A few links to look at

http://e2e.ti.com/support/low_power_.../t/140146.aspx
http://e2e.ti.com/support/low_power_...35/932756.aspx

In one of those, there is a link refferal to http://lists.meego.com/pipermail/mee...er/000674.html, which unfortunately is now dead. But, perhaps someone can get lucky and find some qoutes somewhere on what was discussed there.