Document
CY7C68300C/CY7C68301C CY7C68320C/CY7C68321C
EZ-USB AT2LP™ USB 2.0 to ATA/ATAPI Bridge
EZ-USB AT2LP™ USB 2.0 to ATA/ATAPI Bridge
Features
■ Fixed Function Mass Storage Device - Requires no Firmware ■ Two Power Modes: Self Powered and USB Bus Powered to
enable Bus Powered CF (CompactFlash) Readers and Truly Portable USB Hard Drives ■ Certified Compliant for USB 2.0 (TID# 40490119), the USB Mass Storage Class, and the USB Mass Storage Class Bulk-Only Transport (BOT) Specification ■ Operates at High-Speed (480 Mbps) or Full-Speed (12 Mbps) USB ■ Complies with ATA/ATAPI-6 Specification ■ Supports 48-bit Addressing for Large Hard Drives ■ Supports ATA Security Features ■ Supports any ATA Command with the ATACB Function ■ Supports Mode for BIOS Boot Support ■ Supports ATAPI Serial Number VPD Page Retrieval for Digital Rights Management (DRM) Compatibility ■ Supports PIO Modes 0, 3, and 4, Multiword DMA Mode 2, and UDMA Modes 2, 3, and 4 ■ Uses One Small External Serial EEPROM for Storage of USB Descriptors and Device Configuration Data ■ ATA Interface IRQ Signal Support ■ Supports one or two ATA/ATAPI Devices ■ Supports CompactFlash and one ATA/ATAPI Device
■ Supports Board-level Manufacturing Test using the USB I/F ■ Places the ATA Interface in High Impedance (High Z) to enable
Sharing of the ATA Bus with another Controller such as an IEEE-1394 to ATA Bridge Chip or MP3 Decoder) ■ Low Power 3.3 V 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 operating systems
Features (CY7C68320C/CY7C68321C only) ■ Supports HID Interface or Custom GPIOs to enable features
such as Single Button Backup, Power Off, and LED-based Notification ■ 56-pin QFN and 100-pin TQFP Pb-free Packages ■ CY7C68321C is Ideal for Battery Powered Designs ■ CY7C68320C is Ideal for Self and Bus Powered Designs ■ Automotive AEC Grade Option (–40 °C to 85 °C)
Features (CY7C68300C/CY7C68301C only) ■ Pin Compatible with CY7C68300A (using Backward
Compatibility Mode) ■ 56-pin SSOP and 56-pin QFN Pb-free Packages ■ CY7C68301C is Ideal for Battery Powered Designs ■ CY7C68300C is Ideal for Self and Bus Powered Designs
Errata: For information on silicon errata, see “Errata” on page 44. Details include trigger conditions, devices affected, and proposed workaround.
Cypress Semiconductor Corporation • 198 Champion Court Document Number: 001-05809 Rev. *Q
• San Jose, CA 95134-1709 • 408-943-2600
Revised May 2, 2019
CY7C68300C/CY7C68301C CY7C68320C/CY7C68321C
Logic Block Diagram
SCL I2C Bus Master
SDA
Reset
24
MHz
PLL
XTAL
USB
VBUS D+
D-
USB 2.0 Tranceiver
Internal Control Logic
Misc control signals and GPIO ATA 3-state Control
Control
ATA Interface Control Signals
ATA Interface
Logic
CY Smart USB FS/HS Engine
4 kByte FIFO
Data
16 Bit ATA Data
Applications
The CY7C68300C/301C and CY7C68320C/321C implement a USB 2.0 bridge for all ATA/ATAPI-6 compliant mass storage devices, such as the following: ■ Hard Drives ■ CD-ROM, CD-R/W ■ DVD-ROM, DVD-RAM, DVD±R/W ■ MP3 Players ■ Personal Media Players ■ CompactFlash ■ Microdrives ■ Tape Drives ■ Personal Video Recorders ■ Automotive Applications The CY7C68300C/301C and CY7C68320C/321A support one or two devices in the following configurations:
■ ATA/ATAPI master only ■ ATA/ATAPI slave only ■ ATA/ATAPI master and ATA/ATAPI slave ■ CompactFlash only ■ ATA/ATAPI slave and CompactFlash or other removable IDE
master
Additional Resources
■ CY4615B EZ-USB AT2LP Reference Design Kit ■ USB Specification Version 2.0 ■ ATA Specification T13/1410D Revision 3B ■ USB Mass Storage Class Bulk-Only Transport Specification
http://www.usb.org/developers/devclass_docs/usbmassbulk_10.pdf
Document Number: 001-05809 Rev. *Q
Page 2 of 47
CY7C68300C/CY7C68301C CY7C68320C/CY7C68321C
Contents
Introduction ....................................................................... 4 CY7C68300A Compatibility .............................................. 4 Pin Diagrams ..................................................................... 5 Pin Descriptions ............................................................... 9
Additional Pin Descriptions ........................................ 13 HID Functions for Button Controls ............................... 16 Functional Overview ...................................................... 16
USB Signaling Speed ................................................ 16 ATA Interface ............................................................ 16 Operating Modes ............................................................ 19 Operational Mode Selection Flow ............................. 19 Fused Memory Data .................................................. 20 Normal Mass Storage Mode ...................................... 20 Board Manufacturing Test Mode ......