Information

108 | Signal Chain Guide 2013 Texas Instruments
Interface
Consumer/Computing – USB
Get more information: www.ti.com/product/TUSB9261
Get more information: www.ti.com/product/TUSB7320, www.ti.com/product/TUSB7340
SuperSpeed USB-to-SATA bridge
TUSB9261
SuperSpeed USB Host Controllers
TUSB7320/40
The TUSB9261 is a SuperSpeed USB function controller with integrated USB-compliant
transceivers. It is intended as a USB-to-SATA bridge for storage devices using the SATA
interface. The TUSB9261 is designed to use both the fast performance of the state
machine and the programmability and flexibility of the embedded microcontroller (MCU)
and firmware. With the elaborate balance between the MCU and the state machine,
it provides a bridge solution to meet both performance and flexibility requirements of
next-generation external storage devices.
The TUSB7320/40 are USB 3.0 xHCI-compliant host controllers that support up to four
downstream ports. Both parts are available in a pin-compatible 100-pin RKM package.
The TUSB7320/40 interface to the host system via a PCIe x1 Gen 2 interface and
provide SuperSpeed, high-speed, full-speed or low-speed connections on the down
-
stream USB ports.
TUSB7320/40 functional block diagram
Key Features
• Interfacesupportsinteroperabilitywith
all host platforms and the latest high-
performance storage drives to enable
ultra-fast, sync-and-go user experience
SATA revision 2.6-compliant
USB 2.0 HS/FS and USB 3.0 SS
Attached SCSI protocol
Mass storage class bulk-only
transport
HID class
Firmware update support
• Receiversensitivityoflessthan50mV
differential peak-to-peak is twice as
good as required by the specification,
allowing for simpler board layout and
longer cable usage to ensure broader
compatibility
Key Features
• USB3.0-compliantxHCIhost 
controller
• Downstreamportssupport 
SuperSpeed, high-speed,
full-speed/low-speed connections
•
Eachdownstreamport
May be independently enabled or
disabled
Has adjustments for transmit swing,
de-emphasis and equalization
settings
May be marked as removable/
non-removable
Has independent power control and
overcurrent detection
• Best-in-classadaptivereceiver 
equalizer design
TUSB9261 functional block diagram
USB Port
HS/FS Signals
(480Mbps)
SS Signals
(5Gbps)
USB 2
PHY
USB SS
PHY
ARM
®
Cortex
®
-M3
Memory
Subsytem
SATA Port
(1.5 or 3.0 Gbps)
USB Controller Interface
SATA II
PHY
SATA II Controller
Applications
• Externalstorage:
SSDs
HDDs
Optical drives
SS USB Device
or
HS/FS/LS USB
Device
SS USB Device
or
HS/FS/LS USB
Device
SS USB Device
or
HS/FS/LS USB
Device
SS USB Device
or
HS/FS/LS USB
Device
PC
TUSB7340
PCIe
To
USB 3.0
Host Controller
Applications
• PCIehostadd-incards
• DesktopPCs
• NotebookPCs