[PCB_FORUM] Re: Very interesting router...

Many folks run a fanout.do script to do the fanouts. It specifies
certain nets (i.e. power, gnd) and certain max lengths and runs a few
passes, lengthening for each pass.  Then it runs fanouts for signals
with less constraints on it.

An example:

fanout 5 (direction out) (max_len 100) (pin_type power)\
         (pin_share off) (via_share on) (share_len 100)
fanout 5 (direction out) (max_len 200) (pin_type power)\
         (pin_share off) (via_share on) (share_len 200)
fanout 5 (direction in_out) (max_len 100) (pin_type power)\
         (pin_share off) (via_share on) (share_len 100)
fanout 5 (direction in_out) (max_len 200) (pin_type signal) (pin_type
power)\
         (pin_share off) (via_share on) (share_len 200)

You get the idea...

-- 
George Patrick
Tektronix, Inc.
Central Engineering, Engineering Design Services
P.O. Box 500, M/S 39-512
Beaverton, OR 97077-0001
* 503-627-5272 (voice)     * 503-627-5587 (fax)
http://www.tektronix.com    http://www.pcb-designer.com
 
"Off-Grid and Proud of it!"


-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Gennadiy
Kiryukhin
Sent: Tuesday, May 23, 2006 13:50
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Very interesting router...


Why does router create unreasonably long and strangely twisted fanouts 
for ground and power signals?

Thanks,
Gennadiy
-----------------------------------------------------------
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 go to
http://www.freelists.org/archives/icu-pcb-forum/

Problems or Questions:
Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx
-----------------------------------------------------------
-----------------------------------------------------------
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 go to 
http://www.freelists.org/archives/icu-pcb-forum/

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

Other related posts: