USB3300 datasheet(4/53 Pages) MICROCHIP

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USB3300

DS00001783B-page 4

 2014-2015 Microchip Technology Inc.

1.0

INTRODUCTION

1.1

General Description

The USB3300 is an industrial temperature Hi-Speed USB Physical Layer Transceiver (PHY). The USB3300 uses a low

pin count interface (ULPI) to connect to a ULPI compliant Link layer. The ULPI interface reduces the UTMI+ interface

from 54 pins to 12 pins using a method of in-band signaling and status byte transfers between the Link and PHY.

This PHY was designed from the start with the ULPI interface. No UTMI to ULPI wrappers are used in this design which

provides a seamless ULPI to Link interface. The result is a PHY with a low latency transmit and receive time. Microchip’s

low latency high speed and full speed receiver provide the option of re-using existing UTMI Links with a simple wrapper

to convert UTMI to ULPI.

The ULPI interface allows the USB3300 PHY to operate as a device, host, or an On-The-Go (OTG) device. Designs

using the USB3300 PHY as a device, can add host and OTG capability at a later date with no additional pins.

The ULPI interface, combined with Microchip’s proprietary technology, makes the USB3300 the ideal method of adding

Hi-Speed USB to new designs. The USB3300 features an industry leading small footprint package (5mm by 5mm) with

sub 1mm height. In addition the USB3300 integrates all DP and DM termination resistances and requires a minimal

number of external components.

The ULPI interface consists of 12 interface pins; 8 bi-directional data pins, 3 control pins, and a 60 MHz clock. By using

the 12 pin ULPI interface the USB3300 is able to provide support for the full range of UTMI+ Level 3 through Level 0,

as shown in Figure 1-2. This allows USB3300 to work as a HS and FS peripheral and as a HS, FS, and LS Host.

The USB3300 can also, as an option, fully support the On-the-Go (OTG) protocol defined in the On-The-Go Supplement

to the USB 2.0 Specification. On-the-Go allows the USB3300 to function like a host, or peripheral configured dynamically

by software. For example, a cell phone may connect to a computer as a peripheral to exchange address information or

connect to a printer as a host to print pictures. Finally the OTG enabled device can connect to another OTG enabled

device to exchange information. All this is supported using a single low profile Mini-AB USB connector.

Designs not needing OTG can ignore the OTG feature set.

In addition to the advantages of the leading edge ULPI interface, the use of Microchip’s advanced analog technology

enables the USB3300 to consume a minimum amount of power which results in maximized battery life for portable appli-

cations.

FIGURE 1-1:

BASIC ULPI USB DEVICE BLOCK DIAGRAM

USB3300

Hi-Speed

Analog

w/ OTG

ULPI

Digital

Logic

USB

Connector

(Standard

or Mini)

ULPI

LINK

VBUS

STP

CLK

DIR

NXT

DATA[7:0]

32 Pin QFN

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