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jayakumarjay
Joined: 18 Jun 2004
Posts: 23
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 18 Jun 2004 13:55 scl05u.syn |
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cell libraries
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the_penetrator
Joined: 22 Jun 2001
Posts: 327
Helped: 3
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18 Jun 2004 15:58 leonardo spectrum starndard cell library |
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dear friend...
... nobody wants to spend points for no reason
Please provide some description on the stuff you offer (Vendor, process technology, etc)
thanks
the_penetrator©
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skymusic
Joined: 29 Jun 2004
Posts: 57
Helped: 2
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30 Jun 2004 8:38 cost of a standard cell library |
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| Which foundry and process is this libray designed for?
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debussy1765
Joined: 16 Oct 2003
Posts: 21
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02 Jul 2004 8:43 scl05u |
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i think youshould list the funfry name , else noone
know if the library if exist
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rogger123
Joined: 09 Apr 2003
Posts: 114
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15 Jul 2004 17:13 leonardo spectrum standard cell library |
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| can i use these std cell libraries directly in leonardo spectrum or synplify????
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the_penetrator
Joined: 22 Jun 2001
Posts: 327
Helped: 3
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16 Jul 2004 0:07 exemplar logic xlibcreator |
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they have to be in *.SYN format. If not then if you have Synopsys libraries (lib) you have to convert those with some tool like Xlibcreator.
Beware my friend, xlibcreator does well with standard-cell but if you need memory macros as well, you'll have to do some work in addition.
the_penetrator©
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galant
Joined: 19 Jun 2003
Posts: 58
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21 Jul 2004 12:48 cell library for leonardo |
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| Is this library for synopsys?If yes, we can convert them into cadence library.
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rogger123
Joined: 09 Apr 2003
Posts: 114
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22 Jul 2004 2:19 Re: Standard Cell Libraries |
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i did convert these libraries into .SYN format using xlibcreator.. i followed the entire procedure mentioned in thier docs..
the problem i am facing is with flip flops...
it cannot find flips in the std cell library...
what should i do
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rogger123
Joined: 09 Apr 2003
Posts: 114
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22 Jul 2004 2:39 Re: Standard Cell Libraries |
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i tried this out but leonardo spectrum never uses flip flops from this library... could this be coz there is no *.SYM along with this std cell library package???
can u post the symbols library *.SYM?? for leonardo spectrum
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Google
AdSense
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22 Jul 2004 2:39 Ads |
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rogger123
Joined: 09 Apr 2003
Posts: 114
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22 Jul 2004 2:50 Re: Standard Cell Libraries |
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hi below is the report that leonardo gives me when i try to synthesise a simple vhdl code that infers 4 ffs
ERROR: no D-FlipFlop in library ; instance ix35 cannot be mapped
ERROR: no D-FlipFlop in library ; instance ix41 cannot be mapped
ERROR: no D-FlipFlop in library ; instance ix47 cannot be mapped
ERROR: no D-FlipFlop in library ; instance ix56 cannot be mapped
-- Matching combinational logic..
-- Matching non-combinational logic..
WARNING: instance ix56 (noncomb) is not matched. Primitive will remain
WARNING: instance ix47 (noncomb) is not matched. Primitive will remain
WARNING: instance ix41 (noncomb) is not matched. Primitive will remain
WARNING: instance ix35 (noncomb) is not matched. Primitive will remain
-- Covering..
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the_penetrator
Joined: 22 Jun 2001
Posts: 327
Helped: 3
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23 Jul 2004 1:01 Re: Standard Cell Libraries |
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there is a certain procedure...
take a look at scl05u.vhd. It is fed to the module generator, and contains area/delay estimates for the lib. The actual values Leo would emit wiil be obtained from the SYN files and not this one. This is only for the module generator to take some decisions.
Generally, you need 2 files. The corresponding vhd file, e.g. gagalib.vhd and the synthesis library which is gagalib.syn. Not sym, which i donnot think it is crucial if exists.
So take example from scl05u.vhd, scl05u.syn. Then, modify devices.ini as proper.
Good luck
thank_you_the_penetrator©
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rogger123
Joined: 09 Apr 2003
Posts: 114
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23 Jul 2004 1:57 Re: Standard Cell Libraries |
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hi
i followed the exact procedure outlined in the xlib documentation.
i generated the vsc*.vhd and vsc*.syn files. but while generating the cost report which obtains the area and delay it did it for all the gates but not for the components after the gates (latgq, dffcq etc...) so the new area and delay information applies only for the gates and not the latches nd flops... would this be the cause???
would u want me to attach the .vhd and .syn file???
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the_penetrator
Joined: 22 Jun 2001
Posts: 327
Helped: 3
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23 Jul 2004 12:22 Re: Standard Cell Libraries |
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maybe
what you should generate is a 1-on-1 replacement for the area/delay records as e.g. in scl05u.vhd.
If something went wrong with that, this might be the reason.
