Don McKenzie wrote:
>
> Josh Koffman wrote:
> >
> > Are these chips bus powered? Do they provide a means to power your
> > project from the bus too?
>
> re http://www.dontronics.com/giga.html
> Basically yes, and yes.
>
> I don't have the specs in front of me Josh, but looking at the general
> power info in Jan Axelson's "USB Compete Book" a device requiring 100 ma
> is fine, something that needs 500ma will depend on the PC power supply,
> ie: is it a notebook?, and if it is a hub, is it self powered?
>
> So, a sensible drain, such as the juice required by a low voltage PIC
> programmer or similar, would be fine.
>
> After all, the USB bus now powers cameras and many other devices.
> I know other will have a better idea than me on this.

The specs aren't completely clear, but they mention something about 60mA for
"user applications". Does that mean that my PIC et al can only use 60mA? That's
just barely enough for my USB-CAN adapter. I was hoping for a little more
breathing room. What happened to the 500mA limit?

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