USB3503 Datasheet, PDF (28/73 Pages) SMSC Corporation – USB 2.0 HSIC High-Speed Hub Controller Optimized for Portable Applications

USB3503
5.3.26 REGISTER D0: DOWNSTREAM BATTERY CHARGING ENABLE - BC_EN
Default = 0x00h
Bit Number
7:0
Bit Name
BC_EN
Description
Battery Charging Enable: Enables the battery charging feature for the
corresponding downstream port.
‘0’ = Downstream Battery Charging support is not enabled.
‘1’ = Downstream Battery charging support is enabled
Bit 7= Reserved
Bit 6= Reserved
Bit 5= Reserved
Bit 4= Reserved
Bit 3= Port 3 Battery Charging Enable.
Bit 2= Port 2 Battery Charging Enable.
Bit 1= Port 1 Battery Charging Enable.
Bit 0= Reserved
5.3.27 REGISTER E5H: PORT POWER STATUS - PRTPWR
Default = 0x00h
Bit Number
7:4
3:1
Bit Name
Reserved
PRTPWR[3:1]
Description
Reserved.
Read Only.
Optional status to SOC indicating that power to the downstream port was
enabled by the USB Host for the specified port. Not required for an embedded
application.
This is a read-only status bit. Actual control over port power is implemented by
the USB Host, OCS register and Downstream Battery Charging logic if enabled.
See Section 8.1.2, "Special Behavior of PRTPWR Register," on page 48 for
more information.
0 = USB Host has not enabled port to be powered or in downstream battery
charging and corresponding OCS bit has been set.
1 = USB Host has enabled port to be powered
0
Reserved Reserved.
DS00001584B-page 28
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