python3-eispice/module/ibis.py at master · Narrat/python3-eispice · GitHub

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# Charles Eidsness <charles@cooper-street.com>

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

"""

This module provides support for ibis model defined devices.

Device Classes:

Receiver -- IBIS Receiver Device Model

Driver -- IBIS Driver Device Model

Package -- IBIS Package Device Model

Pin -- IBIS Pin Model (Buffer model plus PCackage Model)

IBIS Classes:

IbisPinData -- IBIS Pin Data

IbisModel_Selector -- IBIS Model Selector Data

IbisVICurve -- IBIS VI Curve Data

IbisPin -- IBIS Pin Data

IbisPackage -- IBIS Package Data

IbisWaveform -- IBIS Waveform Data

IbisRamp -- IBIS Ramp Data

IbisModel_Spec -- IBIS Spec Data

IbisModel -- IBIS Model Data

IbisComponent -- IBIS Component Data

Ibis -- Top Level IBIS Data

Functions:

calcDriverKDoubleWave -- Calculates a TA Table using 2 Waveforms

calcDriverKSingleWave -- Calculates a TA Table using 1 Waveform

calcDriverKRamp -- Calculates a TA Table using Ramp Data

"""

from ibis_parser import *

class Ibis(Ibis_Parser):

"""IBIS Model

Examples:

>>> import eispice

>>> ibs = eispice.Ibis('test')

1. Double Waveform Defined Model

>>> cct = eispice.Circuit('IBIS Double Waveform Test')

>>> cct.Driver = ibs['2']('vsx')

>>> cct.Vmeas = eispice.V('vsx', 'vs', 0)

>>> cct.Rt = eispice.R('vs', 'vi', '33.2')

>>> cct.Tg = eispice.T('vi', 0, 'vo', 0, 50, '2n')

>>> cct.Receiver = ibs['1']('vo')

>>> cct.tran('0.01n', '15n')

>>> cct.check_v('vo', 2.942970279e-01, '4.7n')

True

>>> cct.check_i('Vmeas', 2.200965422e-02, '7.1n')

True

2. Ramp Waveform Defined Model

>>> cct = eispice.Circuit('IBIS Ramp Test')

>>> cct.Driver = ibs['4']('vsx')

>>> cct.Vmeas = eispice.V('vsx', 'vs', 0)

>>> cct.Rt = eispice.R('vs', 'vi', '33.2')

>>> cct.Tg = eispice.T('vi', 0, 'vo', 0, 50, '2n')

>>> cct.Receiver = ibs['1']('vo')

>>> cct.tran('0.01n', '15n')

>>> cct.check_v('vo', -2.416134420e-01, '1.7n')

True

>>> cct.check_i('Vmeas', 1.521229286e-02, '4.9n')

True

"""

def __init__(self, filename, device=None):

"""

Arguments:

filename -- IBIS Model to import

device -- (optional) name of default device, default = first device

"""

if device != None:

device = device.lower()

Ibis_Parser.__init__(self, filename, device)

def __getitem__(self, pin):

"""Returns a device model for the specified pin."""

class PinBuilder:

def __init__(self, pin, ibs):

self.pin = pin

self.ibs = ibs

def __call__(self, node, speed=Typical, direction=Rising, io=Output,

modelName=None):

return Pin(self.ibs, self.pin, node, speed, direction, io, modelName)

return PinBuilder(pin.lower(), self)

if __name__ == '__main__':

import doctest

doctest.testmod(verbose=False)

print('Testing Complete')

python3-eispice/module/ibis.py at master · Narrat/python3-eispice · GitHub

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