[PCB_FORUM] Back annotate Allegro to OrCAD

Hello All,
 
I am having difficulties back annotating the pin swaps of a BGA.  The macro we 
use to create the swap list seems to have issues when I switch a pin to a null 
net pin.  For some reason the null net pins are jumping all over the different 
parts.  (U1A pin goes to U1C, U1B pin to U1D, etc.)  Could someone advise easy 
way to make the .swp list?  On this board we are using the telesis.dll output 
for the netlist if that makes any difference.
 
Thank you again.> Date: Tue, 16 Dec 2008 13:36:10 +1300> From: 
richard.moffat@xxxxxxxxxxxxxxxxxxx> To: icu-pcb-forum@xxxxxxxxxxxxx> Subject: 
[PCB_FORUM] Re: Assigning Xnet to a Relay> > PS - > > The component must have 
the CLASS property set to DISCRETE. (Not IC or IO.) This is crucial.> > (And of 
course, view the below drawings in ascii.)> > C,> R.> > >>> "richard moffat" 
<richard.moffat@xxxxxxxxxxxxxxxxxxx> 16/12/2008 12:35 p.m. >>>> Hello Seiji> > 
Yes, it can be done for non-discrete components. > > It's been a while but 
here's an example of how a resistor network is set up:> > Pins 1,2,3,4,6,7,8,9 
-> single-ended pins> Pins 5,10 -> connected inside, tied high or low 
externally. Pins are connected to other end of resistors. > > 10 9 8 7 6 > o o 
o o o> | | | | |> | R R R R> | | | | |> -----------------> | | | | |> R R R R 
|> | | | | |> o o o o o> 1 2 3 4 5> > > In your Setup Advisor:> > 1 - Set up 
everything for DC nets and Device Setup> 2 - Go to SI Model Assignment> 3 - 
Select the relay component> 4 - Create Model> 5 - Create Espice model> 6 - 
Delete the entire Single Pins entry> 7 - Type "1 5 2 5 3 5 4 5 6 10 7 10 8 10 9 
10" into the Single Pins entry (without quotes)> This defines the pairs.> 8 - 
Leave the Common pin blank> 9 - Hit OK> 10 - Edit model.> > For my resistor 
network it will end up like this:> ========================> 
("RES_NETWORK_51R_8_51R" > ("ESpice" > ".subckt RES_NETWORK_51R_8_51R 1 5 2 5 3 
5 4 5 6 10 7 10 8 10 9 10> R1 1 5 51> R2 2 5 51> R3 3 5 51> R4 4 5 51> R5 6 10 
51> R6 7 10 51> R7 8 10 51> R8 9 10 51> .ends RES_NETWORK_51R_8_51R> ") > 
("PinConnections" > ("1" "5") > ("5" "1") > ("2" "5") > ("5" "2") > ("3" "5") > 
("5" "3") > ("4" "5") > ("5" "4") > ("6" "10") > ("10" "6") > ("7" "10") > 
("10" "7") > ("8" "10") > ("10" "8") > ("9" "10") > ("10" "9")> )> )> 
========================> > Note the above example does not know about the 
internal tying of pins 5,10.> > > Another example is a resistor array of 4 
resistors:> > 8 7 6 5> o o o o> | | | |> R R R R> | | | |> o o o o> 1 2 3 4> > 
Steps 1-5 - same as before> 6 - Delete the entire Single Pins entry> 7 - Type 
"1 10 2 9 3 8 4 7 5 6" into the Single Pins entry (without quotes)> 8 - Leave 
the Common pin blank> 9 - Hit OK> 10 - Edit model.> > For my resistor array it 
will end up like this:> ========================> ("RES_NETWORK_51R_8_51R" > 
("ESpice" > ".subckt RES_NETWORK_51R_8_51R 1 8 2 7 3 6 4 5> R1 1 8 51> R2 2 7 
51> R3 3 6 51> R4 4 5 51> .ends RES_NETWORK_51R_8_51R> ") > ("PinConnections" > 
("1" "8") > ("8" "1") > ("2" "7") > ("7" "2") > ("3" "6") > ("6" "3") > ("4" 
"5") > ("5" "4")> )> )> ========================> > I hope I got everything 
right. As I said, it's been a while since I did it.> > > Your simpler relay 
will be similar to these, although I do admit I'm not sure exactly how without 
further work. I suggest you look at the above examples and experiment a little. 
You may be able to use the Common Pin field.> > Hope this helps.> > Cheers,> 
Richard> > > > > __________________________> Richard Moffat> PCB Specialist 
Engineer> Allied Telesis Labs> ph. +64 (3) 3393000> 
richard.moffat@xxxxxxxxxxxxxxxxxxx > > > >>> On 16/12/2008 at 8:31 a.m., in 
message 
<CABB6353DE368746B974D9CC89B1D06D01AE2EF5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>, 
"Gerry Meier" <gerry.meier@xxxxxxxxxxxxxx> wrote:> > Xnets are for passive 
devices primary resistors, capacitors. You would have to set the relay model up 
as a discrete device I would suppose.> > > Gerry Meier, Sr. PCB Designer> 
Freedom CAD Services. Inc> Voice: (256)776-7470 or (603) 864-1350> 
Email:gerry.meier@xxxxxxxxxxxxxx > visit us at http://www.freedomcad.com > > > 
> > From:icu-pcb-forum-bounce@xxxxxxxxxxxxx 
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of seiji arimitsu> Sent: 
Monday, December 15, 2008 12:49 PM> To: icu-pcb-forum@xxxxxxxxxxxxx > Subject: 
[PCB_FORUM] Assigning Xnet to a Relay> > > Hello All,> > I am trying to assign 
the Xnet property to a 8 pin relay.> > 1 2 3 4> O O O O> O O O O> 8 7 6 5> > 
Pins 1, 6, and 7 are GND and pin 2 is PWR. > > pins 4 and 5 is same net and 
would like to set up the xnet with Pin 8.> > How would I set the device model 
to accomplish this? If anyone could help I would appreciate it.> > Thank you,> 
Seiji> > > > > This correspondence and any attachments are considered 
confidential. If you are not the intended recipient, please notify Freedom CAD 
Services, Inc. immediately by either replying to this message or by sending an 
email to operations@xxxxxxxxxxxxxx; please destroy all copies of this message 
and any attachments. Thank you. > NOTICE: This message contains privileged and 
confidential> information intended only for the use of the addressee> named 
above. If you are not the intended recipient of> this message you are hereby 
notified that you must not> disseminate, copy or take any action in reliance on 
it.> If you have received this message in error please> notify Allied Telesis 
Labs Ltd immediately.> Any views expressed in this message are those of the> 
individual sender, except where the sender has the> authority to issue and 
specifically states them to> be the views of Allied Telesis Labs.> 
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