Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver
Datasheet
.
~
~
RVBUS
VBUS
VBUS
VBAT
To USB Con.
To OTG
VDD33
LDO
COUT
GND
SMSC PHY
~
~
Figure 5.6 Powering the USB3320 from a Battery
The USB3320 can be powered from an external 3.3V supply as shown below in Figure 5.7. When
using the external supply, both the VBAT and VDD33 pins are connected together. The bypass
capacitor, CBYP, is recommended when using the external supply.
~
~
RVBUS
VBUS
VBUS
VBAT
To USB Con.
To OTG
VDD33
LDO
Vdd
3.3V
CBYP
GND
SMSC PHY
~
~
Figure 5.7 Powering the USB3320 from a 3.3V Supply
Revision 1.0 (07-14-09)
SMSC USB3320
DATA3S0HEET