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About scan Mbist and BSD design!!

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flyingjk

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Now,I am using synopsys dft-compile do mbist&BSD design.
How can I integrate Mbist with bsd using JTAG control Mbist circuit?
I insert scan chain before design mbist&bsd,but ,the inserted scan chain will be removed when I insert the mbist&bsd circuit.
what's the order of doing scan,mbist and bsd.
3ks
 

First you must insert your MBist after this, before you insert the boundary scan you mus decalre the new instruction for the TAP and the declaration of the Data Register asociated for the Tap instruction. (in the Data Register you add de activation, status and other functions you need for you MBIST)

when you have done the configuration of the new registers you can insert the BSD.
 

Hi Garbielhijo
Thanks for your help!

I still have some problem.
What's the order of insert scan chain,mbist and bsd.
This is my order :
scan chain --> mbist&bsd
But,the scan chain will be removed when I insert the mbist&bsd circuit.
What can I do?
 

you should do MBIST&BSD first, thereafter, insert internal scan in DC when run synthesis.
 

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