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Interfaces and Connectors

Revised July 2011 Trim-Slice 12

3.4.2 S/PDIF

The S/PDIF output is implemented with the Tegra2 S/PDIF interface. The S/PDIF output signal is

routed to audio jack P5.

3.5 USB Subsystem

3.5.1 USB Hub

The Trim-Slice features four external USB ports that are implemented with the SMSC USB2514 hub.

The USB hub is interfaced with the Tegra2 USB-3 port. USB hub down-stream ports are routed to the

USB connectors P6, P8, P9 and P11.

For additional details, please refer to the USB2514 datasheet, available from http://www.smsc.com/.

3.5.2 USB-1

The Tegra2 USB-1 port is routed to a USB selector that allows utilizing the port for two separate,

mutually exclusive functions:

 On-board USB2-to-SATA controller that implements the Trim-Slice SATA storage interface.

For additional details, please refer to section 3.7 of this document.

 USB device port. For additional details, please refer to section 5.10 of this document.

The USB selector path is controlled with the Tegra2 GPIO_PV2 signal.

3.5.3 USB-2

The Tegra2 USB-2 port is utilized for internal Trim-Slice mother-board functionality and is not

available for external use. The port is implemented with an on-board SMSC USB3320 phy. The USB

signals are routed to connector P38.

3.6 Gigabit Ethernet

The Trim-Slice Gigabit Ethernet interface is implemented with the RTL8111D Realtek Gigabit

Ethernet controller. The controller is connected to the PCIe-0 interface of the Tegra2 SoC. The

interface supports the following main features:

 Full compliance with IEEE 802.3 standard

 Crossover Detection and Auto-Correction

 Auto-negotiation

 Activity and speed indicator LED controls

Gigabit Ethernet signals are routed to the RJ-45 connector P7.

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CompuLab Trim-Slice Manuale Utente Pagina 12