Instrukcja obsługi Microchip EVB-USB3330

Microchip Niesklasyfikowane EVB-USB3330

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SMSC EVB-USB3330 USER MANUAL Revision 1.1 (02-02-10)
Copyright © 2009 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
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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
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EVB-USB3330 USB Transceiver
Evaluation Board User Manual
EVB-USB3330 USB Transceiver Evaluation Board User Manual
Revision 1.1 (02-02-10) 2 SMSC EVB-USB3330
USER MANUAL
1 Introduction
This user manual is for the USB3330 USB Transceiver Evaluation Board (EVB) for use with USB3330
products.
The USB3330 features a ULPI interface to support systems with USB Host, Device, or On-the-Go
(OTG) capability. SMSC supplies a complete family of transceiver products to meet the needs of many
applications.
2 Overview
The EVB-USB3330 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-USB3330 includes USB3330 packaged silicon and all external components
required for the USB transceiver function.
This manual describes PCB assembly PCB-7164AZ.
2.1 Supplying VBUS Voltage
In Host or OTG operation, the EVB-USB3330 must provide 5 Volts on V
BUS at the USB connector. The
EVB-USB3330 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 DRVVBUS pin on the T&MT connector. The presence of a zero
ohm resistor at R13 will route the 5V signal to the part and USB connectors. If R13 is empty then the
EVB will not supply 5V. The board will operate as a USB Peripheral. The 5 Volt switch is backdrive
protected when in the off state. See Section 2.7 and Section 2.8 for more information on configuring
the EVB-USB3330 for OTG and Host operation.
The zero ohm resistor on R24 can be removed to permanently leave the VBUS switch on.
2.2 Edge Connector for Digital I/O
The T&MT edge connector is compliant to the ULPI specification. Part numbers and manufacturers for
this connector and it’s mate are given in Table 2.1
2.3 REFCLK Frequency Selection
The EVB-USB3330 offers a user selectable reference clock frequency. R11, R14-R16 are used to
configure the REF[1:0] signals which will select the reference clock frequency desired on the EVB-
USB3330. Ensure that the frequency of the reference clock or reference crystal being used matches
the desired operation frequency configured based on Table 2.2 below. By default, the EVB-USB3330
Table 2.1 Edge Connector on the EVB-USB3330
PART NUMBER DESCRIPTION MANUFACTURER
2-557101-5 100 pin edge connector on EVB-USB3330 AMP
2-557-101-5 Mating connector to the EVB-USB3330 AMP
1-1734037-0 Alternate 100 pin edge connector for EVB-USB3330 TYCO
1-1734099-0 Alternate mating connector to the EVB-USB3330 TYCO
EVB-USB3330 USB Transceiver Evaluation Board User Manual
SMSC EVB-USB3330 3 Revision 1.1 (02-02-10)
USER MANUAL
is configured for 26MHz REFCLK operation.The Resistor pads are either installed with a zero ohm
resistor, or left empty.
2.4 USB Connector
A standard Mini-AB connector is provided to attach a USB cable or connector. The footprint can also
accept a micro-AB connector. See the bill of materials in Section 6 for connector part numbers. Do not
substitute a different part number for the Mini-AB receptacle or a short circuit of the USB signals may
result at the micro-AB connector PCB footprint.
2.5 VBUS Present Detection
The USB controller must detect VBUS when a USB cable is attached in device mode or when the USB
controller turns on VBUS in host or OTG mode. The USB connector VBUS signal is connected to the
VBUS pin of the USB3330. The USB3330 includes all of the comparators required to detect VBUS and
report the state of VBUS to the USB controller via the ULPI bus.
2.6 ULPI Signal Test Points
Probe points at location J2, provide access to all ULPI signals. Install the Tektronix logic analyzer probe
retention kit at J2 to probe these signals. Ordering information for the retention kit is provided in the
bill of materials
2.7 Converting the EVB to an OTG System
“Out of the box”, the EVB-USB3330 is delivered as a USB Device system. To convert it to be a USB
OTG development board, the following modifications must be made:
1. Install R13 (zero ohm resistor). This connects the VBUS 5V switch to the VBUS signal.
2. Remove R23. This is the RVBUS value required for a USB Device.
3. Install R10 (1.0K, 1W resistor). This is the RVBUS value required for a USB OTG Device.
Since the USB3330 is designed to accommodate up to 30V on VBUS, R10 is rated at 1W to
accommodate this entire voltage range. Refer to the USB333X datasheet for more information on
sizing this resistor
2.8 Converting the EVB to a Host System
“Out of the box”, the EVB-USB3330 is delivered as a USB Device System. To convert it to be a USB
Host development board, the following modifications must be made:
1. Install R13 (zero ohm resistor). This connects the VBUS 5V switch to the VBUS signal.
2. Install C20 (150uF capacitor). This increases the value of C
VBUS to be USB 2.0 Host compliant.
Table 2.2 Reference Frequency Selection Resistor Configurations
R11 R16 R14 R15 REFCLK FREQUENCY
EMPTY INSTALL INSTALL EMPTY 13.0 MHz
INSTALL EMPTY INSTALL EMPTY 24.0 MHz
EMPTY INSTALL EMPTY INSTALL 19.2 MHz
INSTALL EMPTY EMPTY INSTALL 26.0 MHz (Default)

Specyfikacje produktu

Marka: Microchip
Kategoria: Niesklasyfikowane
Model: EVB-USB3330

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