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本帖最后由 1127208631 于 2012-3-12 17:20 编辑
如题,
在run nmLVS时,在抽取文件lvs.rpt.ext中出现了很多warning。
Note: LVS已经PASS了,现在就是在Debug文件中出现的warning,error等。
其中一些典型waring如下:
第一类:
Extraction Errors and Warnings for cell "win_corner"
-----------------------------------------------------------------------
WARNING: Open circuit - Same name on different nets:
Name: "VDD"
(1) at location (22.045,240.95) on layer 139 on net id 2
(2) at location (75.905,240.95) on layer 137 on net id 2
(3) at location (0.05,215.475) on layer 135 on net id 3
(4) at location (25.525,240.95) on layer 135 on net id 3
.....
The name was assigned to net 2 .
第二类:
Extraction Errors and Warnings for cell "ICV_1111"
---------------------------------------------------
WARNING: Stamping conflict in SCONNECT - Multiple source nets stamp one target net.
Net 6 is selected for stamping.
Rejected nets:8
第三类:
Extraction Errors and Warnings for cell "u3s_45"
------------------------------------------------------------------
WARNING: Unattached label:
Name "gd" at location (89.22,-371.78) on layer 126
WARNING: Unattached label:
Name "gd" at location (291.63,-372.41) on layer 126
WARNING: Unattached port "vp" at location (87.3,-573.81) in cell “u3s_45”
第四类:
Extraction Errors and Warnings for cell "u5_32"
-------------------------------------------------------
WARNING: Short circuit - Different names on one net:
Net Id: 1
(1) name "VDD" at location (37.78,5.2) on layer 135
(2) name "VDD" at location (37.78,70) on layer 135
(3) name "VDD" at location (37.78,77.2) on layer 135
(4) name "VDD" at location (37.78,84.4) on layer 135
(5) name "VDD" at location (37.78,91.6) on layer 135
(6) name "VDD" at location (37.78,98.8) on layer 135
(7) name "VDD" at location (37.78,106) on layer 135
(8) name "VDD" at location (37.78,113.2) on layer 135
(9) name "VDD" at location (37.78,120.4) on layer 135
(10) name "VDD" at location (37.78,127.6) on layer 135
(11) name "VDD" at location (37.78,134.8) on layer 135
(12) name "VDD" at location (37.78,142) on layer 135
(13) name "VDD" at location (37.78,149.2) on layer 135
(14) name "VDD" at location (37.78,156.4) on layer 135
(15) name "VDD" at location (37.78,163.6) on layer 135
(16) name "VDD" at location (37.78,62.8) on layer 135
(17) name "VDD" at location (37.78,19.6) on layer 135
(18) name "VDD" at location (37.78,26.8) on layer 135
(19) name "VDD" at location (37.78,55.6) on layer 135
(20) name "VDD" at location (37.78,12.4) on layer 135
(21) name "VDD" at location (37.78,34) on layer 135
(22) name "VDD" at location (37.78,48.4) on layer 135
(23) name "VDD" at location (37.78,41.2) on layer 135
(24) name "vp" at location (5,166.41) on layer 137
(25) name "vp" at location (11,166.41) on layer 137
(26) name "vp" at location (35,166.41) on layer 137
(27) name "vp" at location (17,166.41) on layer 137
(28) name "vp" at location (23,166.41) on layer 137
(29) name "vp" at location (29,166.41) on layer 137
The name "VDD" was assigned to the net.
有些确实在单个cell里是open或者short了,但是有些根本没有open或short,确报出来了,而且在block里也报出text open的问题。
哪位大侠能够指点一下,怎样Debug这些warning啊,另外在runset中有办法设置选项来消除或者减少这些warning吗?非常感谢!
另外,想请问下lvs runset中有什么选项可以忽略layout本身带的所有TEXT?
A:慢慢Debug,确认 |
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