S5PV210_HARDWARE DESING GUIDE REV 1.0
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14. USB Host
14.1. Singnal Description
Ball Name
I/O
Description
XUHOSTPWREN
O
USB HOST charge pump enable
XUHOSTOVERCUR
I
USB HOST over current flag
XUHOSTDP
IO
USB HOST Data pin DATA(+)
XUHOSTREXT
IO
USB HOST External 44.2ohm (+/- 1%) pull-down
XUHOSTDM
IO
USB HOST Data pin DATA(-)
14.2. Power Domain
VDD_UHOST_A is for USB Host Phy analog power supplied with 3.3V, and VDD_UHOST_D is for USB Host Phy
digital power supplied with 1.1V.
Caution! VDD_UHOST_D must be brought up first, followed by VDD_UHOST_A, in order to limit power
consumption and prevent voltage stress on the device.
14.3. Circuit Diagram Example
To minimize power consumption in USB Host block, SEC recommends that user should control powers for
VDD_UHOST_A and VDD_UHOST_D.
(1) use Charge Pump Circuit or connect B’d 5V power to VBUS in order to supply VBUS to a bus-powered
USB device.
(2) connect regulator’s nOC in to XuhOVERCUR in order to detect over-current condition.
Содержание S5PV210
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Страница 127: ...S5PV210_HARDWARE DESING GUIDE REV 1 0 127 Connection Example Figure 24 1 IIS Connection Example with WM8580 Master Mode ...