Technical information

Technical Information • SCS-TRUMPET • CPU Expansion Side Card

USB 3.0

The SCS-TRUMPET is equipped with a dual front panel receptacle, which can accommodate two USB

3.0 or USB 2.0 type A cable connectors (USB root hub). When connected to USB 2.0 compliant

devices, only the classic 4 contacts (data pair, +5V and GND) are in use. USB 3.0 devices in addition

communicate via the SuperSpeed differential transmit and receive signal pairs, available across

another 5 contact pins.

The front panel USB jacks are tied to an on-board PCI Express® to USB 3.0 controller (TUSB7320 or

TUSB7340). For older operating systems e.g. Windows® 7, installation of a xHCI driver would be

required to enable the SuperSpeed mode (download via www.ti.com).

USB • Dual USB 3.0 Receptacle

USB 3.0 dual type A receptacle, stacked, 18-position (270.23.18.2)

BUS

+5V 1.5Amax

2USB D-

3USB D+

4GND

5SS RX-

6 SS RX+

7GND

8 SS TX-

9SS TX+

Each connector provides +5V (V

BUS

) for powering external devices. A dual-channel electronic power

switch (TPS2060) is used on the SCS-TRUMPET which limits the maximum output current of each

individual USB connector to a safe level. The USB power switch is rated at >2A current limit typically,

which is suitable even for applications where heavy capacitive loads are likely to be encountered, e.g.

BUS

powered USB disk drives. The electronic switch is enabled by the on-board USB controller (i.e. it

is managed by the driver software). Front panel LEDs labelled 1 and 2 signal the power-on state

individually for each USB receptacle.

USB 3.0

270.23.18.23.0