5th Generation Hi-Speed USB Flash Media and CIR Controller with Integrated Card Power FETs
Datasheet
Chapter 1 General Description
The USB2231/USB2232 is a Hi-Speed USB Consumer IR and Bulk Only Mass Storage Class
Peripheral Controller. The Bulk Only Mass Storage Class Peripheral Controller supports CompactFlash
(CF) in True IDE Mode only, SmartMedia (SM), Memory Stick (MS) including both serial and parallel
interface and Secure Digital/MultiMediaCard (SD/MMC) flash memory devices. It provides a single chip
solution for the most popular flash memory cards in the market. In addition, the CIR controller consists
of the SMSC CIrCC block, which includes a Synchronous Communications Engine (SCE) and
hardware demodulators for the supported CIR formats.
The device consists of a USB2.0 PHY and SIE, buffers, Fast 8051 microprocessor with expanded
scratchpad, and program SRAM, and CIR, CF, MS, SM and SD controllers. The SD controller supports
both SD and MMC devices.
Provisions for external Flash Memory up to 128K bytes for program storage is provided (note: when
Bank switching is enabled the upper 64K will map into the 8051 ROM space, otherwise, only the first
64K bytes is used).
12K bytes of scratchpad SRAM and 768Bytes of program SRAM are also provided.
Twelve GPIO pins are provided for indicators, external serial EEPROM for OEM ID and system
configuration information, and other special functions.
Internal power FETs are provided to directly supply power to the xD/SM, MMC/SD and MS/MSPro
cards.
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 (07-12-05)
6
SMSC USB2231/USB2232
DATASHEET
SMSC [ SMSC CORPORATION ]
