Re; power measurement

> From: "Maria Cruz" <[email protected]>

> In the article
> Dynamic Power Management
> for Embedded Systems
> IBM and MontaVista Software
> Version 1.1, November 19, 2002

> were power measurements taken of the Linux prototype system running o=
n
IBM=AE
> PowerPC? 405LP?

Yes.  Please see the recently published article: Nowka et. al, "A 32-bi=
t
PowerPC System-on-a-Chip with support for Dynamic Voltage Scaling and
Dynamic Frequency Scaling", IEEE Journal of Solid-State Circuits, Volum=
e
37, Number 11, November 2001, pp. 1441-1447.

In this article we report CPU core power ranging from 100 mW (< 100 MHz=
) to
600 mW (> 300 Mhz) during MPEG4 video playback, and static standby powe=
r
down to < 500 uW (clock and PLL stopped).  These results did not utiliz=
e
the DPM system we are developing with Monta Vista.  We hope that as the=

Spring and Summer progresses we will be able to publish several article=
s
with more results, including results on the effectiveness of DPM in
handheld systems.

=




-------------------------------------------------------
This SF.NET email is sponsored by: Take your first step towards giving 
your online business a competitive advantage. Test-drive a Thawte SSL 
certificate - our easy online guide will show you how. Click here to get 
started: http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0027en