Datasheet

SATA

Gen1/2

TUSB9260

HDD

USB 3.0

SuperSpeed

(1)

USB 2.0

High-speed

(1)

with

USB 3.0

Support

(1) USB connection is made at either SuperSpeed or High-Speed depending on the upstream connection support.

TUSB9261

www.ti.com

SLLSE67F –MARCH 2011–REVISED JULY 2013

3 INTRODUCTION

3.1 System Overview

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 bulk-only transport (BOT), and USB human

interface device (HID) interfaces.

3.2 Device Block Diagram

The major functional blocks are as follows:

• Cortex M3 microcontroller subsystem including the following peripherals:

– Time interrupt modules, including watchdog timer

– Universal asynchronous receive/transmit (SCI)

– Serial peripheral interface (SPI)

– General purpose input/output (GPIO)

– PWM for support of PWM outputs (PWM)

• USB 3.0 Core (endpoint controller) and integrated USB 3.0 PHY

• AHCI compliant SATA controller and integrated SATA PHY

– Supporting gen1i, gen1m, gen2i, and gen2m

• Chip level clock generation and distribution

• Support for JTAG 1149.1 and 1149.6

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Product Folder Links: TUSB9261