SMSC USB2250i - Manual

SMSC USB2250/50i/51/51i DATASHEET Revision 1.1 (05-29-08)
Datasheet PRODUCT FEATURES
USB2250/50i/51/51i
Ultra Fast USB 2.0 Multi-Slot
Flash Media Controller
General Description
The SMSC USB2250/50i/51/51i 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 USB2250/50i/51/51i 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.
General Features
„ 128-pin VTQFP (14x14mm) 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
„ Product name with “i” denotes the version that supports
the industrial temperature range of -40ºC to 85ºC
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
– CF UDMA Modes 0-4
– CF PIO Modes 0-6
— Memory Stick Specification 1.43
— Memory Stick Pro Format Specification 1.02
— Memory Stick Pro-HG Duo Format Specification 1.01
– Memory Stick, MS Duo, HS-MS, MS Pro-HG, MS Pro
— xD Picture Card 1.2
— Smart Media Specification 1.3
— Secure Digital 2.0
– HS-SD, HC-SD, TransFlash™ and reduced form factor
media
— MultiMediaCard Specification 4.2
– 1/4/8 bit MMC
„ SDIO and MMC Streaming Mode support
„ Extended configuration options
— xD player mode operation
— Socket switch polarities, etc.
„ Media Activity LED
„ 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. The number of actual
GPIO’s depends on the implementation configuration
used.
— Four GPIO’s with up to 200 mA drive
— An additional 16 GPIO’s if CF is not used
„ On Board 24MHz Crystal Driver Circuit
„ Optional external 24MHz clock input
„ 4 Independent Internal Card Power FET
— 200mA each
— "Fold-back" short circuit current protected
„ 8051 8-bit microprocessor
— 60MHz - single cycle execution
— 64KB ROM; 14KB RAM
„ 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
„ Optional custom firmware with external ROM (up to 128k)
„ Please see the USB2250/50i/51/51i 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 ReadyBoost TM
1.) xD Picture Card not applicable to USB2251.