User`s manual

34 Functional Description

3.4 Board Interfaces on RTM

USB Interfaces

There are two identical USB interfaces on the cPCI-R3920T RTM,

each with a maximum transfer rate of 480 Mb/s provided for con-

necting USB devices. One USB peripheral may be connected to

each port. To connect more USB devices than there are available

ports, an external hub is required.

USB Connectors CN7-R and CN8-R

Table 3-8: RTM USB Connector Pin Definitions

Dual Gigabit Ethernet

The CT-30 board provides two 10Base-T/100Base-TX/1000Base-T

Ethernet ports via the cPCI-R3920T RTM, based on the Dual

Gigabit Ethernet controller, which is connected to the x4 PCI

Express interface of the Intel® 3100.

The Intel® 82571EB Dual Gigabit Ethernet Controller’s architec-

ture is optimized to deliver high performance with the lowest

power consumption. The controller’s architecture includes inde-

pendent transmit and receive queues and a PCI Express interface

that maximizes the use of bursts for efficient bus usage.

The Boot from LAN feature is supported.

Pin # Signal Name

1Vcc

2UV0-

3UV0+

4GND

NOTE:

The RTM supports the USB 1.1 and USB 2.0 standards. For

USB 2.0 it is strongly recommended to use a cable length not

exceeding 3 meters.

NOTE:

The Ethernet transmission can operate effectively using a

CAT5 cable or higher specifications.