USB334X datasheet(7/92 Pages) MICROCHIP

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DS00002646A-page 7

USB334x

2.0

PIN LOCATIONS AND DEFINITIONS

2.1

USB334x Pin Locations and Descriptions

2.1.1

USB3341, USB3346, AND USB3347 PIN DIAGRAM AND PIN DEFINITIONS

The illustration below is viewed from the top of the package.

The following table details the pin definitions for the figure above.

FIGURE 2-1:

USB3341, USB3346, AND USB3347 PIN LOCATIONS - TOP VIEW

TABLE 2-1:

USB3341, USB3346, AND USB3347 PIN DESCRIPTIONS

Name

Direction/

Type

Active

Level

Description

1CLKOUT

Output,

CMOS

N/A

ULPI Clock Output Mode:

60MHz ULPI Clock Outputput. All ULPI signals are

driven synchronous to the rising edge of this clock.

ULPI Clock Input Mode:

Connect this pin to VDD18 to configure 60MHz ULPI

Clock Input mode as described in Section 5.5.1.

2NXT

Output,

CMOS

High

The PHY asserts NXT to throttle the data. When the

Link is sending data to the PHY, NXT indicates when

the current byte has been accepted by the PHY.

3DATA[0]

I/O,

CMOS

N/A

ULPI bi-directional data bus. DATA[0] is the LSB.

4DATA[1]

I/O,

CMOS

N/A

ULPI bi-directional data bus.

VBUS

VDD33

NXT

DATA0

DATA2

DATA3

DATA1

VBAT

CLKOUT

24Pin QFN

4x4mm

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