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.

Help with XSA 50 and Xilinx ISE 7.1i

Status
Not open for further replies.

magnetra

Full Member level 5
Full Member level 5
Joined
Apr 21, 2005
Messages
263
Helped
10
Reputation
20
Reaction score
7
Trophy points
1,298
Location
27.45N, 85.20E KTM, NP
Activity points
3,375
While generating the bit file of my design, i got this warning
Code:
Running DRC.
WARNING:PhysDesignRules:372 - Gated clock. Clock net XLXI_23/_n0000 is sourced
   by a combinatorial pin. This is not good design practice. Use the CE pin to
   control the loading of data into the flip-flop.
DRC detected 0 errors and 1 warnings.
Creating bit map...
Saving bit stream in "dsss.bit".
Bitstream generation is complete.

what do i make of it?
If my question is incomplete, please let me know why more info i need to provide.

Regards
M
 

it means you use another combinational circuit to enable/disable the clock in your design...and the compiler advice you to use CE(clock enable) pin instead...so i think it would be better if you put your design in the forum to see where this warning come from
 

Thanks, I solved the problem myself.
I realize that not all VHDL codes are synthesizable because some tend to violate DRC (Design Rule Check). The problem was a DRC violation. Now that I solved, the ckt is working fine.

M
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top