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USB2250

Description
Ultra Fast USB 2.0 Multi-Format Flash Media Controller
File Size447KB,36 Pages
ManufacturerSMSC
Websitehttp://www.smsc.com/
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USB2250 Overview

Ultra Fast USB 2.0 Multi-Format Flash Media Controller

USB2250/51/59
Ultra Fast USB 2.0 Multi-Format
Flash Media Controller
PRODUCT FEATURES
General Description
The SMSC USB2250/51/59 is a USB 2.0 compliant, high
speed Mass Storage Class Peripheral Controller intended for
reading and writing to more than 24 popular flash media
formats from the CompactFlash
®
(CF), SmartMedia
TM
(SM),
xD Picture Card
TM
(xD)
1
, Memory Stick
TM
(MS), Secure
Digital (SD), and MultiMediaCard
TM
(MMC) families.
The SMSC USB2250/51/59 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.
GPIO configuration and polarity
— Up to 11 GPIOs (based on configuration) for special
function use: LED indicators, button inputs, power
control to memory devices, etc.
— Four GPIO’s with up to 200 mA drive.
— An additional 16 GPIO’s if CF is not used.
Datasheet
On Board 24MHz Crystal Driver Circuit
Optional external 24MHz clock input
4 Independent Internal Card Power FETs
— 200mA each
— "Fold-back" short circuit current protected
8051 8-bit microprocessor
— 60MHz - single cycle execution
— 64KB ROM
2
; 14KB RAM
General Features
1
28-pin VTQFP lead-free RoHS compliant package
Targeted for applications in which single or "combo"
media sockets are used. Supports multiple simultaneous
card insertions
Flexible assignment of number of LUNs and how card
types are associated with the LUNs
Hardware-controlled data flow architecture for all self-
mapped media
Pipelined hardware support for access to non-self-
mapped media
Hardware Features
Single Chip Flash Media Controller with non-multiplexed
interface for independent card sockets
Flash Media Specification Revision Compliance
— Compact Flash Specification 4.1
— Memory Stick Specification 1.43
— Memory Stick Pro Format Specification 1.02
— Memory Stick Pro-HG Duo Format Specification 1.01
— xD Picture Card 1.2
— Smart Media Specification 1.3
— Secure Digital 2.0
Memory Stick, MS Duo, HS-MS, MS Pro-HG, MS Pro
CF UDMA Modes 0-4
CF PIO Modes 0-6
Internal Regulator for 1.8V core operation
Optimized pinout improves signal routing, easing
implementation and allowing for improved signal integrity.
OEM Selectable
Features
VID/PID/Language ID
28-character Manufacturer ID and Product string
12-hex digit (max) Serial Number string
Customizable Vendor specific data by optional use of
external serial EEPROM
Bus- or Self-powered selection
LED blink interval or duration
Internal power FET configuration
Software Features
Optimized for low latency interrupt handling
Reduced memory footprint
Device Firmware Upgrade (DFU) support of external
EEPROM or External Flash
— Assembly line support
— End user field upgrade support
— DFU Package consists of driver, firmware, sample DFU
application and source code, DFU driver API
— MultiMediaCard Specification 4.2
1/4/8 bit MMC
HS-SD, HC-SD, TransFlash™ and reduced form factor
media
Optional (Mandatory on the USB2259) custom firmware
with external ROM (up to 128k)
Please see the USB2250/USB2251 Software Release
Notes for additional Software Features
SDIO and MMC Streaming Mode support
Extended configuration options
— xD player mode operation
— Socket switch polarities, etc.
Applications
Media Activity LED
Flash Media Card Reader/Writer
Printers
Desktop and Mobile PCs
Consumer A/V
Media Players/Viewers
Vista ReadyBoost
TM
1.) xD Picture Card not applicable to USB2251
2.USB2259 uses external ROM only, internal ROM unavailable
SMSC USB2250/51/59
DATASHEET
Revision 2.6 (05-08-08)

USB2250 Related Products

USB2250 USB2259 USB2251
Description Ultra Fast USB 2.0 Multi-Format Flash Media Controller Ultra Fast USB 2.0 Multi-Format Flash Media Controller Ultra Fast USB 2.0 Multi-Format Flash Media Controller

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