[SI-LIST] Re: HSPICE Eye Diagram
- From: Tracy Barclay <Tracy.Barclay@xxxxxxxxxxxx>
- To: Tanveer Alam <talam@xxxxxxxxxxxx>
- Date: Thu, 9 Jun 2011 15:26:43 -0700
Hi Alam,
I cannot view your graphic but my guess is that you are seeing retrace lines
through the eye. You will want to right-click in the plot window and select
"Monotonic Plot" to get rid of the retrace lines. You may need to adjust the
Eyedelay parameter to center the eye diagram so it is properly centered with
the signal crossings at each end.
------------------------------------------------
Tracy Barclay
CAE
Synopsys, Inc.
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Tanveer Alam
Sent: Thursday, June 09, 2011 11:49
To: 'si-list@xxxxxxxxxxxxx'
Subject: [SI-LIST] HSPICE Eye Diagram
Hi All,
I had a question regarding eye diagram in Awanwaves. I am not able to get a
clean eye by using the following code
************Eye Diagram for Awaves************************************
.param per = '480e-12' $desired eye diagram period
.param tsi = '4.8n' $desired eye diagram start time.
.probe tran
+eyetime1 +par
('.5*(sgn(TIME-tsi)+abs(sgn(TIME-tsi)))*(TIME-tsi-per*int((TIME-tsi)/per))')
* Bit time and rise/fall time
.param period = '1/6.25g'
.param trf = 50p
[cid:image001.jpg@01CC269B.4CD81E00]
Please suggest me how to get a clean eye.
Thanks in advance,
Tanveer
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