[SI-LIST] Re: Calling subcircuits in HSpice
- From: nrpatel@xxxxxxxxxxx
- To: si-list@xxxxxxxxxxxxx
- Date: Thu, 22 Dec 2005 14:24:43 -0500
I have the subcircuit defined as
.subckt name node1 node2 node3 node4
.ends
when i call it
X1 node1 node2 node3 node4 name
i want to be able to set node1 node2 node3 and node4 to different values
i have tried
X1 node1=0 node2=1 node3=1 node4=1 name
but that does not work
Thanks for your help
Nikhil
Adrianna <acgalletta@xxxxxxxxx>
12/22/2005 01:59 PM
To: nrpatel@xxxxxxxxxxx
cc:
Subject: Re: [SI-LIST] Calling subcircuits in HSpice
Hi Nikhil,
Have the subcircuit defined in a separate file and put an ".include
'file' " in the main spice deck you're running. Then when you make the
subcircuit calls, you write
in your main spice deck:
x<cell1> <vss> <vdd> <net1> <net2...>
+ <cell_name>
Note:
<cell1> : call anything you like, but be sure to have 'x' in front to
denote an instance (subcircuit) call.
<nets...> : make sure you have the correct ordering of the pin
definition defined in your subcircuit and connect appropiately.
<cell_name> : must match the subcircuit name
You can call the same instance as many times you like, but have a
commented definition of the subcircuit pin definition in the main deck
for reference.
The subcircuit file, you write circuit definition but the header line
should read
.subcircuit <cell_name> <port definitions>
<main circuit>
.ends
Also, you can find this information in the hspice manual.
Good luck,
Adrianna
On 12/22/05, nrpatel@xxxxxxxxxxx <nrpatel@xxxxxxxxxxx> wrote:
> Hello all,
> I have a subcircuit defined in HSpice and i am calling it 4 times in my
> main circuit. However each time i call it i want to set input nodes to
> different values in each of the 4 subcircuits.
> I do not want to copy the subcircuit 4 times and set parameters
> individually in each subcircuit. The subcircuit is very large.
> Does anyone know a better way of handling this?
>
> Thanks and Happy Holidays to all
> Nikhil
>
>
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