Test points - a possible future direction
Andy Green
andy at openmoko.com
Thu Jul 24 13:15:12 CEST 2008
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
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
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org
iEYEARECAAYFAkiIZEAACgkQOjLpvpq7dMr7kQCeIe4Z8ev+g0fUPh2RSn+b7zIR
USwAn029Gld79TfZxHKUiJ7M74Q0lQXm
=U98T
-----END PGP SIGNATURE-----
More information about the hardware
mailing list