USB3300 Datasheet, PDF (6/11 Pages) SMSC Corporation – HI SPEED USB HOST OR DEVICE PHY WITH ULPI LOW PIN INTERFACE

Hi-Speed USB Host or Device PHY with ULPI Low Pin Interface
Pin Configuration and Pin Definitions
The USB3300 is offered in a 32 pin QFN package (5 x 5 x 0.9mm). The pin definitions and locations
are documented below.
USB3300 Pin Locations
GND 1
GND 2
CPEN 3
VBUS 4
ID 5
VDD3.3 6
DP 7
DM 8
USB3300
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ULPI PHY
32 Pin QFN
GND FLAG
24 DATA0
23 DATA1
22 DATA2
21 DATA3
20 DATA4
19 DATA5
18 DATA6
17 DATA7
Figure 4 USB3300 Pinout - Top View
The exposed flag of the QFN package must be connected to ground with a via array to the ground
plane. This is the main ground connection for the USB3300.
Pin Definitions, 32-Pin QFN Package
Table 1 USB3300 Pin Definitions
DIRECTION, ACTIVE
PIN
NAME
TYPE
LEVEL DESCRIPTION
1
GND
Ground
N/A Ground
2
GND
Ground
N/A Ground
3
CPEN
Output,
CMOS
High
External 5 volt supply enable. This pin is used to
enable the external Vbus power supply. The CPEN
pin is low on POR.
4
VBUS
I/O,
Analog
N/A VBUS pin of the USB cable. The USB3300 uses this
pin for the Vbus comparator inputs and for Vbus
pulsing during session request protocol.
Revision 1.02 (02-16-05)
6
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SMSC USB3300