Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

[SOLVED] Differential pair assigninment

Status
Not open for further replies.
P

pushpamone

Junior Member level 3
Joined
Aug 18, 2010
Messages
26
Helped
6
Reputation
12
Reaction score
5
Trophy points
1,283
Location
bangalore
Activity points
1,435
Hi,

Can anyone help me as how to assign differential pair in allegro 15.7.......i tried by opening setup tab but in tat i wont find Electrical constraint option to set ECSets.


Reguards,
prathibha
 

i have created a utility form creating differential pair, to buy it please pm me. it is very cheap
 

Hi,

I have been using the higher version of allegro since 2 years so cannot recall properly the menu of 15.7.

Check you have Routing as menu item , in that you will have something for differential pairs .

If you did not get that let me know, I will go back to 15.7 and check that.
 

pushpamone said:
No i did not get ....can u just guide me
Click to expand...

Hey,

The Menu name is Logic in that you will find Assign Differential Pairs.

When you select that you will get a GUI for selecting the nets and assign them as differential.

But for setting the constraints you have to do that in the constraints setting tab.
 

I have checked in that logic tab but in that tab i have only 3 options i.e,identify DC nets,assign Resdes,auto rename refdes and i dint find assign differential pair option
 

I am using 15.7 .
1.select SETUP--> electrical constrain set (picture1)
2. select NET --> differential pair
3. select the nets simultaneously (using CTRL key )you need differential property (picture2)
4. Right click --> create -->differential pair
5. there you will get a window where you can name the differential pair (default name is DP*)
6. click on create. Now differential pair is created.
7. new DP1 pair will come on the Top of the all net names ( picture3)
8 . There assign set values like 'primary gap and primary width' etc
9. now in PCB you can route differentially ( it will route as a pair when you route a single net).





 

It sounds like you are using Allegro L software. to have and use diff pairs you need to have Allegro XL.
 

Thanks alot but i dnt find that Electrical constraint option in setup..........even change editor also not working,so can anyone help me
 

I think your Allegro licence is not supporting this feature. You may atleast need "allegro PCB performance Option L" licence.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top