A5 Power routing "minor issues" for some modules
andy at openmoko.com
Tue Feb 26 16:07:17 CET 2008
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Somebody in the thread at some point said:
>> - vibrator
> I think it's OK to connect to VB_SYS.
I was looking at the vibrator drive signals earlier and there is all
kinds of nasty inductive spikes on them, due in part to this NC snubber
diode I guess. This can make possibly make trouble.
>> - USB Host function (plug USB device into gta02)
> If we use USB supports the VB_SYS, we can't plug any USB device. Because
> we use the same USB port.
> Therefore, we don't need to change.
Lol can't argue with that one.
>> - whole GSM subsystem
> Like tony's suggestion, phone always uses the battery to support the power.
> Adaptor or USB is not good for supporting the GSM power.
Really even a 1A adapter, 5W, cannot be made to do better than the battery?
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