USB2231 Datasheet, PDF (1/26 Pages) SMSC Corporation – 5th GENERATION HI-SPEED USB FLASH MEDIA AND CIR CONTROLLER WITH INTEGRATED CARD POWER FETs

USB2231/USB2232
5th Generation Hi-Speed
USB Flash Media and
CIR Controller with
Integrated Card Power
FETs
PRODUCT FEATURES
Datasheet
CIR Controller
■ Consumer IR (CIR) Controller with support for all
popular CIR formats.
Flash Media Controller
■ 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), High Speed 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 Hi-Speed USB
— 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 with short circuit protection for
supplying flash media card power
■ 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 Hi-Speed USB Transceiver
— A Bi-directional Control and two Bi-directional Bulk
Endpoints are provided.
■ 8051 8 bit microprocessor
— Provides low speed control functions
— 30 Mhz execution speed at 1 clock per instruction cycle
average
1.xD Picture Card not applicable to USB2231
— 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
— Two, Double Buffered Bulk Endpoints
— Two, Bi-directional 512 Byte Buffers for Bulk Endpoints
— 64 Byte RX Control Endpoint Buffer
— 64 Byte TX Control Endpoint Buffer
■ Internal or External Program Memory Interface
— 76K Byte Internal Code Space or Optional 128K 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 Hi-Speed USB Sampling,
Configurable MCU clock
■ Supports firmware upgrade via USB bus if “boot
block” Flash program memory is used
■ 12 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^TM - 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 TQFP Package (1.0mm height, 14mmx14mm
footprint); green, lead-free package also available.
SMSC USB2231/USB2232
DATASHEET
Revision 1.3 (07-12-05)