(Node parent, ArgBlockList abl) Constructs a new ibufg_lvttl, connecting its ports as given by the String-Wire pairs in the ArgBlockList.
protected	ibufg_lvttl(Node parent, java.lang.String name) Used only by child classes to pass up the parent cell and instance name.
	ibufg_lvttl(Node parent, java.lang.String instanceName, ArgBlockList abl) Constructs a new ibufg_lvttl, connecting its ports as given by the String-Wire pairs in the ArgBlockList.
	ibufg_lvttl(Node parent, java.lang.String instanceName, java.lang.String s0, Wire w0, java.lang.String s1, Wire w1) Constructs a new ibufg_lvttl, connecting each Wire to the port whose name is given by the accompanying String parameter The initial String parameter specifies the instance name.
	ibufg_lvttl(Node parent, java.lang.String s0, Wire w0, java.lang.String s1, Wire w1) Constructs a new ibufg_lvttl, connecting each Wire to the port whose name is given by the accompanying String parameter
	ibufg_lvttl(Node parent, java.lang.String instanceName, Wire i, Wire o) Constructs a new ibufg_lvttl.
	ibufg_lvttl(Node parent, Wire i, Wire o) Constructs a new ibufg_lvttl.

Method Summary

boolean	cellInterfaceDeterminesUniqueNetlistStructure() When false, the default behavior of this method, each cell will list itself separately in a netlist, guaranteeing that the netlist will not have invalid data at the expense of a larger file-size.
java.lang.String	getCellName() Access the cell name associated with a derived class.
static void	main(java.lang.String[] argv)
void	propagate() Used for things that are combinationally propagated like combinational logic and Wires and such.
static void	test()
int	type() This method returns one of the predefined schematic constants to identify the type of this cell.

Methods inherited from class byucc.jhdl.base.CL

behavioralModelIsAvailable, defaultSimulationModelIsBehavioral, hasBeenTraced, hasBeenTraced, hasBehaviorInClockMethod, hasBehaviorInPropagateMethod, isAsynchronouslyScheduled, isAsynchronouslyScheduled, isReadyToBeAsynchronouslyScheduled, needsToBeAsynchronouslyScheduled

Methods inherited from class byucc.jhdl.base.Cell

addPort, addPorts, addProperties, addProperties, addProperty, addProperty, addProperty, addProperty, antecedantIsBehaviorallyModeled, antecedantIsBehaviorallyModeled, bind, bind, bind, bind, clk, connect, connectAllWires, connectOptional, constructSubCell, constructSubCellNoImplicitPorts, disableAllBehavioralModels, disableBehavioralModel, enableBehavioralModel, getArgument, getAttachedPort, getAttachedWire, getAttachedWireNoException, getCellNetlist, getCellNetList, getCellNetlist, getCellNetlist, getDescendents, getFlatNetlist, getFlatNetlistableChildren, getGeneric, getHeight, getNetlistableChildren, getPlacementInfo, getPortProperties, getPortRecord, getPortRecords, getProperties, getProperty, getPropertyValue, getSinkWires, getSourceWires, getSubCellClass, getUniqueCellName, getWidth, getX, getY, hasPort, hasPorts, in, in, inout, inout, isAsynchronousSourceSinkResolved, isBehaviorallyModeled, isBehaviorallyModeledBranch, isInput, isLeafCell, isNetlistable, isNetlistable, isNetlistablePort, isNetlistLeaf, isNotNetlistable, isNotNetlistablePort, isNotVisible, isOutput, isPlaceable, isPlaceable, isPlaced, isPlaced, isPlacementLocked, isRoot, isSimulateable, isSimulateable, isSink, isSource, isVisible, isVisible, join, lockPlacement, nc, out, out, param, popHierarchy, port, port, port, postorderCheck, preorderCheck, pushHierarchy, pushHierarchy, pushHierarchy, pushHierarchy, pushHierarchyNoImplicitPorts, pushHierarchyNoImplicitPorts, removeAllUnconnectedPorts, removePort, removeProperty, replaceProperty, replaceProperty, resetBehavioralModelsToDefaults, setAsynchronousSourceSinkResolved, setGeneric, setHeight, setNotNetlistable, setNotNetlistable, setNotVisible, setNotVisible, setPlacementInfo, setPortNotNetlistable, setPortNotNetlistable, setProperty, setWidth, subClassDelete, toString, uniquifyCell, userDefinedClockCount, verifyAndCleanup

Methods inherited from class byucc.jhdl.base.Node

addObservable, addSimulatorCallback, checkAll, delete, getBuildingFlag, getChildren, getChildrenEnumeration, getDefaultClock, getInstanceName, getParent, getParentCell, getRelatives, getSystem, getWires, optimize, orphanAllowed, printAllChildren, printTree, removeSimulatorCallback, setDefaultClock

Methods inherited from class byucc.jhdl.base.Nameable

caseSensitivity, caseSensitivity, disableNameClashChecking, getFullName, getFullNameNoTestBench, getHierNameNoTestBench, getInstanceNo, getInstanceNumber, getLeafName, getLeafName, getRelativeName, getUserName, getUserName, hasUserSpecifiedName, isDescendantOf, setInstanceNumber

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

cellname

public static final java.lang.String cellname

The static cellname (netlist reference name) for ibufg_lvttl

See Also:

Constant Field Values

cell_interface

public static CellInterface[] cell_interface

The port interface for: ibufg_lvttl i : in (1) o : out (1)

Constructor Detail

ibufg_lvttl

protected ibufg_lvttl(Node parent)

Used only by child classes to pass up the parent cell.

