Austin, If you are using a DxDesigner->Allegro workflow, I can sum up the situation quite succinctly... 1) If you've got any more than a couple of differential...
It's really not the end of the world.
- Completely ignore EPD's 'constraints support'.
- Manually add NET_PHYSICAL_TYPE and NET_SPACING_TYPE attributes to...
Hi Daniel, ... I have both Allegro and PADS, and need to support both. ... I have 15.2. ... That doesn't make sense to me. Why do you say that? ... OK, but...
ePD 2004 SP1 which us being released at the end of September will support Allegro 15. If you need the interface now Mentor support has come up with the...
What is the best way to install EPD 2004 onto 5 different users with only one config file, so that all users will share the same files, libraries, borders…...
First of all, install ePD on a server somewhere and have your users map a drive to the server and then run the configurator from the server. This will setup...
... netlist. I ... I'll answer this one first... the 'DIFF_PAIR' is a special attribute, because it refers to the name of a second net 1) You have to...
Hi Daniel, ... Not sure what you mean. I use "DIFF_PAIR=uniqueid" and it goes through to the PCB tools just fine. Say I have a pair called H_DX_P and H_DX_N....
... through to ... H_DX_N. I add ... they ... editor ... a comma, ... I was really referring the the DxDesigner function where you select two nets and click...
Hi Daniel, ... Ah! Thanks for the clarification. ... Glad to have you confirm that. It seems to work fine. ... I agree. These attributes/rules *really* need...
Hi, I've been trying to understand how to use PCBCLASS, and I have created a few of them as tests. Now, I can't figure out how to delete them... How do you ...
For Allegro the attribute needs to be attached to both nets. The attribute value should for both nets should be same; the value identifies the differential...
What you're asking is handled very well in Allegro's Constraint Manager (CM) v15.x. If you use naming conventions for units of a diff. pair, then to...
... inner and outer layers. I don't believe PADS handles this, I know Allegro does in it's 600 series, but not in it's 200 series, unfortunately. This has to...
If you like you can easily accomplish this in Allegro's Constaint Manager. Then backannotate to Viewdraw so that both the layout and schematic are in synch. ...
Hi Varun, ... Yes, from what I can tell, that is in the "600" series, not in the "200" series though (and not available with the 200 w/ performance option...
Hi John, ... But...the question is, what attribute should I use to group signals? I'm pretty much muddling my way through all this...darn, the documentation is...
If I understand your question correctly, the attribute name to group signals together is "BUS_NAME" Therefore, say you have 5 signals which you want to be part...
Hi Austin, Depending on your stack-up you can assign a different trace with and gap on inner layers for a net or group of nets (CLASS) in PADS using...
Hi Christian, ... Ah, that's a good suggestion. ... But, if you can back annotate them, you should be able to specify them up-front, right? Do you have a...
Hi, ... I'm not referring to grouping a bus, like DQ[31:0], but grouping ALL the signals, like SDRAM_DQ[31:0] and SDRAM_A[12:0] and SDRAM_RAS_L and SDRAM_CAS_L...
Hi Austin, I’m not sure that all the attributes can pass between PADS and DxDesigner. If you look at the ViewPCB window while generating the PCB netlist,...
PCBCLASS is the constraint controlling attribute. Constraints are attributes loaded into another database file so that they don't clutter up the schematic....
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