USB2227 Datasheet, PDF (1/26 Pages) SMSC Corporation – 4TH GENERATION USB2.0 FLASH MEDIA CONTROLLER WITH INTEGRATED CARD POWER FETS

USB2227/USB2228
4th Generation USB2.0
Flash Media Controller
with Integrated Card
Power FETs
PRODUCT FEATURES
Datasheet
■ Complete System Solution for interfacing
SmartMedia^TM (SM) or xD Picture Card^TM (xD)¹,
Memory Stick^TM (MS), High Speed Memory Stick
(HSMS), Memory Stick PRO (MSPRO), MS Duo^TM,
Secure Digital (SD), Mini-Secure Digital (Mini-SD),
TransFlash (SD), MultiMediaCard^TM (MMC),
Reduced Size MultiMediaCard (RS-MMC), NAND
Flash, Compact Flash^TM (CF) and CF Ultra^TM I & II,
and CF form-factor ATA hard drives to USB2.0 bus
— Supports USB Bulk Only Mass Storage Compliant
Bootable BIOS
■ Support for simultaneous operation of all above
devices. (only one at a time of each of the following
groups supported: CF or ATA drive, SM or XD or
NAND, SD or MMC)
■ On-Chip 4-Bit High Speed Memory Stick and MS
PRO Hardware Circuitry
■ On-Chip firmware reads and writes High Speed
Memory Stick and MS PRO
■ 1-bit ECC correction performed in hardware for
maximum efficiency
■ Hardware support for SD Security Command
Extensions
■ On-chip power FETs for supplying flash media card
power with minimum board components
■ USB Bus Power Certified
■ 3.3 Volt I/O with 5V input tolerance on VBUS/GPIO3
■ Complete USB Specification 2.0 Compatibility for Bus
Powered Operation
— Includes USB2.0 Transceiver
— A Bi-directional Control and a Bi-directional Bulk
Endpoint are provided.
■ 8051 8 bit microprocessor
— Provides low speed control functions
— 30 Mhz execution speed at 4 cycles per instruction
average
— 12K Bytes of internal SRAM for general purpose
scratchpad
— 768 Bytes of internal SRAM for general purpose
scratchpad or program execution while re-flashing
external ROM
■ Double Buffered Bulk Endpoint
— Bi-directional 512 Byte Buffer for Bulk Endpoint
— 64 Byte RX Control Endpoint Buffer
— 64 Byte TX Control Endpoint Buffer
■ Internal or External Program Memory Interface
— 64K Byte Internal Code Space or Optional 64K Byte
External Code Space using Flash, SRAM or EPROM
memory.
■ On Board 24Mhz Crystal Driver Circuit
■ Can be clocked by 48MHz external source
■ On-Chip 1.8V Regulator for Low Power Core
Operation
■ Internal PLL for 480Mhz USB2.0 Sampling,
Configurable MCU clock
■ Supports firmware upgrade via USB bus if “boot
block” Flash program memory is used
■ 15 GPIOs for special function use: LED indicators,
button inputs, power control to memory devices, etc.
— Inputs capable of generating interrupts with either edge
sensitivity
— Attribute bit controlled features:
— Activity LED polarity/operation/blink rate
— Full or Partial Card compliance checking
— Bus or Self Powered
— LUN configuration and assignment
— Write Protect Polarity
— SmartDetach™ Detach from USB when no Card
Inserted for Notebook apps
— Cover Switch operation for xD compliance
— Inquiry Command operation
— SD Write Protect operation
— Older CF card support
— Force USB 1.1 reporting
— Internal or External Power FET operation
■ Compatible with Microsoft WinXP, WinME, Win2K
SP3, Apple OS10, Softconnex, and Linux Multi-LUN
Mass Storage Class Drivers
■ Win2K, Win98/98SE and Apple OS8.6 and OS9
Multi-LUN Mass Storage Class Drivers available from
SMSC
■ 128 Pin VTQFP Package (1.0mm height, 14mm
x14mm footprint); green, lead-free package also
available
1.xD Picture Card not applicable to USB2227.
SMSC USB2227/USB2228
DATASHEET
Revision 1.77 (06-13-05)