wjccentury
Junior Member level 2
Following is my understanding, I hope somebody can help me for understanding.
There are two kinds of atpg test: low speed test and at-speed test.
When at-speed test, I found we didn't need to change the frequence of test clocks.
The difference between low speed and at-speed is in its SPF file.
In SPF file of at-speed test, it has launch, capture and launch_capture procedures. And their waveform tables are different from default waveform table.
My question is :
How can we realize at-speed test ? Just control the test signals : test clock and test reset and test enable ? When at-speed test, the frequence of test clock can be changed ?
Thanks for your help !!!!!
There are two kinds of atpg test: low speed test and at-speed test.
When at-speed test, I found we didn't need to change the frequence of test clocks.
The difference between low speed and at-speed is in its SPF file.
In SPF file of at-speed test, it has launch, capture and launch_capture procedures. And their waveform tables are different from default waveform table.
My question is :
How can we realize at-speed test ? Just control the test signals : test clock and test reset and test enable ? When at-speed test, the frequence of test clock can be changed ?
Thanks for your help !!!!!