The Designer's Guide Community
Forum
Welcome, Guest. Please Login or Register. Please follow the Forum guidelines.
May 5th, 2024, 9:31pm
Pages: 1
Send Topic Print
Analog bus limitation, any work-around ? (Read 3670 times)
ekne
New Member
*
Offline

Yupp, I'm a viking

Posts: 3
San Diego
Analog bus limitation, any work-around ?
Nov 04th, 2005, 8:55pm
 
Hi
Using AMS Designer and want to do:

   electrical amx;
   real V_amx_3;
   real V_amx_2;
initial begin

   #50;
    V_amx_3 = V(amx[3]);
    V_amx_2 = V(amx[2]);
etc.....


but get an ncelab error that this is not supported i.e.
analog bus in "digital domain".

So is there a way to work-around this ?

Not, talking about changing the schematic to not use an
analog bus i.e. define two separate signals.

Why isn't this supported, don't really see why it should
be a limitation at all.
(spice/digital busbit notations < vs [ ? perhaps ? but  
 that shouldn't be a limitation)

Thanks //BEE

 ???
Back to top
 
 
View Profile   IP Logged
jbdavid
Community Fellow
*****
Offline



Posts: 378
Silicon Valley
Re: Analog bus limitation, any work-around ?
Reply #1 - Nov 9th, 2005, 9:26am
 
I wrote up a great idea, thats NOT the answer to your problem..

Yes workaround is easy.. don't do the conversion in the logic domain.. do it in the analog block..  



Back to top
 
 

jbdavid
Mixed Signal Design Verification
View Profile WWW   IP Logged
jbdavid
Community Fellow
*****
Offline



Posts: 378
Silicon Valley
Re: Analog bus limitation, any work-around ?
Reply #2 - Nov 9th, 2005, 9:31am
 
ie:

   electrical amx;
   real V_amx_3;
   real V_amx_2;
analog begin
   @(timer(50n)) begin  
// this is a ONE time event, like initial block
// initial begin
//    #50;
    V_amx_3 = V(amx[3]);
    V_amx_2 = V(amx[2]);
etc.....
Back to top
 
 

jbdavid
Mixed Signal Design Verification
View Profile WWW   IP Logged
Andrew Beckett
Senior Fellow
******
Offline

Life, don't talk to
me about Life...

Posts: 1742
Bracknell, UK
Re: Analog bus limitation, any work-around ?
Reply #3 - Nov 15th, 2005, 11:12am
 
Hi BEE,

There's a PCR for this - 295207. It's an implementation limitation at the moment - I've asked for a status update on this PCR.

Regards,

Andrew.
Back to top
 
 
View Profile WWW   IP Logged
ekne
New Member
*
Offline

Yupp, I'm a viking

Posts: 3
San Diego
Re: Analog bus limitation, any work-around ?
Reply #4 - Nov 15th, 2005, 7:31pm
 
Thanks Mr Andrew
I thought I give this forum a try. Very interesting one.
Will keep on returning to it.  ::)

Thanks again.
 //BEE
Back to top
 
 
View Profile   IP Logged
Pages: 1
Send Topic Print
Copyright 2002-2024 Designer’s Guide Consulting, Inc. Designer’s Guide® is a registered trademark of Designer’s Guide Consulting, Inc. All rights reserved. Send comments or questions to editor@designers-guide.org. Consider submitting a paper or model.