Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Cadence First Encounter & flip flops

Status
Not open for further replies.
M

mathi

Junior Member level 2
Junior Member level 2
Joined
May 18, 2006
Messages
23
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,452
HI all,

I trying to do gate-level simulation after place and route. I saved the netlist from encounter but when i try to simulate it, it complains about too few arguments for flip flop instances, missing QN (complementary Q). I checked the library file and QN is declared there. Is there a way I can force encounter to have QN for flip flop instances?

Mathi
 

I THINK...


Your library has a provision for outputs, Q and QBAR for Flip - Flops,
ex : DFFCL01(D,clk,clr,Q,Qbar)

where as

in your design you might be using only Q of that as input to another instance.

ex : d1 (D,clk,clr,Q)
So, that will be only a warning that Qbar is not connected.

By the way, which technology are you using??
 

    M

    mathi

    Points: 2
    Helpful Answer Positive Rating
But simulator is not ignoring this warnings, for this we need to change rtl. becoz i can't change librarise
Thanks
 

I am using tsmc 0.18. Is there a way I can force encounter to include the Q bar as well? I don't want to change the code cause its 1000s of lines.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top