Re: [IBIS-Users] pulse/step description for v/t curves

Thanks Mei.

NG,MEI-YEE wrote:

> Hi Sujit,
>
>  
>
> Again, from my limited experience, the [sim time] value chosen is 
> based on the amount of time your pad needs to reach the stable value 
> after transition. Basically, it should be longer than your rise or 
> fall time.
>
>  
>
> As for the pulse information, I simulated them based on the expected 
> td, tr, etc that I would expect from my pad's inputs/stimuli.
>
>  
>
> Hope it helps.
>
>  
>
> Best regards,
>
> Mei Yee
>
> SID, Avago Technologies (Malaysia)
>
> Tel no.:604-6108515
>
>  
>
>  
>
> ------------------------------------------------------------------------
>
> From: Sujit Kumar-r65837 [mailto:sujit@freescale.com]
> Sent: Thursday, December 21, 2006 5:48 PM
> To: Sujit Kumar-r65837
> Cc: NG,MEI-YEE; ibis-users@eda.org
> Subject: Re: [IBIS-Users] pulse/step description for v/t curves
>
>  
>
> hi IBIS users
> any suggestions on this?
> Its quite urgent for me.
>
> Sujit Kumar-r65837 wrote:
>
> hi Mei
> From the ibis document what I understand is;  there is only one switch 
> (i.e sim time) in .s2i file to describe
> the pulse. Then following queries arise:
>
>  -- on what basis should one choose this [sim time] value?
>        I need to know this because I have to generate ibis model for 
> an IO pad.
>      
>  -- How are the following values calculated to describe the pulse i.e
>       td, tr, tf, width and period.
>
> thanks
> sujit
>
> NG,MEI-YEE wrote:
>
> Hi Sujit,
>
>  
>
> From my limited experience with s2ibis3, I discovered that the pulse 
> size was generated by dividing your sweep range by 100 points. If you 
> need to make it finer, you might need to edit the .spi files manually, 
> but keep in mind that the number of points allowed for version 3.2 is 
> 100 only.
>
>  
>
> Thank you.
>
>  
>
> Best regards,
>
> Mei Yee
>
> SID, Avago Technologies (Malaysia)
>
> Tel no.:604-6108515
>
> ------------------------------------------------------------------------
>
> From: owner-ibis-users@server.eda.org 
> <mailto:owner-ibis-users@server.eda.org> 
> [mailto:owner-ibis-users@server.eda.org] On Behalf Of Sujit Kumar-r65837
> Sent: Thursday, December 21, 2006 1:23 PM
> To: Sujit Kumar-r65837
> Cc: ibis-users@server.eda.org <mailto:ibis-users@server.eda.org>
> Subject: [IBIS-Users] pulse/step description for v/t curves
>
>  
>
> hi IBIS users
> Can anyone help me for this?
>
> Sujit Kumar-r65837 wrote:
>
>
> How to specify the pulse/step  description in .s2i file for 
>  generating v/t curves?
> How do you reach upon those values?
>
>
> -- 
>
> thanks
> sujit kumar
>
>
>
>
> +91-120-4396069
> +91-09910168788
>
> <mailto:sujit@freescale.com>
>
>  
>
> -- 
>
> thanks
> sujit kumar
>
>
>
>
> +91-120-4396069
> +91-09910168788
>
> <mailto:sujit@freescale.com>
>
>  
>
>  
>
> -- 
>
> thanks
> sujit kumar
>
>
>
>
> +91-120-4396069
> +91-09910168788
>
> <mailto:sujit@freescale.com>
>
>  
>
>  
>
> -- 
>
> thanks
> sujit kumar
>
>
>
>
> +91-120-4396069
> +91-09910168788
>
> <mailto:sujit@freescale.com>
>
>  
>

-- 
thanks
sujit kumar




+91-120-4396069
+91-09910168788





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