DiffMat Class Reference

Used to hold rules for diffusion. More...

#include <tech.h>

Inheritance diagram for DiffMat:

Public Member Functions
	DiffMat (char *s)
int	effOverhang (int w, int hasvia=0)
int	viaSpaceEdge ()
int	viaSpaceMid ()
int	getPolySpacing ()
int	getNotchSpacing ()
int	getOppDiffSpacing (int flavor)
int	getSpacing (int flavor)
int	getWdiffToDiffSpacing ()
int	getViaFet ()
Contact *	getUpC ()
Public Member Functions inherited from Material
	Material (const char *nm=NULL)
virtual const char *	getName ()
void	addGDS (char **table, int sz)
void	addGDSBloat (int *table, int sz)
const char *	viaUpName ()
int	minArea ()
int	minWidth ()
int	minSpacing ()

Protected Attributes
int	diffspacing
int *	spacing
int *	oppspacing
int	polyspacing
int	notchspacing
RangeTable *	overhang
int	via_edge
int	via_fet
Protected Attributes inherited from Material
const char *	name
	drawing name in magic
RangeTable *	width
	min width range table (indexed by length)
RangeTable *	spacing_w
	min spacing range table (indexed by width)
int	minarea
int	maxarea
Contact *	viaup
	contact/via to material that is above
Contact *	viadn
	contact/via to material that is below
list_t *	gds
	GDS layer list.
int *	gds_bloat
	GDS bloat table.

Friends
class	Technology

Detailed Description

Used to hold rules for diffusion.

Constructor & Destructor Documentation

DiffMat()

DiffMat::DiffMat ( char *  s )

inline

Parameters

s	is the name of the diffusion layer

Member Function Documentation

effOverhang()

int DiffMat::effOverhang	(	int	w,
		int	hasvia = 0
	)

Used to calculate the amount of diffusion overhang given the width of the last fet in a transistor stack (a.k.a. channel connected region). The hasvia flag is used to indicate whether this diffusion needs to overhang enough to accommodate a via. This uses viaSpaceEdge() as well to make sure there is enough space.

Parameters

w	is the width of the last fet
hasvia	is 1 if there is a via here, 0 otherwise

Returns

the amount of diffusion overhang

getNotchSpacing()

int DiffMat::getNotchSpacing ( )

inline

Returns

the amount of space for the notch in the diffusion. This is the space from the notch edge to poly.

getOppDiffSpacing()

int DiffMat::getOppDiffSpacing ( int  flavor )

inline

Parameters

flavor

is the transistor flavor

Returns

the spacing to the opposite type (i.e. n-to-p or p-to-n) of diffusion

getPolySpacing()

int DiffMat::getPolySpacing ( )

inline

Returns

spacing from poly to diffusion

getSpacing()

int DiffMat::getSpacing ( int  flavor )

inline

Parameters

flavor

is the transistor flavor

Returns

the spacing from this diffusion to the diffusion of the same type (n/p) of the specified flavor

getUpC()

Contact * DiffMat::getUpC ( )

inline

Returns

the contact from diffusion up to the first metal routing layer

getViaFet()

int DiffMat::getViaFet ( )

inline

Returns

the spacing from the edge of a via to the transistor

getWdiffToDiffSpacing()

int DiffMat::getWdiffToDiffSpacing ( )

inline

Returns

diffusion to well-diffusion spacing (should just be the diffusion spacing)

viaSpaceEdge()

int DiffMat::viaSpaceEdge

(

)

Returns

the amount of space needed to accomodate a via where one side has a fet and the other side is the edge.

viaSpaceMid()

int DiffMat::viaSpaceMid

(

)

Returns

the amount of space needed to accomodaet a via between two fets (i.e. in the middle of a transistor stack)

Friends And Related Function Documentation

Technology

friend class Technology

friend

Member Data Documentation

diffspacing

int DiffMat::diffspacing

protected

notchspacing

int DiffMat::notchspacing

protected

oppspacing

int* DiffMat::oppspacing

protected

overhang

RangeTable* DiffMat::overhang

protected

polyspacing

int DiffMat::polyspacing

protected

spacing

int* DiffMat::spacing

protected

via_edge

int DiffMat::via_edge

protected

via_fet

int DiffMat::via_fet

protected

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

• act/tech.h