[SI-LIST] Re: Eye diagram measurement
- From: "Jim Antonellis" <janton@xxxxxxxxxxxxx>
- To: <scott@xxxxxxxxxxxxx>
- Date: Wed, 6 Apr 2005 11:31:25 -0400
Hi Scott,
Thanks for the reply. I appologize, I forgot that approach,
and as you astutely point out, it is very costly (perf) in
SPICE which is why I ran it external.
Thanks for your time,
jim
-
Jim Antonellis janton@xxxxxxxxxxxxx
Sandburst Corp www.sandburst.com
Office: 978.689.1669
Cell: 978.618.4745
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-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Scott McMorrow
Sent: Wednesday, April 06, 2005 11:22 AM
To: Jim Antonellis
Cc: edpc108@xxxxxxxxx; si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Eye diagram measurement
The trick is one set of measure statements to cover each bit cell, which
results in 100's, 1000's or 10000's of measure statements for an entire
simulated data stream. It can be done and implemented with a script
that parses the excitation pattern, and then processes all of the
measurement results. It is not pretty. It is an exceedingly slow post
processing operation in HSPICE, when the time resolution is down in the
1ps range. Which is why other external waveform processing, as is done
in the SiSoft tools, is more desireable.
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
Jim Antonellis wrote:
>Hi Scott, Jaaprakash,
>
>I looked into this a while back, and I thought using the HSPICE
>.MEASURE construct you did not have the ability to make multiple
>bit cell measurements. Could you please share the .MEASURE syntax
>that would make this possible as I had to resort to a post-proc
>spreadsheet last time I did it.... and would greatfully appreciate
>the "trick".
>
>Thx,
>Jim
>
>
>-
>Jim Antonellis janton@xxxxxxxxxxxxx
>Sandburst Corp www.sandburst.com
>Office: 978.689.1669
>Cell: 978.618.4745
>
>This message and any attachments are Confidential and may be Legally
>Privileged. It is intended solely for the addressee. If you are not
>the intended recipient, please delete this message from your system
>and notify us immediately. Any dis-closure, copying, distribution or
>action taken or omitted to be taken by an unintended recipient in
>reliance on this message is prohibited and may be unlawful.
>
>
>
>-----Original Message-----
>From: si-list-bounce@xxxxxxxxxxxxx
>[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Scott McMorrow
>Sent: Wednesday, April 06, 2005 11:12 AM
>To: edpc108@xxxxxxxxx
>Cc: si-list@xxxxxxxxxxxxx
>Subject: [SI-LIST] Re: Eye diagram measurement
>
>
>Jaaprakash,
>
>Yes. It can be done with .measure statements, or it can be done with
>SiSoft's SiAuditor measurement capability.
>
>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
>
>
>
>Jayaprakash wrote:
>
>
>
>>Hi ,
>>
>> Is it possible to measure eye diagram height and
>>width (not graphically) in HSPICE simulations?
>>
>> Thanks,
>>
>>Best regards,
>> Jayaprakash.
>>
>>
>>
>>Send instant messages to your online friends http://uk.messenger.yahoo.com
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