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ADDLOCAP(3) MBK LOGICAL FUNCTIONS ADDLOCAP(3)

NAME

addlocap - create a logical capacitor

ORIGIN

This software belongs to the ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Université Pierre et Marie CURIE, in Paris, France.
 
Web : http://asim.lip6.fr/recherche/alliance/
 
E-mail : alliance-users@asim.lip6.fr

SYNOPSYS

#include "mlo.h"


locap_list ∗addlocap(ptfig,type,capa,tcon,bcon,name)
lofig_list ∗ptfig ;
char type ;
double capa ;
losig_list ∗tcon, ∗bcon ;
const char ∗name ;

PARAMETERS

ptfig
Pointer to the figure in which the capacitor should be added
type
Capacitor type
capa
Capacitance value in Farads
tcon
Pointer to the signal to be connected on the capacitor top plate
bcon
Pointer to the signal to be connected on the capacitor bottom plate
name
Capacitor instance name

DESCRIPTION

addlocap creates a new capacitor, and adds it to the list of capacitors pointed to by ptfig -> LOCAP. The new capacitor is added in front of the list, and becomes itself the list head.
 
The type parameter can take two values :
CAPMIM
for a metal/metal capacitor (the top plate and the bottom plate layers are different metal layers)
CAPPNWELL
for a POLY/NWELL capacitor (if available in the technology). The top plate layer is POLY, bottom plate is NWELL.
The capa argument is the capacitance value in Farads.
 
Two connectors are created each time a capacitor is added, and the tcon and bcon losigs are attached to the SIG field of the locon of the appropriate connector. The connectors names are tcon (top plate) and bcon (bottom plate); their direction, DIR, are set to 'P', and their TYPE INTERNAL. For details on the structures, see locon(3) and locap(3).

RETURN VALUE

addlocap returns a pointer to the newly created capacitor.

ERRORS

"∗∗∗ mbk error ∗∗∗ illegal capacitor type : type"
The type is not a legal capacitor type.

EXAMPLE

#include "mlo.h"


void parallel_capacitors(void) /∗ netlist of two parallel capacitors ∗/
{
  lofig_list ∗pt  = NULL ;
  losig_list ∗in  = NULL ;
  losig_list ∗out = NULL ;


  pt = addlofig("parallel_capacitors") ;
  addlocon(pt,"in",in = givelosig(pt,0),IN) ;
  addlocon(pt,"out",out = givelosig(pt,1),OUT) ;


  addlocap(pt,CAPMIM,0.5e-6,in,out,"cap1") ;
  addlocap(pt,CAPMIM,0.5e-6,in,out,"cap2") ;
}

SEE ALSO

mbk(1), lofig(3), locap(3), locon(3), dellocap(3).

BUG REPORT

This tool is under development at the ASIM department of the LIP6 laboratory.
 
We need your feedback to improve documentation and tools.
 
August 14, 2002 ASIM/LIP6