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CY7C68300C, CY7C68301C
CY7C68320C, CY7C68321C
Document 001-05809 Rev. *C
Page 2 of 41
Applications
The CY7C68300C/301C and CY7C68320C/321A 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
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
■ CY4615C EZ-USB AT2LP Reference Design Kit
■ USB Specification version 2.0
■ ATA Specification T13/1410D Rev 3B
■ USB Mass Storage Class Bulk Only Transport Specification
http://www.usb.org/devel-
opers/devclass_docs/usbmassbulk_10.pdf
USB 2.0
Tranceiver
CY Smart USB
FS/HS Engine
4 kByte FIFO
PLL
I
2C Bus Master
ATA
Interface
Logic
Data
Control
24
MHz
XTAL
16 Bit ATA Data
USB
D+
D-
Internal Control Logic
VBUS
ATA Interface
Control Signals
Misc control signals and GPIO
SDA
SCL
ATA 3-state Control
Logic Block Diagram
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