Bus powered means device that only use Vbus of USB for it's power supply. I want to use micro USB as my board power supply. The is designed to take 600mA by 3.3v regulator. But I just don't know how to behave to it's pins? I have found somewhere that, it's data pins must shorted or connected together through 0-200 ohm resistor.
What and why must be exactly it's resistor?
How must be behaved to it's "shield" and "ID" pins? GND must be simply gnd isn't that?
how it will behave to charger and PCs?
I've found some nice theory about chargers beacon, for telling to hosts: I have XmA (X is variable) current available. Then they adapt themselves to accept that power. It means host will detect chargers available power.
But I want my board to beacon to the host like this: Hey host I want lot's of power please give me 1.5A (dedicated charge port) if possible.
(1)Ability to take required current from every supply including PCs without digital enumeration through MCU. (And is there any wiring config to get ride of enumeration?) (2)Nice noise, EMI, EMC performance
I've also asked my question in other form here.