[Arm-netbook] IC for analog and digital buttons (EOMA-68)

krasi gichev krasimirr at gmail.com
Sun Aug 10 08:56:14 BST 2014

> nope.  that rules out the IC1T and the jz4775 CPU cards.  not gonna
It is always to balance between requirements. If this CPU card forces
Miguel to add $4 IC, that what's the benefit of $2 SoC? In fact probably
his product will be useless with IC1T? If I was him, I would say that such
cards are not supported in his product and put an end to this. Instead of
searching for expensive hubs and changing the base board to support this -
just to be able to conform to all options and support card that just can't
be used there because of other limitations.
Is it so that any EOMA based product (like his console) should run with any
EOMA card (I mean to be able to run with minimum supported feature set of
the standard)? Is it allowed to have a product that requires some of
optional features to be present?
If this is out of the scope of the discussion, just ignore it. Personally I
have some other problems with EOMA idea so I had to switch my design to
other form factor - so I don't "deserve" answer. Just trying to be helpful.

2014-08-09 21:43 GMT+03:00 Luke Kenneth Casson Leighton <lkcl at lkcl.net>:

> On Sat, Aug 9, 2014 at 7:34 PM, Miguel Garcia <gacuest at gmail.com> wrote:
> > 2014-08-09 16:09 GMT+02:00 Luke Kenneth Casson Leighton <lkcl at lkcl.net>:
> >>  don't worry about it.  really.
> >
> > 1st USB ---> USB5434B-JZX --> USB Host 3.0
> >                                            --> USB WIFI
> >                                            --> USB BT
> >                                            --> USB Audio
> >
> > 2nd USB ---> STM32F072
> >
> > What about this?
> >
> > The USB5434B-JZX seems to supports 3.0, 2.0 and 1.1.
>  have you also added in a PMIC for supporting the USB3 current
> requirements?
> > USB5434B-JZX datasheet:
> http://www.mouser.com/catalog/specsheets/USB5434.pdf
> >
> > USB5434B-JZX mouser:
> >
> www.mouser.com/ProductDetail/Microchip-Technology/USB5434B-JZX/?Microchip-Technology/USB5434B-JZX/&qs=sGAEpiMZZMtv%252bwxsgy/hiFSa2hlhMdZw/zniVqeXLCU=
>  $4 from a US-based company is a hell of a lot more than $1 for an
> extremely popular FE1.1.
>  honestly the extra power requirements and the cost i would say are
> simply not worth the hassle.
> l.
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