TUSB9260

SLLS962A – DECEMBER 2009 – REVISED JULY 2010

www.ti.com

4.2

Firmware Support

Default firmware support is provided for the following:

•

USB 3.0 SuperSpeed and USB 2.0 High-Speed and Full-Speed

•

USB Attached SCSI Protocol (UASP)

•

USB Mass Storage Class (MSC) Bulk-Only Transport (BOT)

–

Including the 13 Error Cases

•

USB Mass Storage Specification for Bootability

•

USB Device Class Definition for Human Interface Devices (HID)

–

Firmware Update and Custom Functionality (e.g. One-Touch Backup)

•

Serial ATA Advanced Host Controller Interface (AHCI)

•

General Purpose Input/Output (GPIO)

–

LED Control and Custom Functions (e.g. One-Touch Backup Control)

•

Pulse Width Modulation (PWM)

–

LED Dimming Control

•

Serial Peripheral Interface (SPI)

–

Firmware storage and storing Custom Device Descriptors

•

Serial Communications Interface (SCI)

–

Debug Output Only

4.3

GPIO/PWM LED Designations

The default firmware provided by TI drives the GPIO and PWM outputs as listed in the table below.

Table 4-1. GPIO/PWM LED Designations

GPIO0

SW heartbeat

00: U3 state or default

01: U2 state

GPIO1/GPIO5

USB3 power state (U0-U3)

10: U1 state

11: U0 state

GPIO2

HS/FS suspend

GPIO3

Push button input on customer board

GPIO4

Not used

GPIO6

FS/HS connected

GPIO7

SS connected

PWM0

Disk activity

PWM1

U3 or HS/FS suspend state (fades high and low)

GPIO10

Not used

(SPICS1)

GPIO11

Not used

(SPICS2)

The LED’s on the TUSB9260 Product Development Kit (PDK) board are connected as in the table above.

Please see the TUSB9260 PDK Guide (SLLA303) for more information on GPIO LED connection and

usage. This EVM is available for purchase, contact TI for ordering information.

10

OPERATION

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Product Folder Link(s): TUSB9260