urgent help need for Constraint manager in Allegro 16.3

[jack_pcb]

Hi ,
i am using Allegro 16.3 , i want to do work on my constraint manager ,i looked in allegro help but not find it much helpfull .
pls can anyone provide any doc. or ppt to understand the conastainr manager rule setting for Diff pair ( its length matching ) and other relative propogation delay matching ,pin pairs ,

Thanks in advance

 

[kabaleevisu]

HI Jack,
https://www.parallel-systems.co.uk/ you may be get video, (you can not get all type of constraint manager setting.)what is query post it i will try to help u

https://www.parallel-systems.co.uk/images/PDF/diffpairs_Cadence_App_Note_165.pdf

 

[jack_pcb]

thanks Kapil ,

I am using DDR 2 and here i want length match for Address and make T points from Controller to 2 Memory Devices and length match it .there are Diff pairs also to match upto 5 mils ,so i need help to update all in Constraint manager .

Thanks in advance

 

[kabaleevisu]

Hi JACK,
For Electrical constraint setting make Class for (90 or 100 E )Differential pair (Name may be like that Diff_90E) and add the all the differential pair .

 

[jack_pcb]

Hi ,

pls need help for DDR 2 ,Address Tpoint creation in Allegro 16.3 , i am also tyring SigXplorer , pls help

 

[kabaleevisu]

hi jack,
which net r u want to make t-point select that net using net scheledul and then right click insert T point

 

[mareeswaran]

hi jack
if u have another brd file just export the tech.file, and import ur latest file.

thanks & regards,
Mareeswran.k

 

[jack_pcb]

hi ,

thanx for the reply Mareeswran . I want to implement rules in Constraint Manager for DDR 2 .I have gone through the help file and books ,but i do not find interactive help for how to set Length matching for all Data and Address/Control lines and how to set T-points for Address/Control and their Lenght matching in Allegro 16.3 .
Pls help , i need it very urgent .If their is any paid training ( Online) pls suggest .I have all Cadence Help data and Books ,so i am looking something practical .

Thanks