Hello, any help would be appreciated! Thank you in advance!
1.) I have come across this odd limitation of auto rout feature for OrCAD, or it could very well be some configuration that I am missing. The problem happens when I'm auto routing the broad, the auto router will not use any buried or blind (B/B) vias. I have the B/B vias defined and selected for use in the Constraint Manger. The auto router would only use the through via, from top to bottom only, and ignore all other inter-layer via. I can use the inter"layer when I do manual routing. Either the smart router nor the specifying route passes would put the B/B vias in. Is there anything I over looking? Please advice. Thank you.
2.) The other constraint I'm stuck on is the maximum layers the auto router would route. I find the the auto router will only route when the number of conductor layers is six or below. If I declare seven conductor layers, the auto router will start after I press the "route button" but would exit immediately. I looked over the specctra.log and could not spot any error or warning....
Please advice, Thank you again.
This board I'm doing is a bit odd in that all components are through holes, and there are a lot of nets in a pretty tight space. I would manual route expect it would take me more time than I would like, so auto routing looks pretty attractive. This actually is the first time I've used the auto route feature, so if I forgot to mention any important info please let me know. Thank you.