[SI-LIST] SSTL doubts

Hi all,
This is with reference to the JEDEC standard No. 8-9B of SSTL_2 interface.
On Table4, I could see terms like Vtt (WC)  and VTT(min) & VTT(max). 
For finding the maximum on resistance of driver, it uses Vtt(WC). 
I want to know, why we can't take VTT(min) as that may be realistic as 
Vtt is what connected as termination voltage.
It specifies, for o/p high drive,
Vtt (WC) = Vref(max) - 40mV. 
Vtt(min) = Vref(min) - 40mV.

The same is applicable for o/p low drive also.
Could anyone clarify this.

Regards,
Canes






 
____________________________________________________________________________________
Never miss an email again!
Yahoo! Toolbar alerts you the instant new Mail arrives.
http://tools.search.yahoo.com/toolbar/features/mail/
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http://www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field


List technical documents are available at:
                http://www.si-list.net

List archives are viewable at:     
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu

Other related posts: