Datasheet

Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver
Datasheet
Revision 1.0 (07-14-09) 30 SMSC USB3320
DATASHEET
.
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, C
BYP
, is recommended when using the external supply.
Figure 5.6 Powering the USB3320 from a Battery
Figure 5.7 Powering the USB3320 from a 3.3V Supply
VBUS
VDD33
VBAT
GND
LDO
~
~
~
~
SMSC PHY
To OTG
C
OUT
VBUS
To USB Con.
R
VBUS
VBUS
VDD33
VBAT
GND
LDO
~
~
~
~
SMSC PHY
To OTG
C
BYP
Vdd
3.3V
VBUS
To USB Con.
R
VBUS