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Austin Design Center
11000 North Mopac Expressway
Stonelake Bldg. 6 Suite 500
Austin, Texas 78759
EVB-USB2228-CRB Users Guide
Rev. B.1
Updated 2006-12-14
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.
Evaluation Board: Two-layer EVB-USB2228-CRB - Rev. B.1 Users Guide
Customer Evaluation Board for USB2228 in QFP-128 Package
Features
• Operates either USB Bus-powered or from a single voltage (+5.0V, regulated) ‘wall wart’ external power supply
• Low Cost 2-Layer Space-saving Design
• Supports these Media Types: Compact Flash, Micro Drive, MultiMediaCard, xD picture Card, Smart Media,
Secure Digital, Memory Stick, High Speed Memory Stick, Memory Stick Pro
• Access to up to Four Memory Devices at the same time
• Software Upgradeable through On-Board Flash Socket
• Serial EEPROM capable
• Single Onboard +3.3V Regulator
• Internal FET Power Switching for All Media Types (except CF)
• Single Crystal Clock Source
General Description
The EVB-USB2228-CRB is a platform featuring USB2228 card reader. The board connects to a USB 2.0 port (J1),
and optionally to a 5.0V external supply (J2: 2.1mm, tip -- POS). The board provides four media sockets supporting
at least nine different media types. This board demonstrates a small footprint, low-cost implementation of the
USB2228 with a robust feature set.
The card features an on-board EEPROM for configuration and serial number data, as well as a socket for a Flash
device for firmware updates. The schematics for this board indicate which components are required for each
programming and configuration option.
Power Consumption
These values represent a card with no media installed.
435uA Suspended
55mA Enumerated (Active and Idle)
Jumper Descriptions
ROMEN: J30 Jumper pins 1 & 2 to enable the Flash installed at U30.
Power Select: J3 Jumper pins 1 & 2 to select Bus Powered mode (USB-supplied power).
Jumper pins 2 & 3 to select Self Powered mode (externally-supplied 5.0V).
IrDA: J4 This connector is not used with the USB2228 device. This 6-pin header is provided to
support the USB2230 device.
SMSC 2 12/14/2006
Evaluation Board: Two-layer EVB-USB2228-CRB - Rev. B.1 Users Guide
Board Illustrations
TOP Side BOTTOM Side
EEPROM Configuration Settings
The EEPROM Default Configuration Settings are shown below. Please note that this card requires the Reverse SD
Card Write Protect Sense bit to be set for correct operation.
SMSC 3 12/14/2006

Produktspecifikationer

Varumärke: Microchip
Kategori: Inte kategoriserad
Modell: USB2228

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