* t. r5 {% H; F版主，看看老外的回答和binshenliu 是一样的处理方法。$ V. U& H: I3 \; P
问题：
" e+ X) U" t+ q& q0 pDRC errors in CAM, but not in Verify DesignWhen I run Verify Design in PADS Layout 9.2, clearance and connectivity check out fine, but when I run CAM, I get errors. I have no way of knowing WHAT those errors are; error markers are placed on the layers, but are they clearance errors? connectivity errors? And why would there be different results in CAM than in Verify Design, don't they use the same Design Rules?( n6 U6 x) B, l9 ~) Z: X/ }
0 ], `9 l p" c5 Z+ r4 M
! x4 I _' A# L. {回答：If your CAM documents include Split Planes, CAM will automatically perform a Plane Check as defined in Tools > Verify Design > Plane. The settings for your Plane check may be incorrect. Go to Tools > Verify Design > Plane, click Setup. Set the selection like the screenshot shown.4 e& Z+ w- `/ B* l% q
" c1 B* g; b, ^' H1 {! [4 m
- W. X5 C# m) f/ L' n1 w# L总结：Okay, folks, here goes. Thanks for all the suggestions; by putting them all together in a blender, I think I've found my problem(s)' ~# r" L& f( s% @/ A6 j" l D
' N% K; I3 `4 {/ _
1) I have multiple planes with duplicates of some of the nets on multiple planes. So, I would end up with plane islands on one plane, but it didn't matter to me because connectivity would be made on the other plane 2) When you run the "Connectivty" check, it verifies that all signals are connected, without regard to which plane they make that connection on. BUT, when you run the Plane check, it looks for islands and flags them as an error. (This was my main problem) 3) I have two separate planes on one layer assigned the same net. They are joined together on a different layer. But, when I ran the Plane test, it saw the two separate planes as an error. The only way I can get the error to go away is by adding a "dummy" trace connecting the two planes. 5 C- X- z2 Z$ Q" ]
Thanks to all for helping me to see the light. ) D$ T3 Z& `( |6 M z( V/ I) u
Barry ' m0 H% b( @0 g! I* k% ~
---------------------------------------------------------------------------
, Q9 c# n6 y8 J8 C1 \0 H# o
7 ^8 c: B. i7 K$ |% F2 O( W: _; G+ b/ k9 |; m( n/ ?4 f
| 
/1 
发表于 2015-9-1 08:52
QQ好友和群
QQ空间
腾讯微博
腾讯朋友
微信
收藏
支持！
反对！
楼主
