def defineParamSpecs(cls, specs):
"""Define the PyCell parameters. The order of invocation of
specs() becomes the order on the form.
Arguments:
specs - (ParamSpecArray) PyCell parameters
"""
tranType = "pmos_vtg"
oxide = "thin"
length = specs.tech.getMosfetParams( tranType, oxide, "minLength")
# No dogbone allowed. This PyCell is used for the
# diffPair PyCell. For differential pair design,
# the assumption is that too much variability exists
# for minimum width transistors; hence dogbone isn't
# a useful configuration.
width = specs.tech.getPhysicalRule( "minWidth", Layer("contact")) + \
2.0 * specs.tech.getPhysicalRule( "minEnclosure", Layer("active"), Layer("contact"))
width = max( width, specs.tech.getMosfetParams( tranType, oxide, "minWidth"))
specs( "tranType", tranType, "MOSFET type (pmos_vtg or nmos_vtg)", ChoiceConstraint(["pmos_vtg", "nmos_vtg"]))
specs( "width", width, constraint = RangeConstraint( width, 1000*width, FailAction.USE_DEFAULT))
specs( "length", length, constraint = RangeConstraint( length, 1000*length, FailAction.USE_DEFAULT))
specs( "oxide", oxide, "oxide (thin or thick)", ChoiceConstraint(["thin", "thick"]))
specs( "xtorFillLayer", Layer( "metal1"))
specs( "sourceDiffOverlap", 0.0)
specs( "drainDiffOverlap", 0.0)
def defineParamSpecs(cls, specs):
"""Define the PyCell parameters. The order of invocation of
specs() becomes the order on the form.
Arguments:
specs - (ParamSpecArray) PyCell parameters
"""
oxide = "thick"
tranType = {
"pimplant": "pmos_thkox",
"nimplant": "nmos_thkox"
}[cls.implant]
l = specs.tech.getMosfetParams(tranType, oxide, "minLength")
# No dogbone allowed.
w = specs.tech.getPhysicalRule( "minWidth", specs.tech.getLayer(cls.contact)) + \
2.0 * specs.tech.getPhysicalRule( "minEnclosure", specs.tech.getLayer(cls.diffusion), specs.tech.getLayer(cls.contact))
w = max(w, specs.tech.getMosfetParams(tranType, oxide, "minWidth"))
specs("w",
w,
constraint=RangeConstraint(w, 1000 * w, FailAction.USE_DEFAULT))
specs("l",
l,
constraint=RangeConstraint(l, 1000 * l, FailAction.USE_DEFAULT))
specs("fingers", 1),
parameters = (
("diffContactLeft", True),
("diffContactLeftCov", 1.0),
("gateContactLeft", False),
("gateContactLeftCov", 1.0),
("diffContactCenter", False),
("diffContactCenterCov", 1.0),
("gateContactCenter", False),
("gateContactCenterCov", 1.0),
("diffContactRight", True),
("diffContactRightCov", 1.0),
("gateContactRight", False),
("gateContactRightCov", 1.0),
)
rangeConstraint = RangeConstraint(0.0, 1.0, FailAction.USE_DEFAULT)
for parameter in parameters:
if isinstance(parameter[1], float):
specs(parameter[0], parameter[1], constraint=rangeConstraint)
else:
specs(parameter[0], parameter[1])
def defineParamSpecs( cls, specs):
"""Define the PyCell parameters. The order of invocation of
specs() becomes the order on the form.
Arguments:
specs - (ParamSpecArray) PyCell parameters
"""
c = RangeConstraint( 1, 100000, FailAction.USE_DEFAULT)
specs( "xCnt", 1, constraint=c)
specs( "yCnt", 1, constraint=c)
c = ChoiceConstraint( [ "centerCenter", "lowerCenter", "lowerLeft", "centerLeft"], FailAction.USE_DEFAULT)
specs( "origin", "centerCenter", constraint=c)