Scan Shift Register.

[abu9022]

Can you help me how to design Scan Shift Register?
what is the difference between Scan Shift Register and Scan Chain?

I am Using Scan Shift Register(2n+1) for Test Pattern Generation

 

[maulin sheth]

Scan Chain is the Chain of scan shift register....so the number of connected scan register comes into scan chain...There is not that much difference between Scan Chain and scan shift register....

 

[zjushmily]

you'd better first replaced normal DFF with scan DFF, then use dft-compiler to insert dft to make the scan chain.