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Front End Design Using Cadence Tool - Analyze and Compile

Authors: Hetaswi Vankani, Adithya Venkatramanan,and Dr. Dong S. Ha

2. Simulate and Analyze Waveform

A. SimVision – This is the Cadence tool used to analyze the waveform.

i. Type ‘simvision’ in the command prompt. Make sure that the Cadence tools path are set. If not, first set paths by typing Cadence.

ii. Once  the tool is invoked, a GUI as shown in fig. 5 will appear: 

Fig. 5. SimVision – open database and load updown_counter.dump
Fig. 5. SimVision – open database and load updown_counter.dump

a. Select File → Open Database

b.  Make sure ‘Files of type: All Files (*)’ is selected so that .dump file is visible.

c. Select updown_counter.dump and hit ‘open’

iii. Next a file translation window would open. Hit ‘OK’ 

Fig. 6. Load translation in SimVision
Fig. 6. Load translation in SimVision

iv. Step iii. Will cause various signal to open. Select the ‘tb_cnt_updown’ in the design browser and then hit the waveform button as shown in fig. 7 

Fig. 7. Design browser and toWaveform in SimVision
Fig. 7. Design browser and toWaveform in SimVision

v. Next a waveform window as shown below in fig. 8 would appear. 

Fig. 8. Default waveform window in SimVision – appears on adding signals
Fig. 8. Default waveform window in SimVision – appears on adding signals

vi. Hit ‘=’ sign next to the simulation time frame to simulate and observe values.

Fig. 9. Window that appears on starting simulation
Fig. 9. Window that appears on starting simulation

vii. On hitting ‘+’ sign next to signal name, the expanded waveforms can be observed 

Fig. 10. Expanded waveform in SimVision
Fig. 10. Expanded waveform in SimVision

 

One can alter the test bench to check the different values of output signals. Simulation time can also be changed. Once the functionality is verified, exit the tool.


Comments to: ha@vt.edu

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