USB2251 Datasheet

IC型號：
USB2251
PDF描述：
Ultra Fast USB 2.0 Multi-Format Flash Media Controller
文件大?。?/label>
845.46KB
PDF頁數(shù)：
36頁
芯片廠家：
SMSC

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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

廬

(CF), SmartMedia

(SM),

xD Picture Card

(xD)

, Memory Stick

(MS), Secure

Digital (SD), and MultiMediaCard

(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

鈥?Up to 11 GPIOs (based on configuration) for special

function use: LED indicators, button inputs, power

control to memory devices, etc.

鈥?Four GPIO鈥檚 with up to 200 mA drive.

鈥?An additional 16 GPIO鈥檚 if CF is not used.

Datasheet

On Board 24MHz Crystal Driver Circuit

Optional external 24MHz clock input

4 Independent Internal Card Power FETs

鈥?200mA each

鈥?"Fold-back" short circuit current protected

8051 8-bit microprocessor

鈥?60MHz - single cycle execution

鈥?64KB ROM

; 14KB RAM

General Features

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

鈥?Compact Flash Specification 4.1

鈥?Memory Stick Specification 1.43

鈥?Memory Stick Pro Format Specification 1.02

鈥?Memory Stick Pro-HG Duo Format Specification 1.01

鈥?xD Picture Card 1.2

鈥?Smart Media Specification 1.3

鈥?Secure Digital 2.0

鈥?/div>

Memory Stick, MS Duo, HS-MS, MS Pro-HG, MS Pro

鈥?/div>

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

鈥?Assembly line support

鈥?End user field upgrade support

鈥?DFU Package consists of driver, firmware, sample DFU

application and source code, DFU driver API

鈥?MultiMediaCard Specification 4.2

鈥?/div>

1/4/8 bit MMC

HS-SD, HC-SD, TransFlash鈩?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

鈥?xD player mode operation

鈥?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

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)

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