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USDB support » History » Version 1

jun chen, 03/27/2025 12:23 AM

1 1 jun chen 
# USDB support
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300 





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Developer: ShuMiao PE: JiaXiao





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PV: SiQi





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Date: 2023/12





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## in-house utility {SiQi)





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vcddiff D叩DD (SiQi todo)





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叩田叩叩DD叩叩DDDusdb-> vcd, DDvcd-> usdb叩D执叩O叩D 





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D叩DD叩





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```





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source /scratch02/rnd/sqchen/work—to—do/GB—VCD/.VD/setup.csh





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1.usdb-> vcd:	usdb2vcd -i �input—usdb—file -o �output—vcd—file





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2.vcd->usdb:	vcd2usdb -i �input—vcd—file	-o �output—usdb—file





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```





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![](clipboard-202503270022-82q9e.png)





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## Spec and function {Shumiao)





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参伲D料叩 





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USDB API specification file: EDA200D叩接叩.pdf 





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Discussion with USDB: DDUSDBD叩DO.pptx





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D叩叩叩parse  usdbDDO叩D叩叩是叩见叩供叩parserDD叩叩译叩见叩供叩libOD这叩O叩支叩cent7DDDD叩叩cent7O叩译binaryDDDOD叩O叩图叩示叩





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![](clipboard-202503270022-qbuor.png)





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如叩使叩extract_usdb叩





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option叩D释叩





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-input_file叩叩DusdbDD叩O叩D 





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-output_file:  叩DOODO叩vcdO叩DDODDDDO叩DusdbOOvcd





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-start_time: DDDDusdbOOD叩





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-end_time: DDDDusdb叩叩D叩





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-refine_path: DDDDusdbDD叩strip掉叩层叩 eg1. 叩DusdbOOvcdO叩叩





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extract—usdb -input—file example.usdb -output—file demo.vcd -start—time �STARTTIMF -end—time �FNDT IMF





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eg2. DDusdbDOswitching activity:





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extract—usdb -input—file example.usdb -start—time �STARTTIMF -end—time �FNDTIMF -refine—path �PAT:





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如叩DD vcdD叩叩 tool: vcddiff 位DDD叩DD叩





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/reg/util/vp/util—scripts/work—util/vcddiff test1.vcd test2.vcd > diff.log





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Case, regression {ShuMiao)





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PS叩 Cases必须叩cent7叩binary□D叩叩DDO0支叩cent6





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Case 1. 通叩cht□D hvp门D usdbD叩咖叩将叩转叩叩叩价叩vcdD叩叩 





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a)D叩vcd2usdb叩DDDOdemo_golden.vcdOOOdemo.usdbO叩





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vcd2usdb -i demo—golden.vcd -o demo.usdb





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b)DDextract_usdbOOOdemo.vcdO叩





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extract—usdb -input—file demo.usdb -output—file demo.vcd





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D田D叩叩DDvcddiffD衄demo_golden.vcdDdemo.vcdO叩,  ODdiff.logOD叩pass





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vcddiff test—golden.vcd demo.vcd > diff.log





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example case:





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/scratch02/rnd/smli/usdb—case/usdb/usdb—to—vcd/test.tcl





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Case 2. 搭叩cht power所叩要叩design, 门D usdbD叩咖叩D usdb叩标工switching activity信息咖生叩功叩分D结叩：





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a)D叩vcd2usdb叩D拿叩叩Dcase叩xxx.usdbO叩





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b)D田cht design, DOtiming analysis后D叩叩DOxxx.vcdD叩叩叩power analysis





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extract—switching—activity -format vcd -file xxx.vcd -refine—path �PAT: report—power—anaysis > golden/power—golden.rpt





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c)DDswitching activityD叩Dxxx.usdbO叩D叩叩叩power analysis





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set—switching—activity -clear





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extract—usdb -intput—file xxx.usdb -refine—path �PAT: report—power—anaysis > power.rpt





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D田D叩叩





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1.Switching  activity叩DDDDDDcheckpointD衄DD叩DD 





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2.D耗叩DOD叩





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qa—report—power—analysis design golden/power—golden.rpt power.rpt





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example case:





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/scratch02/rnd/smli/usdb—case/usdb/usdb—to—pow/test.tcl





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Schedule and result {JiaXiao)





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![](clipboard-202503270023-1ota6.png)