Andrew,

I think this may be what you want,
or at least give you some leads.

Application Report
How to Operate bq20z7x/8x/9x Fuel Gauge and bq24707/25/26 Charger w/o
Host Cntroller
SLUA608 – PDF   153.2KB 2011-08-31 (6 pages)
http://www.ti.com/lit/an/slua608/slua608.pdf

Thanks,
Keith

==================================================
On Tue, Mar 6, 2012 at 11:56 PM, Andrew Greenberg <and...@psas.pdx.edu> wrote:
> Hi!
>
> If there is someone out there who actually understands how SMBus works
> in an real system, could you please email me? Or if you know someone who
> knows, could you have them email me?
>
> We're trying to hunt down these questions:
>
> - You have a smart battery and smart battery charger on the same SMBus.
> But something has to tell the smart battery charger to actually start
> charging? If so, who does this? Who asks the battery about its charge
> rate and capacity, checks that there's sufficient shore power, and then
> turns on battery charging? Is this the "embedded controller"?
>
> - Assuming it's the "embedded controller" that does this coordination,
> especially when the host is off, are there generic controllers out
> there? Or does everyone just throw a microcontroller at this?
>
> Thanks!
>
> Andrew
>
> --
> -------------------------------------------------------
> Andrew Greenberg
>
> Portland State Aerospace Society (http://psas.pdx.edu/)
> and...@psas.pdx.edu  C: 503.708.7711
> -------------------------------------------------------
>
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