Anyway it is doable, and i have done it 3 or 4 times.
the_penetrator©
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rogger123
Joined: 09 Apr 2003
Posts: 114
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23 Jul 2004 14:13 Re: Standard Cell Libraries |
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| would it be possible for u to post the .syn and .vhd files??
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rogger123
Joined: 09 Apr 2003
Posts: 114
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24 Jul 2004 16:04 Re: Standard Cell Libraries |
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| could you please post the .vhd and .syn file as i am not able to work my way around it
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the_penetrator
Joined: 22 Jun 2001
Posts: 327
Helped: 3
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25 Jul 2004 0:23 Re: Standard Cell Libraries |
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i can see you are in a hurry...
wait me so i can get a high bandwidth connection.
tomorrow that is. anyway you can use scl05u.vhd, scl05u.syn, they come with leonardo. you are an experienced RTL boy, or just a student?
you should use any leonardo from 2000.1d at least.
don't be pushy. i don't like that. i have some other libs too, but if my boss finds out, he will be playing soccer with my head...
along with my colleagues... after they cut it OFF MY NECK FIRST!!!
the_penetrator_in_extremis©
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rogger123
Joined: 09 Apr 2003
Posts: 114
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25 Jul 2004 3:28 Re: Standard Cell Libraries |
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hi
abs no problem..
well i do have scl05...
don't wory abt ur neck 
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rogger123
Joined: 09 Apr 2003
Posts: 114
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03 Aug 2004 13:26 Re: Standard Cell Libraries |
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Hi,
I have a doubt abt the way the synthesis tool works with asic libraries...
if there are only gates in the libraries how does he tool implement the flip-flops, or other sequential blocks.
In the .vhd files only the behavioral models are described...
does the synthesis tool use these basic gates to implement the flops(should not be the case)... how does the synthesis tool map flops??
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the_penetrator
Joined: 22 Jun 2001
Posts: 327
Helped: 3
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03 Aug 2004 13:35 Re: Standard Cell Libraries |
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the standard-cell has flip-flops, and the synthesis tool is able to infer them.
what you don;t have is RAM blocks 'cause these are implemented using a RAM generator. It is not easy to plug in RAM macro to Leonardo since the tool is crap!
What i want to say is that Xlibcreator cannot handle vector inputs/outputs. All RAM macros need modifications prior to pluging them into Leonardo.
But you shouldn't have problem in building e.g. register files with FFs.
cheers 
the_penetrator©
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xuanzhu
Joined: 14 Dec 2002
Posts: 65
Helped: 4
Location: shanghai
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08 Aug 2004 6:16 Standard Cell Libraries |
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| is this library similar as the tsmc library? I want to know its version to decide whether it can be used in synthesis 2000.5
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wang.mickey
Joined: 29 Aug 2004
Posts: 9
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04 Sep 2004 9:23 Re: Standard Cell Libraries |
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youshould list the funfry name , else noone
know if the library if exist
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GRAY
Joined: 26 May 2003
Posts: 5
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24 Sep 2004 16:11 Re: Standard Cell Libraries |
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| does it really work?but I
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negreponte
Joined: 26 Sep 2004
Posts: 95
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26 Sep 2004 13:44 Re: Standard Cell Libraries |
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Does anyone know what ASIC technology (μm) the SCL05 supports?
thanks
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neiman
Joined: 29 Sep 2004
Posts: 2
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29 Sep 2004 5:33 Re: Standard Cell Libraries |
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Cadence supplies 180nm and 90nm std cell library for educational purposes at http://crete.cadence.com the library can not be manufactured. You can laos find desing examples and courseware at
this site.
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negreponte
Joined: 26 Sep 2004
Posts: 95
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29 Sep 2004 18:23 Standard Cell Libraries |
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Does anyone knows if there are free and modern cell libraries for the Leonardo synthesis tools. Is it
possible to find libraries that they can co operate
with leonardo?
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negreponte
Joined: 26 Sep 2004
Posts: 95
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08 Oct 2004 21:08 Standard Cell Libraries |
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| Finally, for which synthesis program are these libraries???
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geconom
Joined: 12 Feb 2002
Posts: 309
Helped: 3
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10 Oct 2004 4:48 Re: Standard Cell Libraries |
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| Negreponte, I have some old libraries for Leonardo downloaded from Exemplar Logic, the company that first released the tool. Are you interested in a specific technology or a specific back-end tool?
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HCM_bucat
Joined: 29 Sep 2004
Posts: 81
Helped: 3
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12 Oct 2004 1:57 Re: Standard Cell Libraries |
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We are looking for Standard Cell Libraries too. What foundry does this Library for and what tools can use this Library.
Thanx
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negreponte
Joined: 26 Sep 2004
Posts: 95
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13 Oct 2004 11:53 Standard Cell Libraries |
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genocom, what ASIC technology these libraries support?
I am interesting in libraries that I could use with
Leonardo
thank you
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the_penetrator
Joined: 22 Jun 2001
Posts: 327
Helped: 3
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13 Oct 2004 15:30 Re: Standard Cell Libraries |
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SCL05 is 0.5um standard cell. It comes with most Leonardo distributions.
the_penetrator©
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