A5 Power routing "minor issues" for some modules

[Andy Green]

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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?

- -Andy
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