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.

Features
◇ USB 2.0 High-Speed operation, USB1.1 Full/Low-Speed backward compatible
◇ Compliant with USB Mass Storage Device Class specifications
◇ Driver updates provided transparently via Microsoft’s Windows Update service
◇ USB bus power and self power capability
◇ Single chip with integrated USB2.0 PHY
◇ Supports 24in-1 (12 specs + 6 small-size + 6 ROM-Type) 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
        ‐ SD ROM
◇ SPI interface for external MCU
◇ EEPROM Serial Interface for customized VID/PID via USB interface
◇ Support 1~5 LED displays to indicate operation status
◇ “Designed for Windows” logo certified driver with Windows Update option.
◇ USB IF logo qualified
◇ xD-Picture certified
◇ MS-logo certified
◇ CM220L (QFP 100) or CM220F (LQFP 128) are both available
◇ Small footprint for CM220S (LQFP 48) which can be used in notebook or size-sensitive systems