Test points - a possible future direction

Andy Green andy at openmoko.com
Thu Jul 24 13:15:12 CEST 2008


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Somebody in the thread at some point said:
| On 7/24/08, Thomas Seiler <thseiler at gmail.com> wrote:
|>  You would just need a 2x3 block or so:
|>  VBAT  VIO_3v3  (power these cannot pe but on FPC)
|>  GND   GND
|>  I2C     I2C         (these are nice because a single connector for
|>  most basic mods is sufficient)
|
| mindreader!
| Though I think VBAT is a bad idea. and
| The 3.3V supply should be switchable from the host.

I think this whole testpoint and connector thing is definitively the
wrong direction.

The USB host socket

~ - doesn't need you to open the case of Freerunner
~ - provides 2.5W power for the external device
~ - gives ~1MByte/sec bandwidth in one direction or the other
~ - has many standard classes supported in kernel
~ - does not need delicate cables
~ - allows Y cable so incoming power and charge is possible too

- -Andy
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