Comments (3)
Diode steering is not done because it would interfere with USB OTG port in the
OTG
mode, where it supplies the 100mA 5V. The decision has been made to keep the
design
as is in order to support all true OTG modes. This is the reason not to use the
DC
supply and the USB interface at the same time.
-When the DC jack is plugged in, there is no connection between the VBUS and
the
DC_5V rail. The FET is open. Therefore there is no path for the VBUS to drain
back
into the DC or the DC to drain back into the VBUS when in the DC powered mode.
It is
isolated.
-There is decoupling on SW_IN on the REV B board.
Original comment by [email protected]
on 9 Jul 2008 at 7:36
from beagleboard.
-Diode steering is not done because it would interfere with USB OTG port in the
OTG
mode, where it supplies the 100mA 5V. The decision has been made to keep the
design
as is in order to support all OTG modes.
-When the DC jack is plugged in, there is no connection between the VBUS and the
DC_5V rail. The FET is open. Therefore there is no path for the VBUS to drain
back
into the DC or the DC to drain back into the VBUS when in the DC powered mode.
It is
isolated.
-There is decoupling on SW_IN on the REV B board.
Original comment by [email protected]
on 10 Jul 2008 at 12:57
from beagleboard.
Only the changes already made to Rev B will be applied.
Original comment by [email protected]
on 10 Jul 2008 at 12:58
- Changed state: WontFix
from beagleboard.
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from beagleboard.