EZ-USB AT2LP(TM) USB 2.0 to ATA/ATAPI Bridge
Features
*Fixed-function mass storage device-requires no firmware code
*Two power modes: Self-powered and USB bus-powered to enable bus powered CF readers and truly portable USB hard drives
*Certified compliant for USB 2.0 (TID# 40460273), the USB Mass Storage Class, and the USB Mass Storage Class Bulk-Only Transport (BOT) Specification
*Operates at high (480-Mbps) or full (12-Mbps) speed USB
*Complies with ATA/ATAPI-6 specification
*Supports 48-bit addressing for large hard drives
*Supports ATA security features
*Supports all ATA commands via ATACB function
*Supports mode page 5 for BIOS boot support
*Supports ATAPI serial number VPD page retrieval for Digital Rights Management (DRM) compatibility
*Supports PIO modes 0, 3, 4, multiword DMA mode 2, and UDMA modes 2, 3, 4
*Uses one external serial EEPROM for storage of USB descriptors and device configuration data
*ATA interface IRQ signal support
*Support for one or two ATA/ATAPI devices
*Support for CompactFlash and one ATA/ATAPI device
*Can place the ATA interface in high-impedance (Hi-Z) to allow sharing of the ATA bus with another controller (e.g., an IEEE-1394 to ATA bridge chip or MP3 Decoder)
*Support for board-level manufacturing test via USB interface
*Low-power 3.3V operation
*Fully compatible with native USB mass storage class drivers
*Cypress mass storage class drivers available for Windows
(98SE, ME, 2000, XP) and Mac OS X
Functional Description
The EZ-USB AT2L(TM) CY7C68300B/CY7C68301B and CY7C68320/CY7C68321) implements a fixed function bridge between one USB port and one or two ATA- or ATAPI-based mass storage device ports. This bridge adheres to the Mass Storage Class Bulk-Only Transport Specification and is intended for bus- and self-powered devices. |
