Contents
 EZ-USB AT2LP USB 2.0 to ATA/ATAPI Bridge
Features
Block Diagram
CY7C68300C/CY7C68301C CY7C68320C/CY7C68321C
 CY4615C EZ-USB AT2LP Reference Design Kit USB Specification version
Applications
CY7C68300A Compatibility
Introduction
 56-pin SSOP
EZ-USB AT2LP
CY7C68300C
CY7C68301C
 DD13
EZ-USB AT2LP CY7C68300C CY7C68301C 56-pin QFN
ENABLE
RESET#
 56-pin SSOP
EZ-USB AT2LP
CY7C68320C
CY7C68321C
 DD15
EZ-USB AT2LP CY7C68320C CY7C68321C 56-pin QFN
ARESET#
GPIO2
 CY7C68321A
100-pin TQFP
CY7C68320A
 PU 10K
USB D+ signal See “DPLUS, DMINUS” on page
USB   D-signal   See  “DPLUS, DMINUS” on page
page
 CY7C68320C/CY7C68321C
CY7C68300C/CY7C68301C
 VBUS detection See “VBUSATAENABLE” on
Chip reset See “RESET#” on page
 XTALIN, XTALOUT
“ATAPUEN” on page
DPLUS, DMINUS
SCL, SDA
 USB  High-Speed
SYSIRQ
 LOWPWR#
GPIO Pins
ATA Interface Pins
DRVPWRVLD
 PWR500#
VBUSATAENABLE
RESET#
ATAPUEN
 ATA Command Block ATACB
HID Functions for Button Controls
Functional Overview
 Field Description
Table 6. ATACB Field Descriptions
Byte
Field Name
 5-12
 Figure 10. Operational Mode Selection Flow
Operating Modes
Operational Mode Selection Flow
 Normal Mass Storage Mode
Bulk-Only Transport Specification . There is a vendor-specific
Table 7. Command Block Wrapper
Fused Memory Data
 MfgCB
 Figure 11. Snapshot of ‘AT2LP Blaster’ Utility
EEPROM Organization
 length. This allows the CY7C68300C/CY7C68301C to work
Enable a delay of up to 120 ms at each read of the DRQ bit
where the device data length does not match the host data
“Functional Overview” on page 15  for more detail on how
 Determines if the AT2LP is to do an SRST reset during drive
 returned on bits 2, 1, and 0 of EP1IN. This bit must be set to
 CY7C68300C/CY7C68301C CY7C68320C/CY7C68321C
 does not exist. The USB Mass Storage Class Bulk-Only
Configuration
 USB Bulk In Endpoint
Interface Descriptor
USB Bulk Out Endpoint
 Terminator
 Page 29 of
Number of the channel, must be a zero based value that is
 Descriptor-Index 0 LANGID
 CY7C68300C/CY7C68301C CY7C68320C/CY7C68321C
 unique serial
Descriptor-Serial Number
 LOADCONFIGDATA
 bmRequestType
Table 12.EEPROM-related Vendor-specific Commands
READCONFIGDATA
Label
 Operating Conditions
DC Characteristics
Absolute Maximum Ratings
 USB Transceiver Characteristics
AC Electrical Characteristics
Ordering Information
ATA Timing Characteristics
 Figure 12. 100-Pin Thin Plastic Quad Flatpack 14 x 20 x 1.4 mm A101
Package Diagrams
 Figure 13. 56-lead Shrunk Small Outline Package
Package Diagrams continued
 Page 39 of
General PCB Layout Recommendations For USB Mass Storage Designs
Figure 14. 56-Lead QFN 8 x 8 mm LF56A
 PCB Material
Quad Flat Package No Leads QFN Package Design Notes
Other Design Considerations
 Devices With Small Buffers
Disclaimers, Trademarks, and Copyrights
IDE Removable Media Devices
 ECN NO
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Issue Date
Document Number