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[SOLVED] DC cannot find scan equivalent cells in Nangate Library

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ebrahimi.khoy

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I am using synopsis design compiler and Nangate Library for synthesis. When I want to insert scan chain in circuit I got the following message

Warning: No scan equivalent exists for cell iwb_biu/wb_cyc_o_reg (DFFR_X1). (TEST-120)

There is SDFFR_X1 cell which seems to be scan equivalent of this cell. This is same for all flip-flops and finally it cannot insert scan chain.
My script is working fine with other libraries. Is there any method to introduce scan cells to design compiler?
 

I found the reason. The thing is that test_cell annotation is missing in this library. The issue is resolved after I manually add such notations to scan flip-flops.
 
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