[SI-LIST] Re: Ground, the preferred reference plane
- From: Vinu Arumugham <vinu@xxxxxxxxx>
- To: chris.cheng@xxxxxxxxxxxx
- Date: Wed, 11 Dec 2002 23:54:51 -0800
Chris Cheng wrote:
>Take an example of DDR in most PC design. The vref on receivers is basically
>the VTT which usually is generated from an external DC/DC converter that
>generates VDDQ/2 and is completely isolated from the driver VDDQ.
>
That does not sound like a good thing...
The receiver Vref should be driver Vddq/2. We usually generate it with a
resistor divider from driver Vddq.
This way, Vref will track Vddq better...
Thanks,
Vinu
------------------------------------------------------------------
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:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List archives are viewable at:
//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:
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane
- » [SI-LIST] Re: Ground, the preferred reference plane