Core_EDA

# USDB support

300 

Developer: ShuMiao PE: JiaXiao

PV: SiQi

Date: 2023/12

## in-house utility {SiQi)

vcddiff D叩DD (SiQi todo)

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

D叩DD叩

```

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

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

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

```

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

## Spec and function {Shumiao)

参伲D料叩 

USDB API specification file: attachment:"EDA2数字波形接口.pdf" 

Discussion with USDB: attachment:"国标USDB问题解答.pptx"

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

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

如叩使叩extract_usdb叩

option叩D释叩

-input_file叩叩DusdbDD叩O叩D 

-output_file:  叩DOODO叩vcdO叩DDODDDDO叩DusdbOOvcd

-start_time: DDDDusdbOOD叩

-end_time: DDDDusdb叩叩D叩

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

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

eg2. DDusdbDOswitching activity:

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

如叩DD vcdD叩叩 tool: vcddiff 位DDD叩DD叩

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

Case, regression {ShuMiao)

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

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

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

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

b)DDextract_usdbOOOdemo.vcdO叩

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

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

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

example case:

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

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：

a)D叩vcd2usdb叩D拿叩叩Dcase叩xxx.usdbO叩

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

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

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

set—switching—activity -clear

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

D田D叩叩

1.Switching  activity叩DDDDDDcheckpointD衄DD叩DD 

2.D耗叩DOD叩

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

example case:

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

Schedule and result {JiaXiao)

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