Hi-Speed USB Host or Device PHY with ULPI Low Pin Interface

Revision 1.02 (02-16-05)

6

SMSC USB3300

PRODUCT PREVIEW

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

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

PIN

NAME

DIRECTION,

TYPE

ACTIVE

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.

GND

GND

CPEN

VBUS

ID

VDD3.3

DM

DP

DATA0

DATA7

DATA5

DATA6

DATA2

DATA3

DATA4

DATA1

USB3300

Hi-Speed USB2

ULPI PHY

32 Pin QFN

1

2

3

4

5

6

7

8

USB3300

Hi-Speed USB

ULPI PHY

32 Pin QFN

GND FLAG

24

23

22

21

20

19

18

17