[IBIS-Users] RE: [IBIS] Warning in LVDS Clamp data

Hi Cary,

Thanks for the inputs. Indeed the cell has on - die termination. I will 
come back to you if i have any questions.

Thanks!

Best Regards,

Sudarshan HN
NXP Semiconductors/CTO /PLT
C-4, Manyata Tech Park, Nagawara
Bangalore-560 045 , India. 
Ph:+91-80-40267073 
Fax: +91-80-4026 7855
seri:sudarsha@inpsblr
E-mail: sudarshan.honnudike@nxp.com








"Mandel, Cary" <cary_mandel@mentor.com> 
Sent by:
owner-ibis@server.eda.org
2007-03-14 05:05 PM

To
"Sudarshan Honnudike" <sudarshan.honnudike@nxp.com>
<ibis@server.eda.org>
<ibis-users@server.eda.org>
cc

Subject
RE: [IBIS] Warning in LVDS Clamp data
Classification







Hello Sudarshan,
 
The 3rd warning means that, a clamp is allowing as much as 1/3 amp of 
current to flow, while the voltage is still within the voltage rails. This 
is probably not what you intended, unless, you are incorporating the 
electrical charactersitics of an on-die-terminator into the clamps.
 
If you would like to discuss this further, I suggest you contact Mentor 
directly - you can email me if you like.
 
Cary Mandel
Mentor Graphics
 

From: owner-ibis@server.eda.org [mailto:owner-ibis@server.eda.org] On 
Behalf Of Sudarshan Honnudike
Sent: 14 March 2007 11:11
To: ibis@server.eda.org; ibis-users@server.eda.org
Subject: [IBIS] Warning in LVDS Clamp data


Hi IBIS Experts, 

One of my customer is getting the following warning in ICX parser. 

;;    ;;   Warning: Current (0.306459) of summed typical power and ground 
clamp curves exceed 0.005 amps in the range between power and ground.
;;    ;;   Warning: Current (0.274468) of summed minimum power and ground 
clamp curves exceed 0.005 amps in the range between power and ground.
;;    ;;   Warning: Current (0.336667) of summed maximum power and ground 
clamp curves exceed 0.005 amps in the range between power and ground.

While running ibischk4 I didnt get this warning. These warnings i am 
getting for LVDS input cell. 

Please also let me know what this warning means. 


Best Regards,

Sudarshan HN
NXP Semiconductors/CTO /PLT
C-4, Manyata Tech Park, Nagawara
Bangalore-560 045 , India. 
Ph:+91-80-40267073 
Fax: +91-80-4026 7855
seri:sudarsha@inpsblr
E-mail: sudarshan.honnudike@nxp.com
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