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 CM220: Updateable USB2.0 Card Reader Controller

Overview

The CM220 is a USB 2.0 High-speed controller IC compatible with the widest possible range of media card types in the market. The CM220 is also updateable in the field via a simple host driver update to enable compatibility with future media card types. The CM220 supports high speed USB 2.0 data transfer to and from media cards, but is fully backwards compatible with system configurations supporting USB 1.1 full and low speed operation. 
The CM220 supports 12 different flash media card, 6 mini-size flash media cards and 6 read-only-type flash card specifications, enabling the development of 24-in-1 media card reader devices. The driver software, installed on the host PC, is updateable via Microsoft's Windows Update, which allows easy future proofing of the card reader solution.

True single-chip card reader solution (Patent Pending)
The CM220's patented architecture enables the widest possible compatibility and in-the-field update capability, without the need for external EEPROM or additional components, reducing parts count and costs. The driver software on the host provides all the required programmability. OEMs and component manufacturers need not be concerned about stock issues relating to outdated firmware.
 
Online updateable architecture (Patent Pending)
Due to the rapid changes in media card specifications and the growth in capacities in every format, the future compatibility of media card reader solutions is becoming more important. C-Media's innovative CM220 allows end-users online update their card readers via Windows Automatic Update Function
 
Card Manager Application software (Patent Pending)
The CM220 can be optionally supplied with a special purpose application shell: the C-Media Card Manager. The C-Media Card Manager provides an easy-to-use file management and security function for all media cards. 
Hardware Features
 
l USB 2.0 High-Speed operation, USB1.1 Full/Low-Speed backward compatible
l Compliant with USB Mass Storage Device Class specifications
l Driver updates provided transparently via Microsoft¡¦s Windows Update service
l USB bus power and self power capability 
l Single chip with integrated USB2.0 PHY
l Supports All in-1 card reader systems.
  Flash media card specifications supported:
  -CompactFlash (Ver2.1) / Microdrive
  -Smart Media Card 
  -xD-Picture Card (Ver 1.1, 1.2)
  -MultiMediaCard / MultiMediaCardplus (Ver4.1, 1/4/8 bit mode)
  -SD Card / High Speed SD Card (SD ver 1.1)
  -MemoryStick / High Speed MemoryStick / Memory Stick Pro / High Speed MemoryStick Pro 
  Also support 6 small-size flash cards
  -miniSD / T-Flash Card
  -MemoryStick Duo / MemoryStick-Pro Duo 
  -RS-MMC / MMCmobile (Ver4.1, 1/4/8 bit mode)
  In addition, 6 ROM-Type flash cards are also supported
  -MMC ROM, MMCplus ROM, MMCmobile ROM
  -MemoryStick ROM, MemoryStick Pro ROM
  -SM ROM
l  SPI interface for external MCU
l  EEPROM Serial Interface for customized VID/PID via USB interface
l  Support 1~5 LED displays to indicate operation status
l  "Designed for Windows" logo certified driver with Windows Update option. 
l  USB IF logo qualified
l  xD-Picture certified
l  MS-logo certified
l  CM220L (QFP 100) or CM220F (LQFP 128) are both available 
l  Small footprint for CM220S (LQFP 48) which can be used in notebook or size-sensitive systems
 

 

Software Features

The CM220 also provide a powerful and user-friendly graphic interface, called "Card Manager". This application software provides mulit-window interface for users to easily manage files between flash cards and system disk. Card Manager also provides several valued-added functions such like "security" and "private disk" for users. It makes the traditional card reader a real flash memory management center, not just an input/output device

Card Manager

l File-security Function
l Private-Disk Function
l On-Line Update Hotkey
l Multiple Window