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doreen105
Joined: 04 Jun 2007
Posts: 13
Location: Beijin ,China
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 08 Jun 2007 4:21 How to add IO during synthesis |
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I have io lib,and the synthesis tool is RTL compiler of cadence.How to add IO to my design .When I import the gate netlist to encounter,will there a ring of IO around the core area???
Thanks very much
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sree205
Joined: 13 Mar 2006
Posts: 417
Helped: 30
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| 08 Jun 2007 8:48 How to add IO during synthesis |
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i don't know if i'm right or wrong. hopefully, ppl will correct me.
when i had a netlist, i opened the lib file to check for IO modules in it and used that to write a wrapper. i.e. for each input/output ports of my netlist, i made it pass through a io module in my lib.
the lef contains the physical information of the iopads. so, when netlist is imported to the backend tool, along with the io specification file, the pads get created.
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satyakumar
Joined: 18 May 2006
Posts: 186
Helped: 11
Location: Bangalore
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| 10 Jun 2007 18:04 Re: How to add IO during synthesis |
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Hi Sree205,
The procedure you said is corect, but it also need to add the location of the IO pad as a seperate constraint.
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deh_fuhrer
Joined: 25 Jul 2006
Posts: 422
Helped: 28
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| 05 Sep 2007 9:44 Re: How to add IO during synthesis |
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| sree205 wrote: |
i don't know if i'm right or wrong. hopefully, ppl will correct me.
when i had a netlist, i opened the lib file to check for IO modules in it and used that to write a wrapper. i.e. for each input/output ports of my netlist, i made it pass through a io module in my lib.
the lef contains the physical information of the iopads. so, when netlist is imported to the backend tool, along with the io specification file, the pads get created. |
Hi Sree,
can you specify it more clearly..
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sarath51
Joined: 11 Dec 2002
Posts: 143
Helped: 7
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| 05 Sep 2007 22:26 How to add IO during synthesis |
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| during synthesis only db are read actual IO are put during placement and foor planning
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deh_fuhrer
Joined: 25 Jul 2006
Posts: 422
Helped: 28
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| 06 Sep 2007 6:26 Re: How to add IO during synthesis |
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| sarath51 wrote: |
| during synthesis only db are read actual IO are put during placement and floor planning |
what do you mean by "only db are read".....
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