DFT with LSSD cells - S1-error after when i run post-DFT drc

Status
Not open for further replies.
A

amar.reddy4020

Newbie level 3
Joined
Jan 12, 2009
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,300
dft lssd

Hi friends,
I got the S1-error after when i run post-DFT drc. I wrote out my net list then i found that my

SN pin of latch which is connected to permanent-1 in functional mode is now connected to

SCLK (Scan Slave Clock). Can anyone help me in debugging this. The scan type is LSSD.

Thanks in advance
 

Re: DFT with LSSD cells

You are using DC to do this?

What is S1? Sorry I don't have time to look up that in manual.

Because most design are DFF based, I doubt the tool's matrurity on LSSD if you have set configurations correctly according to manual.


 

Re: DFT with LSSD cells

S1: is scan chain blockage after (cell number is scan chain ) cells.

I'm using dc to do this and my protocol is perfect. I hope there is problem with LSSD State table in the Library.
 

DFT with LSSD cells

checkout this

http://www.asic-dft.com/Level%20Sensitive%20Scan%20Design%20(LSSD)%20Style.html
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…