[Arm-netbook] Release of SoM board KiCAD files with 2x100 pin ARM as a stepping stone

[Alejandro Mery]

On 10 December 2012 21:46, jm <joem at martindale-electric.co.uk> wrote:
> On Mon, 2012-12-10 at 18:37 +0000, luke.leighton wrote:
>> On Mon, Dec 10, 2012 at 4:52 PM, jm <joem at martindale-electric.co.uk> wrote:
>>
>> > Ideas still in the boil - but these are the ideals:
>> >
>> > The SoM board will have the power manager chip (and separate connector
>> > for power directly into the SoM board), SDRAM, flash, uSD, RTC,
>> > a micro USB or RS232 (not sure which)
>>
>>  RS232.  people always want to be able to debug, but they might want
>> to use the USB-OTG.
>
> Experience sez put in an optically isolated RS232.
> When a board just comes out of manufacturing or is retrieved for repair,
> there is no telling what is wrong with it. The last thing you want to
> do is connect it to your precious computer and blow it up.
> Optical isolator will ensure nothing like that happens.
> Need to use RS232 for that.

not rs232, the native ttl uart0 of the SoC

> Still - not sure which is best - may be have both?

I believe it's wrong to put the OTG connector in the SoM itself, it
will limit the capabilities of the device where you plan to connect
this module