OLPC hardware: what if there was an SDR modem / chipset?

[Tiago Marques]

Thanks. The connector for the WLAN card did seem a mini-PCIe but I thought
you were going to stick with SDIO.

Best regards,
Tiago

On Mon, Mar 8, 2010 at 10:10 PM, John Watlington <wad at laptop.org> wrote:

>
> On Mar 7, 2010, at 10:24 PM, Tiago Marques wrote:
>
>  Hi Wad,
>>
>> Been reading some "lost" e-mails, sorry to be bumping this up.
>>
>> On Tue, Jan 26, 2010 at 10:35 PM, John Watlington <wad at laptop.org> wrote:
>>
>>  On Jan 27, 2010, at 12:17 AM, Luke Kenneth Casson Leighton wrote:
>>>
>>> > hi scott, thanks for joining in, here.
>>> >
>>> > On Tue, Jan 26, 2010 at 3:01 PM, C. Scott Ananian
>>> > <cscott at laptop.org> wrote:
>>> >> Good luck with your SDR dreams.  I think the most you can expect from
>>> >> OLPC is that, *if* the 10 improbable things you described actually
>>> >> come to pass, OLPC will someday include a miniPCI slot so that they
>>> >> can plug in your magic daughtercard.
>>> >
>>> >  miniPCI assumes there's a PCI bus.  ARM SoCs don't have PCI (that i
>>> > know of).  the only SoC x86 chip i've heard about is the 1ghz IEC
>>> > 100HV from RDC.  but with ARM it'd have to be a mini PCI-e slot with
>>> > the USB2 option - pins 36 and 34 - but that's been ruled out because
>>> > john's removed all internal USB paths.  the next gen x86 clone from
>>> > RDC that they're planning will have full PCI-e.
>>>
>>> Actually, I got that miniPCI connector into XO-1.5.   I won't go into
>>>
>>
>>
>> You did? I can't find any reference in the XO 1.5 diagrams.
>> Is it already being used for something?
>>
>
> Read the next paragraph I wrote:
>
>  But as with most networking cards, the miniPCI is just a form factor.
>>> Most WiFi/GSM cards on the market electrically use a USB connection.
>>> On XO-1.5, we use SDIO, but also provide a spare USB port to the miniPCI
>>> (why not ?)    The form factor is half-length miniPCI, and the pinout
>>> is documented at: http://wiki.laptop.org/images/0/05/
>>> XO_1.5_Pinouts_C2.pdf
>>>
>>
> CN19 in that document is the PCIe pinout.
>
> http://wiki.laptop.org/go/Image:XO_1.5_C1_Annotated_Motherboard.png
> shows the miniPCIe connector, with a WLAN card attached.
>
> Cheers,
> wad
>
>
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