USB3300_07 Datasheet, PDF (10/55 Pages) SMSC Corporation – Hi-Speed USB Host, Device or OTG PHY with ULPI Low Pin Interface

Chapter 3 Pin Layout
Hi-Speed USB Host, Device or OTG PHY with ULPI Low Pin Interface
Datasheet
3.1
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 Diagram
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
3.2
PIN
1
2
3
Figure 3.1 USB3300 Pin Diagram - 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 Function
Table 3.1 USB3300 Pin Definitions 32-Pin QFN Package
NAME
GND
GND
CPEN
DIRECTION, ACTIVE
TYPE
LEVEL DESCRIPTION
Ground
N/A Ground
Ground
N/A Ground
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.
Revision 1.08 (11-07-07)
10
DATASHEET
SMSC USB3300