Hi-Speed USB Transceiver with 1.8V-3.3V ULPI Interface - 13MHz Reference Clock
Application Diagram
1.8V
Reference Clock
Supply
RESETB
ULPI Interface
12
3.1-5.5V
Battery /
Supply
VDDIO
1.8-3.3V
ID
1
NXT
18
17
16
15
14
13
Note:
IO Supply
VBUS
2
VDDIO
DATA0
DATA1
DATA2
DATA3
VDDIO can
be connected
to the 1.8V
supply for
1.8V IO
VBAT
24Pin
QFN
4 x 4 mm
3
VDD3.3
4
USB
Connector
DM
5
DP
6
CVBUS
5 Volt
Supply
Host/OTG Only
CVBUS
Min
120uF
1uF
Max
REFCLK and CLKOUT should be
isolated with a ground line on both
sides.
Host
QFN
Ground Flag
Device
OTG Device
10uF
1uF
6.5uF
Figure 3 USB3318 QFN Application Diagram
SMSC USB3318
7
Revision 1.3 (11-02-07)
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