[SI-LIST] Re: Estimate ISI with S parameters?
- From: Scott McMorrow <scott@xxxxxxxxxxxxx>
- To: John@xxxxxxxxxxxx
- Date: Mon, 16 May 2005 09:20:58 -0400
John
If you have HSPICE available, you can set up a circuit with s-parameter
modeling to measure any pattern dependent ISI that you want.
scott
Scott McMorrow
Teraspeed Consulting Group LLC
121 North River Drive
Narragansett, RI 02882
(401) 284-1827 Business
(401) 284-1840 Fax
http://www.teraspeed.com
Teraspeed? is the registered service mark of
Teraspeed Consulting Group LLC
John Lin (ªL´Â·×) wrote:
>Hi Steve,
>
>Thanks for your helps.
>
>>From other response, it looks like, I need to transfer channel's S =
>parameters into time domain
> and do pulse repsonse to see how the curve at the falling edge =
>penetrates to the period=20
>Of a next signal.
>
>In your mail, ISI is relative to attenuation,SDD21.
>
>I read SAS/SATA spec. There is a ISI compliant curve shown on a SDD21 =
>chart.=20
>The ISI curve is steeper than SDD21 compliant curve.=20
>
>How to generate a ISI curve at the frequency domain by simulation to =
>check if meet the requirement.?
>
>Thanks,
>John
>
>
>
>
>-----Original Message-----
>From: steve weir [mailto:weirsi@xxxxxxxxxx]=20
>Sent: Saturday, May 14, 2005 1:34 AM
>To: John Lin (=AAL=B4=C2=B7=D7); si-list@xxxxxxxxxxxxx
>Cc: John Lin (=AAL=B4=C2=B7=D7)
>Subject: Re: [SI-LIST] Estimate ISI with S parameters?
>
>John variable attenuation versus frequency within the symbol frequency =
>band will give rise to ISI as the amplitude at any given point will =
>depend on the previous history of symbols, and hence the name ISI.
>
>Steve
>At 10:25 AM 5/13/2005 +0800, =3D?big5?B?Sm9obiBMaW4gKKpMtMK31yk=3D?=3D =
>wrote:
>
>
>>Dear all SI experts,
>>
>>Can some ones explain how to relate ISI (inter-symbol interference) to=20
>>S parameters?
>>
>>What can be observed from S -parameter for differential 4 parts=20
>>simulation? For example, crosstalk, attenuation, reflection,....etc.
>>
>>Thanks,
>>John
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