Ultra Fast USB 2.0 Multi-Format, SD/MMC, and MS Flash Media Controllers
Datasheet
Chapter 2 Acronyms
ATA: Advanced Technology Attachment
FET: Field Effect Transistor
LUN: Logical Unit Number
MMC: MultiMediaCard1
MSC: Memory Stick Controller2
PLL: Phase-Locked Loop
QFN: Quad Flat No leads
RoHS: Restriction of Hazardous Substances Directive
RXD: Received eXchange Data
SDIO: Secure Digital Input/Output
SDC: Secure Digital Controller
SIE: Serial Interface Engine
TXD: Transmit eXchange Data
UART: Universal Asynchronous Receiver-Transmitter
UCHAR: Unsigned Character
UINT: Unsigned Integer
*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.
1.MMC, SDIO, and SDC are not applicable to USB2242/42i.
2.Not applicable to USB2244/44i.
SMSC USB224x
7
Revision 2.1 (02-07-13)
DATASHEET
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