1 Features
1• Universal Serial Bus (USB)
– SuperSpeed USB 3.0 Compliant – TID
340730020
– Integrated Transceiver Supports SS/HS/FS
Signaling
– Best-in-Class Adaptive Equalizer
– Allows for Greater Jitter Tolerance in the
Receiver
– USB Class Support
– USB Attached SCSI Protocol (UASP)
– USB Mass Storage Class Bulk-Only
Transport (BOT)
– Support for Error Conditions Per the 13
Cases (Defined in the BOT Specification)
– USB Bootability Support
– USB Human Interface Device (HID)
– Supports Firmware Update Via USB, Using a
TI Provided Application
• SATA Interface
– Serial ATA Specification Revision 2.6
– Gen1i, Gen1m, Gen2i, and Gen2m
– Support for Mass-Storage Devices Compatible
With the ATA/ATAPI-8 Specification
• Integrated ARM Cortex M3 Core
– Customizable Application Code Loaded from
EEPROM by SPI Interface
– Two Additional SPI Port Chip Selects for
Peripheral Connection
– Up to 12 GPIOs for End-User Configuration
– Two GPIOs have PWM Functionality for
LED Blink Speed Control
– Serial Communications Interface for Debug
(UART)
• General Features
– Integrated Spread Spectrum Clock Generation
Enables Operation from a Single Low-Cost
Crystal or Clock Oscillator
– Supports 40 MHz
– A JTAG Interface is Used for IEEE1149.1 and
IEEE1149.6 Boundary Scan
– Available in a Fully RoHS-Compliant Package

2 Applications
• External HDD/SSD
• External DVD
• External CD
• HDD-Based Portable Media Player

3 Description
The TUSB9261 is an ARM® Cortex® M3
microcontroller based USB 3.0 to serial ATA bridge. It
provides the necessary hardware and firmware to
implement a USB attached SCSI protocol (UASP)-
compliant mass storage device suitable for bridging
hard disk drives (HDD), solid state disk drives (SSD),
optical drives, and other compatible SATA 1.5-Gbps
or SATA 3.0-Gbps devices to a USB 3.0 bus. In
addition to UASP support, the firmware implements
the mass storage class BOT and USB HID interfaces.