Microchip EVB-USB3320 Manual

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SMSC EVB-USB3320 USER MANUAL Revision 1.0 (02-09-10)
Copyright © 2010 SMSC or its subsidiaries. All rights reserved.
Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information
sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed
for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office
to obtain the latest specifications before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor
devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms
and conditions of the most recently dated version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement").
The product may contain design defects or errors known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly
sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product
failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further
testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be
obtained by visiting SMSC’s website at http://www.smsc.com. SMSC is a registered trademark of Standard Microsystems Corporation (“SMSC”). Product names and
company names are the trademarks of their respective holders.
SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND ALL WARRANTIES
ARISING FROM ANY COURSE OF DEALING OR USAGE OF TRADE. IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT, INCIDENTAL, INDIRECT,
SPECIAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES; OR FOR LOST DATA, PROFITS, SAVINGS OR REVENUES OF ANY KIND; REGARDLESS OF THE
FORM OF ACTION, WHETHER BASED ON CONTRACT; TORT; NEGLIGENCE OF SMSC OR OTHERS; STRICT LIABILITY; BREACH OF WARRANTY; OR
OTHERWISE; WHETHER OR NOT ANY REMEDY OF BUYER IS HELD TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
EVB-USB3320 USB Transceiver
Evaluation Board User Manual
EVB-USB3320 USB Transceiver Evaluation Board User Manual
Revision 1.0 (02-09-10) 2 SMSC EVB-USB3320
USER MANUAL
1 Introduction
This user manual is for the USB3320 USB Transceiver Evaluation Board (EVB) for use with USB3320
products with the integrated USB switch.
The USB3320 features a ULPI interface to support systems with USB Host, Device, or On-the-Go
(OTG) capability. The integrated switch can be used to multiplex a Full Speed USB signal or audio
signals over the HS USB DP/DM pins. SMSC supplies a complete family of transceiver products to
meet the needs of many applications.
2 Overview
The EVB-USB3320 is a Daughter Card designed to plug into a user's test system using a T&MT
connector. The card attaches to a USB link layer to create a USB Host, Device, or On-the-Go (OTG)
system. The board edge connector meets the UTMI+ Low Pin Interface (ULPI) Standard requirements
for the T&MT connector.
A link to the ULPI Working Group Page is available at www.smsc.com or may be obtained from your
local FAE. The EVB-USB3320 includes USB3320 packaged silicon and all external components
required for the USB transceiver function.
This manual describes PCB assembly PCB-7163AZ.
2.1 Supplying VBUS Voltage
In Host or OTG operation, the EVB-USB3320 must provide 5 Volts on V
BUS at the USB connector. The
EVB-USB3320 includes a switch that can drive VBUS using the 5 Volt supply that comes from pin 28
of the T&MT connector.
The VBUS switch is controlled by the CPEN signal from the USB3320. The USB controller dictates
the state of CPEN by programming the ULPI register in the USB3320. The 5 Volt switch is backdrive
protected when in the off state. The switch does not provide protection from reverse currents when it
is on. See Section 2.9 and Section 2.10 for more information on configuring the EVB-USB3320 for
OTG and Host operation.
2.2 1.8 Volt Power Supply
The EVB-USB3320 EVB has a Low Drop-Out (LDO) Regulator that drives the USB3320 VDD18 pins.
This LDO requires a nominal 3.3 Volt supply capable of providing 80mA of current to be present at the
T&MT connector (pins 8, 16, 57, or 69).
2.3 ULPI I/O Voltage
The USB3320 supports variable ULPI I/O voltage signaling. The ULPI I/O voltage is supplied in one
of two ways. By default, the EVB is shipped with VDDIO supplied by the on-board LDO.
Resistor R18 is used to set VDDIO, the digital logic high voltage. To change the value of VDDIO,
calculate a new value for R18 (ohms) as follows.
R18 = (VDDIO/1.225-1) x 169000
VDDIO must be in the range of 1.8 Volts - 3.3 Volts nominal.
VDDIO can also be supplied to the USB3320 from the T&MT connector instead of using the LDO. To
do this, the LDO (U10) must be removed.
The VDDIO voltage level that has been configured on the EVB-USB3320 must be the same as the
ULPI I/O voltage level that the link is using.

Produkt Specifikationer

Mærke: Microchip
Kategori: Ikke kategoriseret
Model: EVB-USB3320

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