Hurricane::Net::Direction Class Reference

Public Types
enum	Code {   DirIn = 0x0001 ,   DirOut = 0x0002 ,   DirUndefined = 0x0000 ,   ConnTristate = 0x0100 ,   ConnWiredOr = 0x0200 ,   UNDEFINED = DirUndefined ,   IN = DirIn ,   OUT = DirOut ,   INOUT = DirIn | DirOut ,   TRISTATE = DirOut | ConnTristate ,   TRANSCV = DirIn | DirOut | ConnTristate ,   WOR_OUT = DirOut | ConnWiredOr ,   WOR_INOUT = DirIn | DirOut | ConnWiredOr ,   DirMask = DirIn | DirOut | DirUndefined }

Detailed Description

Encapsulate the Net::Direction::Code enumeration that defines the signal direction. This direction is meaningful for external nets only.

Member Enumeration Documentation

Code

enum Hurricane::Net::Direction::Code

This enumeration defines the signal direction inside the Net::Direction. It is build upon two kind of atomic flags, one telling were the sources and sinks are located regarding the Cell and the other indicating the nature of the driver (normal, tristate, wired-or).

Enumerator
DirIn	There is at least one sink on this net (atomic).
DirOut	There is at least one source on this net (atomic).
DirUndefined	Undefined direction (atomic).
ConnTristate	The sources are tristates, this a bus (atomic).
ConnWiredOr	The sources are wired or, this a bus (atomic).
UNDEFINED	Undefined direction.
IN	There must be only sinks inside and a single permanent driver outside.
OUT	There must be no driver outside and a single permanent driver inside (and no sinks inside).
INOUT	There must be one permanent driver inside withs at least one sink inside.
TRISTATE	An OUT signal with a tristate driver (bus).
TRANSCV	An INOUT signal with a tristate driver (bus).
WOR_OUT	An OUT signal with a wired-or driver (bus).
WOR_INOUT	An INOUT signal with a wired-or driver (bus).

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The documentation for this class was generated from the following files:

• Net.h
• Net.dox