[Arm-netbook] Multi-channel audio support

[lkcl luke]

On Sat, Dec 31, 2011 at 7:28 PM, lkcl luke <luke.leighton at gmail.com> wrote:

>> What the best way to get a pinout of the SOC and the reference schematic?
>
>  contact eva wu.  i have the pinouts already - if you're happy to sign
> an NDA with allwinnertech i can pass them on to you.

 ... of course, you could always find them on the internet :)

>  hmm, i should ask them for the schematics, shouldn't i.

 done.  let's see what the response is.

 in the mean-time, what do you actually need?  the IC's an FPBGA441
package.  would a list, in text, of the pinouts and the functions be
of any use?  if so what format (space-separated fields, unix-formatted
LF ok?)

 the PMIC is an AXP209
http://www.x-powers.com/download/AXP209%20Datasheet%20v1.0_cn.pdf
sorry that's chinese :)  it's an awesome little chip - makes the
decision whether to use 4.2v battery, 5v USB-OTG or 5v PSU power;
outputs a ton of voltages including 5v, 1.2, 1.25, 1.3 etc.

 the Ethernet PHY is an RTL8201CP
http://approsoftware.com/download/rtl8186/doc/spec-8201cp(121).pdf
that's in engleeesh this time.

 also on the EVB schematic a SY8021L is mentioned and also a LDO AP1231

 the SY is a company called silicon energy, SY8021L is a dual
step-down regulator, i couldn't immediately find a datasheet, package
is SO8E

 the AP1231 iis here: http://www.chipown.com.cn/pro/AP1231.pdf and
it's a SOT-25 (SOT-23-5L)

 err... that's about it!  other than oh wait arse the power tree
diagram has a SY7208 DCDC converter going through 3 routes, one of
which is to the USB-OTG (5v at 2A) which then feeds back (5v at 900mA) to
the AXP209 as its 5v power source.  which then feeds out 5v at 2A to the
_same_ SY7208 DCDC converter :)

 hey it's a good job this isn't a perpetual motion machine being designed, here.

 also just for completeness: 12v at 2A DC input goes through an MP1482
DCDC converter down to 5v at 2A.

l.