[ibis-macro] Re: Handling termination in BIRD 144
- From: "Todd Westerhoff" <twesterh@xxxxxxxxxx>
- To: "'IBIS-ATM'" <ibis-macro@xxxxxxxxxxxxx>
- Date: Mon, 05 Mar 2012 17:49:47 -0500 (EST)
I still think BIRD 116 is the right way to provide this functionality. We
don't need two different ways to do what amounts to the same thing.
Todd.
Description: cid:EAFF2D52-4B63-4A05-9D24-B96BE375B7E0@eau.wi.charter.com
Todd Westerhoff
VP, Software Products
Signal Integrity Software Inc. . <http://www.sisoft.com/> www.sisoft.com
6 Clock Tower Place . Suite 250 . Maynard, MA 01754
(978) 461-0449 x24 . <mailto:twesterh@xxxxxxxxxx> twesterh@xxxxxxxxxx
"Three in the morning and I'm still awake,
So I picked up a pen and a page . "
-Sidewalk Prophets
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Feras Al-Hawari
Sent: Monday, March 05, 2012 4:54 PM
To: 'IBIS-ATM'
Subject: [ibis-macro] Handling termination in BIRD 144
Hello,
I have updated BIRD 144 to support terminating: 1) unused ports, and 2)
connected ports. The example below shows how. Figures and more details
will be provided in the latest version of the BIRD , which will be
uploaded very soon.
|-------------------------------------------------------------------
|** Example of True Differential [External Model] using Touchstone:
|-------------------------------------------------------------------
|
|
[Model] Ext_Linear_Diff_Output_Buff_Touchstone
Model_type Output_diff
Rref_diff = 100
|
| Other model subparameters are optional
|
| typ min max
[Voltage Range] 3.3 3.0 3.6
|
[Ramp]
dV/dt_r 1.57/0.36n 1.44/0.57n 1.73/0.28n
dV/dt_f 1.57/0.35n 1.46/0.44n 1.68/0.28n
|
[External Model]
** Language Touchstone
|
| Corner corner_name file_name circuit_name
Corner Typ diffout_typ.s4p NA
Corner Min diffout_min.s4p NA
Corner Max diffout_max.s4p NA
|
|** Ports List of port names (in same order as in Touchstone)
|
| Based on the Ports order below:
|** my_drive_pos should be connected to port 1 of Touchstone
|** A_signal_pos should be connected to port 2 of Touchstone
|** my_drive_neg should be connected to port 3 of Touchstone
|** A_signal_neg should be connected to port 4 of Touchstone
|
Ports my_drive_pos A_signal_pos my_drive_neg A_signal_neg
|***
|**** Port_termination reserved_port ts_port resistor_value
voltage_value
**** Port_termination A_puref NA 1e6
0.0
**** Port_termination A_pcref NA 1e6
0.0
**** Port_termination A_pdref NA 1e6
0.0
**** Port_termination A_gcref NA 1e6
0.0
**** Port_termination my_drive_pos 1 50
NA
**** Port_termination my_drive_neg 3 50
NA
|
| D_to_A d_port port1 port2 vlow vhigh trise tfall
corner_name
D_to_A D_drive_pos my_drive_pos A_pdref 0.0 3.3 0.5n 0.3n
Typ
D_to_A D_drive_pos my_drive_pos A_pdref 0.0 3.0 0.6n 0.3n
Min
D_to_A D_drive_pos my_drive_pos A_pdref 0.0 3.6 0.4n 0.3n
Max
D_to_A D_drive_neg my_drive_neg A_pdref 0.0 3.3 0.5n 0.3n
Typ
D_to_A D_drive_neg my_drive_neg A_pdref 0.0 3.0 0.6n 0.3n
Min
D_to_A D_drive_neg my_drive_neg A_pdref 0.0 3.6 0.4n 0.3n
Max
|
[End External Model]
Best regards,
Feras Al-Hawari
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