Bus Powered USB2.0 Flash Media Controller
Datasheet
Chapter 1
General Description
The USB2224 is a USB2.0 Bulk Only Mass Storage Class Peripheral Controller intended for supporting
CompactFlash (CF and CF Ultra I/II) in True IDE Mode only, SmartMedia (SM) and XD cards, Memory
Stick (MS), Memory Stick DUO (MSDUO) and Memory Stick Pro (MSPRO), Secure Digital (SD), and
MultiMediaCard (MMC) flash memory devices. It provides a single chip solution for the most popular flash
memory cards in the market.
The device consists of a USB2.0 PHY and SIE, buffers, Fast 8051 microprocessor with expanded
scratchpad, and program SRAM, and CF, MS, SM and SD controllers. The SD controller supports both SD
and MMC devices.
Provisions for external Flash Memory up to 64K bytes for program storage is provided.
12K bytes of scratchpad SRAM and 768 Bytes of program SRAM are also provided.
Fifteen GPIO pins are provided for indicators, external serial EEPROM for OEM id and system
configuration information, and other special functions.
The internal ROM program is capable of implementing any combination of single or multi-LUN
CF/SD/MMC/SM/MS reader functions with individual card power control and activity indication. SMSC also
provides licenses** for Win98 and Win2K drivers and setup utilities. Note: Please check with SMSC for
precise features and capabilities for the current ROM code release.
*Note: In order to develop, make, use, or sell readers and/or other products using or incorporating any of the SMSC devices
made the subject of this document or to use related SMSC software programs, technical information and licenses under patent
and other intellectual property rights from or through various persons or entities, including without limitation media standard
companies, forums, and associations, and other patent holders may be required. These media standard companies, forums,
and associations include without limitation the following: Sony Corporation (Memory Stick, Memory Stick Pro); SD3 LLC
(Secure Digital); MultiMedia Card Association (MultiMediaCard); the SSFDC Forum (SmartMedia); the Compact Flash
Association (Compact Flash); and Fuji Photo Film Co., Ltd., Olympus Optical Co., Ltd., and Toshiba Corporation (xD-Picture
Card). SMSC does not make such licenses or technical information available; does not promise or represent that any such
licenses or technical information will actually be obtainable from or through the various persons or entities (including the media
standard companies, forums, and associations), or with respect to the terms under which they may be made available; and is
not responsible for the accuracy or sufficiency of, or otherwise with respect to, any such technical information.
SMSC's obligations (if any) under the Terms of Sale Agreement, or any other agreement with any customer, or otherwise, with
respect to infringement, including without limitation any obligations to defend or settle claims, to reimburse for costs, or to pay
damages, shall not apply to any of the devices made the subject of this document or any software programs related to any of
such devices, or to any combinations involving any of them, with respect to infringement or claimed infringement of any existing
or future patents related to solid state disk or other flash memory technology or applications ("Solid State Disk Patents"). By
making any purchase of any of the devices made the subject of this document, the customer represents, warrants, and agrees
that it has obtained all necessary licenses under then-existing Solid State Disk Patents for the manufacture, use and sale of
solid state disk and other flash memory products and that the customer will timely obtain at no cost or expense to SMSC all
necessary licenses under Solid State Disk Patents; that the manufacture and testing by or for SMSC of the units of any of the
devices made the subject of this document which may be sold to the customer, and any sale by SMSC of such units to the
customer, are valid exercises of the customer's rights and licenses under such Solid State Disk Patents; that SMSC shall have
no obligation for royalties or otherwise under any Solid State Disk Patents by reason of any such manufacture, use, or sale of
such units; and that SMSC shall have no obligation for any costs or expenses related to the customer's obtaining or having
obtained rights or licenses under any Solid State Disk Patents.
SMSC MAKES NO WARRANTIES, EXPRESS, IMPLIED, OR STATUTORY, IN REGARD TO INFRINGEMENT OR OTHER
VIOLATION OF INTELLECTUAL PROPERTY RIGHTS. SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES
AGAINST INFRINGEMENT AND THE LIKE.
No license is granted by SMSC expressly, by implication, by estoppel or otherwise, under any patent, trademark, copyright,
mask work right, trade secret, or other intellectual property right.
**To obtain this software program the appropriate SMSC Software License Agreement must be executed and in effect. Forms
of these Software License Agreements may be obtained by contacting SMSC.
Revision 1.3 (09-21-04)
Page 4
SMSC USB2224
DATASHEET
SMSC [ SMSC CORPORATION ]
