Microchip USB2503A Manual

Microchip Ikke kategoriseret USB2503A

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SMSC EVB-USB2503 Revision A3 (06-01-07)

The information contained herein is proprietary to SMSC and shall be used solely in accordance with the agreement pursuant to which

it is provided. 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 unless specifically specified otherwise. 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 ("SMSC").

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 REV-ENUES 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-USB2503 Evaluation Board

Revision A3 (06-01-07) SMSC EVB-USB2503

1 Overview

1.1 Features

Operates from a single voltage (+5.0V, regulated) wall wart external power supply or bus-powered

from upstream VBUS

Onboard +3.3V Regulator (Option A linear, Option B switching regulator)

Self-powered or bus-powered operation dynamically switched

Serial EEPROM for configuration information mounted in a socket

Optional pull-up resistors for disabling individual downstream ports

Green LED indicators

Individual port over-current sense and power switching

Multi-TT enabled

High-speed/Full-speed capable

100mS down stream port power on time

PCB - 2.6” X 3.5”, 4-layers

1.2 General Description

The primary purpose of this board is to demonstrate a full-featured HUB configuration for the SMSC

USB2503 3-port HUB. This does not represent a minimal cost design. A view of the silk screen is

shown in figure 1. The EEPROM allows for modifications to the base configuration - for example one

or more down stream ports can be disabled or configured as non-removable for compound device

application. The DID, PID or DID information can be changed for the HUB.

Produkt Specifikationer

Mærke:	Microchip
Kategori:	Ikke kategoriseret
Model:	USB2503A

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