S5PV210_HARDWARE DESING GUIDE REV 1.0
105
15. USB 2.0 HS OTG
15.1. Signal Descriptoin
Ball Name
I/O
Description
Comment
XUOTGDRVVUBS
O
USB OTG charge pump enable
XUOTGDP
IO
USB OTG Data pin DATA(+)
XUOTGREXT
IO
USB OTG External 44.2ohm (+/- 1%) resistor
connection
XUOTGDM
IO
USB OTG Data pin DATA(-)
XUOTGID
IO
USB OTG Mini-Receptacle Identifier
XUOTGVBUS
IO
USB OTG Mini-Receptacle Vbus
- Available volatage level :4.0V~6.0V
15.2. Power Domain
VDD_UOTG_A_AP is for USB OTG Phy analog power supplied with 3.3V, and VDD_UOTG_D_AP is for USB OTG
Phy digital power supplied with 1.1V.
Caution! VDD_UOTG_D_AP must be brought up first, followed by VDD_UOTG_A_AP, in order to limit power
consumption and prevent voltage stress on the device.
Circuit Diagram Example
To minimize power consumption in USB OTG block, SEC recommends that user should control powers for
VDD_UOTG_A_AP and VDD_UOTG_D_AP.
(1) use Charge Pump in order to supply VBUS to a bus-powered USB device.
To use Only Device mode but OTG mode.
(1) XusbID : leave as a no connect(Device mode)
(2) XusbDRVVBUS : leave as a no connect (The charge pump circuit should be removed)
(3) Refer to following circuit diagram about other signals.