[PCB_FORUM] Re: electrical constraint manager, timing

  • From: <sjcharles@xxxxxxx>
  • To: <icu-pcb-forum@xxxxxxxxxxxxx>
  • Date: Mon, 4 Jul 2005 20:25:04 -0400

Group: I have more questions since posting this so i will add another question. 
Any response is appreciated.
If the clk signal is the target, do i set this up in MIN/MAX Propagation Delays 
of under the Total Etch Length? Do i need to set up in both places? 
Thanks again
Sam
> 
> From: <sjcharles@xxxxxxx>
> Date: 2005/07/04 Mon PM 07:24:50 EDT
> To: <icu-pcb-forum@xxxxxxxxxxxxx>
> Subject: [PCB_FORUM] Re: electrical constraint manager, timing
> 
> I set the clock up in in ecset in NETS folder.PCLK is set up to be 2300-2500 
> mils in length. The delta tolerance for the rest of the match group is 
> 200mils =/- 10 mils. Yet when i auto route my clk is about 3000 mils and the 
> rest fo the match group are about 4500 mils. Where do i set up the prop delay 
> of the PCLK?
> > 
> > From: "Austin Franklin" <austin@xxxxxxxxxxxx>
> > Date: 2005/06/30 Thu AM 11:28:44 EDT
> > To: <icu-pcb-forum@xxxxxxxxxxxxx>
> > Subject: [PCB_FORUM] Re: electrical constraint manager, timing
> > 
> > Under net/routing/relative prop delay, set up a group that contains your
> > clock and other signals you want related to this clock.  Set the group match
> > length value in the group name heading under "delta:tolerance", such as
> > "0:-300" (note the "=", typically 300 will mean +- 300), and it will then be
> > assigned to all the signals in that group.  Then, select the clock and set
> > it as "target".
> > 
> > Regards,
> > 
> > Austin
> > 
> > > -----Original Message-----
> > > From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> > > [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]On Behalf Of
> > > sjcharles@xxxxxxx
> > > Sent: Thursday, June 30, 2005 11:12 AM
> > > To: icu-pcb-forum@xxxxxxxxxxxxx
> > > Subject: [PCB_FORUM] electrical constraint manager, timing
> > >
> > >
> > > Group: how do i set up a constraint for my clock signal to arrive
> > > at it destination where it is equal to or less the arrival of the
> > > data signals.
> > > I'm using pcb si 610. any suggestions would be appreciated.
> > > Thanks, Sam
> > 
> > -----------------------------------------------------------
> > To subscribe/unsubscribe: 
> >     Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx
> >     with a subject of subscribe or unsubscribe
> > 
> > To view the archives of this list please login at
> > //www.freelists.org. Our list name is icu-pcb-forum
> > or go to //www.freelists.org/archives/icu-pcb-forum/
> > 
> > Problems or Questions:
> >     Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx
> > 
> > Want to post a job listing ?  DON'T DO IT HERE!  
> > Better yet, join our jobs listing forum.
> > 
> > SUBSCRIBE:  icu-jobs-forum-subscribe@xxxxxxxxxx
> > POST:       icu-jobs-forum@xxxxxxxxxx
> > -----------------------------------------------------------
> > 
> 
> -----------------------------------------------------------
> To subscribe/unsubscribe: 
>       Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx
>       with a subject of subscribe or unsubscribe
> 
> To view the archives of this list please login at
> //www.freelists.org. Our list name is icu-pcb-forum
> or go to //www.freelists.org/archives/icu-pcb-forum/
> 
> Problems or Questions:
>       Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx
> 
> Want to post a job listing ?  DON'T DO IT HERE!  
> Better yet, join our jobs listing forum.
> 
> SUBSCRIBE:  icu-jobs-forum-subscribe@xxxxxxxxxx
> POST:       icu-jobs-forum@xxxxxxxxxx
> -----------------------------------------------------------
> 

-----------------------------------------------------------
To subscribe/unsubscribe: 
        Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx
        with a subject of subscribe or unsubscribe

To view the archives of this list please login at
//www.freelists.org. Our list name is icu-pcb-forum
or go to //www.freelists.org/archives/icu-pcb-forum/

Problems or Questions:
        Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx

Want to post a job listing ?  DON'T DO IT HERE!  
Better yet, join our jobs listing forum.

SUBSCRIBE:  icu-jobs-forum-subscribe@xxxxxxxxxx
POST:       icu-jobs-forum@xxxxxxxxxx
-----------------------------------------------------------

Other related posts:

  1. Home
  2. icu-pcb-forum
  3. Archive
  4. 07-2005