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USB2244 Datasheet, PDF (1/22 Pages) SMSC Corporation – Ultra Fast USB 2.0 SD/MMC Flash Media Controller | |||
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USB2244/USB2244I
Ultra Fast USB 2.0 SD/MMC
Flash Media Controller
PRODUCT FEATURES
Datasheet
General Description
The SMSC USB2244/USB2244i is a USB 2.0 compliant,
high speed Bulk Only Mass Storage Class Peripheral
Controller intended for reading and writing to SD/MMC Flash
Media Cards.
The SMSC USB2244/USB2244i is a fully integrated, single
chip solution capable of ultra high performance operation.
Average sustained transfer rates exceeding 35MB/s are
possible if the media and host can support those rates.
Provisions to read/write secure media formats is also
provided.
General Features
 36-pin QFN (6x6mm) lead-free RoHS compliant package
 Hardware-controlled data flow architecture for all self-
mapped media
 Pipelined hardware support for access to non-self-
mapped media
 Product name with âiâ denotes the version that supports
the industrial temperature range of -40ºC to 85ºC
 Support included for secure media format on a licensed,
customized basis
â SD Secure
Hardware Features
 Single Chip Flash Media Reader/Writer
â Secure Digital 2.0
â HS-SD, HC-SD, TransFlash⢠and reduced form factor
media
â MultiMediaCard Specification 4.2
â 1/4/8 bit MMC
 SDIO and MMC Streaming Mode support
 Extended configuration options
â Socket switch polarities, etc.
 Media Activity LED
 GPIO configuration and polarity
â Up to 8 GPIOs for special function use: LED indicators,
power control to memory devices, etc. The number of
actual GPIOâs depends on the implementation
configuration used.
â One GPIO with up to 200 mA drive
 On Board 24MHz Crystal Driver Circuit
 Internal Card Power FET
â 200mA
â "Fold-back" short circuit current protected
 8051 8-bit microprocessor
â 60MHz - single cycle execution
â 64KB ROM; 14KB RAM
 Internal Regulator for 1.8V core operation
 Optimized pinout improves signal routing, easing
implementation and allowing for improved signal integrity
Mask Programmable Features
 VID/PID/Language ID
 28-character Manufacturer ID and Product string
 12-hex digit (max) Serial Number string
 Customizable Vendor specific data LED blink interval or
duration
Software Features
 Optimized for low latency interrupt handling
 Reduced memory footprint
 Please see the USB2244/USB2244i Software Release
Notes for additional Software Features.
Applications
 Flash Media Card Reader/Writer
 Printers
 Desktop and Mobile PCs
 Consumer A/V
 Media Players/Viewers
 Vista ReadyBoostTM
 Compatible with Microsoft Vista, Windows XP, Windows
ME, Windows 2K SP4, Apple OSx, and Linux Mass
Storage Class Drivers
SMSC USB2244/USB2244i
DATASHEET
Revision 1.0 (05-27-08)
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