[SI-LIST] Re: digital vector

You need a script to automate the generation of your spice code from a
simple 10101 file. I think that this has been covered in previous strings.
Does anyone know the URL?

jon


-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Yoni Tzafrir
Sent: Thursday, April 24, 2003 3:23 AM
To: scott@xxxxxxxxxxxxx; Andrew.Ingraham@xxxxxx
Cc: Si-List (E-mail)
Subject: [SI-LIST] Re: digital vector




hi scott,
sorry for replying only now.
i've read a little about E element, and i am a little confused because =
the syntex shloud be:
 E xxx n+ n- <VCVS> in+ in- gain <MAX=3D val> <MIN=3D val>
 + <SCALE=3D val> <TC1=3D val> <TC2=3D val><ABS=3D1> <IC=3D val>

and you called the nodes n+ and in+ by the name vector. does it =
specifies more than one node? anyway i don't think that an E element is =
a good solution for what i am trying to do.
to make a long story short:
i have already 2 Hspice models of buffers. the input nodes of those =
buffers are called drv1in, drv1gnd and drv2in, drv2gnd.
in the input of one buffer i want to toggle buffer one with the vector =
010100110, and the second one with 010110111 both with a voltage between =
0 and 1.6V. is there a simple way to do it than:
 vdrv1in   drv1in    drv1gnd   PWL (0 0, 1.9n 0, 2.1n 1.6, 3.9n 1.6, =
4.1n 0, 5.9n 0, 6.1n 1.6, 7.9n 1.6, 8.1n 0, 11.9n 0, 12.1n 1.6, 15.9n =
1.6, 16.1n 0, 18n 0 R TD=3D1.8n)
 vdrv2in   drv2in    drv2gnd   PWL  ...

note that this simulation is for 2 buffers, but i might want to do it =
with 30 buffers, which can complicate things
Yonatan (Yoni) Tzafrir
*Tel:               (972) - 3 - 7552300 (T/L: 351)
*Fax:          (972) - 3  - 6177130
  *Mobile:       (972) -54- 459469
*E-mail:       <mailto:yonitz@xxxxxxxxxxxxx>



-----Original Message-----
From: Scott McMorrow [mailto:scott@xxxxxxxxxxxxx]
Sent: Sunday, April 06, 2003 9:16 PM
To: Andrew.Ingraham@xxxxxx
Cc: Si-List (E-mail)
Subject: [SI-LIST] Re: digital vector


Yoni,

Yes, just as Andy says, you can use a VCVS configured as a unity gain=20
amplifier to re-reference to the local ground, in the same way that you=20
would use one to re-reference a received signal to it's local ground.

Exxxx vector 0 VCVS vector_out local_ground  1

regards

scott



--=20
Scott McMorrow
Teraspeed Consulting Group LLC
2926 SE Yamhill St.
Portland, OR 97214
(503) 239-5536
http://www.teraspeed.com



Ingraham, Andrew wrote:

>I admit to not having used digital vectors....
>
>But can't you just use controlled sources(ex: VCVS), to translate from
>ground-referenced to floating?
>
>Andy
>
>
> =20
>
>>i am simulating in Hspice, using this digital vector. it is the simple
>>way
>>to define a vector (or vectors) of zeros and ones. the problem is that
>>it
>>connects, in the spice netlist, between the node in0 (see file
>>attached) and
>>gnd. but sometimes  one does not want to connect it to gnd but to
>>another
>>node. is there a way to do it?
>>
>>   =20
>>
>
>------------------------------------------------------------------
>To unsubscribe from si-list:
>si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
>or to administer your membership from a web page, go to:
>http://www.freelists.org/webpage/si-list
>
>For help:
>si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
>List archives are viewable at:    =20
>               http://www.freelists.org/archives/si-list
>or at our remote archives:
>               http://groups.yahoo.com/group/si-list/messages=20
>Old (prior to June 6, 2001) list archives are viewable at:
>               http://www.qsl.net/wb6tpu
> =20
>
> =20
>



------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http://www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field

List archives are viewable at:    =20
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages=20
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu
 =20
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http://www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field

List archives are viewable at:
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu


------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http://www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field

List archives are viewable at:     
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages 
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu

Other related posts: