[Arm-netbook] MK802 mini pc case removed
mr.hipboi at gmail.com
Wed May 30 03:16:34 BST 2012
On Wed, May 30, 2012 at 3:30 AM, Henrik Nordström <
henrik at henriknordstrom.net> wrote:
> tis 2012-05-29 klockan 22:09 +0300 skrev Tsvetan Usunov - OLIMEX Ltd:
> > SY8008 is low cost step down DCDC
> > what is interesting here is that they do not use AXP209 which means
> > that they either abuse A10 specs, either the power sequencing is not
> > so critical for A10
> I would not think the power sequencing is that critical as long as RESET
> is held at least until power is stable + 300us.
> > seeing that they spare the expensive TVS (one TVS cost as much as
> > SY8008 and there are 3 for the HDMI protection) looks like this
> > vendor loves to gamble and do not care too much for the long term
> > reliability of this product
> Yes, not having protection on HDMI is gambling for sure.
> Aha, their engineer told me that they have the video jitter problem that
they can not
solve. Maybe it's related with this.
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Keep simple, stay foolish.
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