Microchip USB2524 Handleiding

Microchip Niet gecategoriseerd USB2524

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SMSC EVB-USB2524 Revision 0.9 (09-28-06)
Copyright ยฉ 2006 SMSC or its subsidiaries. All rights reserved.
The information contained herein is confidential and proprietary to SMSC, shall be used solely in accordance with the agreement pursuant
to which it is provided, and shall not be reproduced or disclosed to others without the prior written consent of SMSC. Although the
information is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to this
document and to specifications and product descriptions at any time without notice. Neither the provision of this information nor the
sale of the described semiconductor devices conveys any licenses under any patent rights or other intellectual property rights of SMSC
or others. The product may contain design defects or errors known as anomalies, including but not necessarily limited to any which may
be identified in this document, which may cause the product to deviate from published specifications. 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 will be fully at
the risk of the customer. SMSC is a registered trademark of Standard Microsystems Corporation (โ€œSMSCโ€).
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-USB2524 Evaluation
Board Revision B1
EVB-USB2524 Evaluation Board Revision B1
Revision 0.9 (09-28-06) SECURITY LEVEL SMSC EVB-USB2524
2
1 Overview
The SMSC USB2524 MultiSwitchTM is an USB2.0 compliant switching hub with two up-stream ports
and four down-stream ports. The EVB-USB2524 Evaluation Board demonstrates a stand alone
application for the switching hub with all the features listed below. Each of the down stream ports can
individually be assigned to up-stream port 1 or up-stream port 2. The port assignment can be
dynamically changed with user accessible switches individually for each port.
1.1 Features
๎š„Operates from a single voltage (+5.0V, regulated) 'wall wart' external power supply
๎š„Low Cost 2-Layer Design
๎š„Self-powered operation
๎š„Multi-TT enabled
๎š„Supports four program selection options: Internal defaults, EEPROM (default), SMBus, Strapping
options
๎š„Serial EEPROM for configuration in a socket for easy programming
๎š„Single Onboard +3.3V Regulator
๎š„LED status modes supported: USB, BASIC, and DUAL LED
๎š„Single Crystal Clock Source
๎š„Individual port over-current sensing
๎š„Individual port power control
๎š„High-speed, Full-speed, and Low-speed capable
๎š„Port Assignment interface
๎š„Port OCS/Port Power Control interface
๎š„Optional ESD and EMI footprints are provided
1.2 General Description
The EVB-USB2524 is a demonstration and evaluation platform featuring the USB2524 MultiSwitch
TM 4-port USB2.0
Switching Hub. It is designed to robustly demonstrate this unique device's features using a low-cost PCB
implementation.
The EVB-USB2524 features an on-board EEPROM for VID/PID/DID and configuration strings, such as switching
options, LED status options, and non-removable or disabled configuration for each port. The manufacturer, product
and serial strings for the hub can be changed in the EEPROM as well.
The EVB-USB2524 can also be configured through changing population of resistors to access internal โ€œstrapping
optionsโ€, without using the EEPROM.
The schematic for the EVB-USB2524 indicates which components are required for each configuration option.
EVB-USB2524 Evaluation Board Revision B1
SMSC EVB-USB2524 SECURITY LEVEL Revision 0.9 (09-28-06)
3
2 Getting Started
2.1 Port Assignment
The EVB-USB2524 port assignments are selected by four level switches SW1 to SW4 located in the
upper right-hand corner. When only one up-stream port, โ€œUS 1โ€ or โ€œUS 2โ€ is connected to an
operational host, all down-stream ports will be assigned to that host. In this case the switches do not
have any effect. When both up-stream ports are connected to operational hosts โ€œUS 2โ€ is selected with
switch in the bottom position and โ€œUS 1โ€ with the switch in the top position. Figure 2.1 shows the
switches in detail.
Down-stream ports are numbered 1 through 4. The switches are labeled accordingly with the left-most
switch controlling down-stream port 1 and the right-most switch close to the supply connector
controlling down-stream port 4.
Figure 2.1

Product specificaties

Merk: Microchip
Categorie: Niet gecategoriseerd
Model: USB2524

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