Parameters:

parent - Parent cell

ibufg_lvttl

protected ibufg_lvttl(Node parent,
                      java.lang.String name)

Used only by child classes to pass up the parent cell and instance name.

Parameters:

parent - Parent cell

name - Instance name of the cell

ibufg_lvttl

public ibufg_lvttl(Node parent,
                   Wire i,
                   Wire o)

Constructs a new ibufg_lvttl.

Parameters:

parent - The parent Cell to the ibufg_lvttl

i - The Wire to be connected to input port i

o - The Wire to be connected to output port o

ibufg_lvttl

public ibufg_lvttl(Node parent,
                   java.lang.String instanceName,
                   Wire i,
                   Wire o)

Constructs a new ibufg_lvttl. The initial String parameter specifies the instance name.

Parameters:

parent - The parent Cell to the ibufg_lvttl

instanceName - The instance name of the ibufg_lvttl

i - The Wire to be connected to input port i

o - The Wire to be connected to output port o

ibufg_lvttl

public ibufg_lvttl(Node parent,
                   java.lang.String s0,
                   Wire w0,
                   java.lang.String s1,
                   Wire w1)

Constructs a new ibufg_lvttl, connecting each Wire to the port whose name is given by the accompanying String parameter

Parameters:

parent - The parent Cell to the ibufg_lvttl

s0 - The name of the port to which w0 will be connected

w0 - The Wire to be connected to the port specified by s0

s1 - The name of the port to which w1 will be connected

w1 - The Wire to be connected to the port specified by s1

ibufg_lvttl

public ibufg_lvttl(Node parent,
                   java.lang.String instanceName,
                   java.lang.String s0,
                   Wire w0,
                   java.lang.String s1,
                   Wire w1)

Constructs a new ibufg_lvttl, connecting each Wire to the port whose name is given by the accompanying String parameter The initial String parameter specifies the instance name.

Parameters:

parent - The parent Cell to the ibufg_lvttl

instanceName - The instance name of the ibufg_lvttl

s0 - The name of the port to which w0 will be connected

w0 - The Wire to be connected to the port specified by s0

s1 - The name of the port to which w1 will be connected

w1 - The Wire to be connected to the port specified by s1

ibufg_lvttl

public ibufg_lvttl(Node parent,
                   ArgBlockList abl)

Constructs a new ibufg_lvttl, connecting its ports as given by the String-Wire pairs in the ArgBlockList. Any generic assignments are made through String-String pairs in the ArgBlockList.

Parameters:

parent - The parent Cell to the ibufg_lvttl

abl - The list of String-Wire pairs for port assignments, and String-String pairs for generic assignments.

ibufg_lvttl

public ibufg_lvttl(Node parent,
                   java.lang.String instanceName,
                   ArgBlockList abl)

Constructs a new ibufg_lvttl, connecting its ports as given by the String-Wire pairs in the ArgBlockList. Any generic assignments are made through String-String pairs in the ArgBlockList. The initial String parameter is the instance name.

Parameters:

parent - The parent Cell to the ibufg_lvttl

instanceName - The instance name of the ibufg_lvttl

abl - The list of String-Wire pairs for port assignments, and String-String pairs for generic assignments.

Method Detail

getCellName

public java.lang.String getCellName()

Description copied from class: Cell

Access the cell name associated with a derived class. The cellname field is lazily evaluated on the first call of this method. Can be overriden to make cellname different by instance. If the field does not exist, this defaults to the classname.

Overrides:

getCellName in class Cell

Returns:

the cell name associated with a derived class, null if not declared.

propagate

public final void propagate()

Description copied from interface: byucc.jhdl.base.Propagateable

Used for things that are combinationally propagated like combinational logic and Wires and such.

Specified by:

propagate in interface byucc.jhdl.base.Propagateable

cellInterfaceDeterminesUniqueNetlistStructure

public final boolean cellInterfaceDeterminesUniqueNetlistStructure()

Description copied from class: Cell

When false, the default behavior of this method, each cell will list itself separately in a netlist, guaranteeing that the netlist will not have invalid data at the expense of a larger file-size. Overriding this method to return true allows JHDL to save memory and netlists to be smaller by sharing the netlist structures that are guaranteed to be identical. NOTE: Do not override this unless every possible condition responsible for structural differences in a class (types and amount of children cells created, and arrangements of wires connected to ports) is included in the cellInterface[] of that class.

Overrides:

cellInterfaceDeterminesUniqueNetlistStructure in class Cell

Returns:

false if not overridden, preventing all memory sharing

type

public int type()

Description copied from interface: PreDefinedSchematic

This method returns one of the predefined schematic constants to identify the type of this cell.

Specified by:

type in interface PreDefinedSchematic

Returns:

A predefined schematic constant

main

public static void main(java.lang.String[] argv)

test

public static void test()