Eurotech Appliances VIPER / VIPER-LITE PXA255 - Manual (Page 16)

VIPER Technical Manual Getting started
© 2007 Eurotech Ltd Issue E 16
Using the audio features
There are four audio interfaces supported on the VIPER: amp out, line out, line in and
microphone. The line in, line out and amp interfaces support stereo signals and the
microphone provides a mono input. The amplified output is suitable for driving an 8
Ω
load with a maximum power output of 250mW per channel. Connections are routed to
PL6 - see the sections
39H
Audio (page
247H
56 ) and
40H
PL6 – Audio connector (page
248H
91 ) for
further details.
Using the USB host
The standard USB connector is a 4-way socket, which provides power and data
signals to the USB peripheral. The 10-way header PL7 has been designed to be
compatible with PC expansion brackets that support two USB sockets. See the
sections
249H
USB host interface (page
250H
60 ) and
251H
PL7 – USB connector (page
252H
91 ) for further
details.
Using the USB client
The VIPER board can be used as USB client and connected to a PC via a USB cable.
The USB cable should be plugged into PL17 header. See the sections
253H
USB client
interface (page
254H
61
) and
255H
PL17 – USB client connector (page
256H
95
) for further details.
Using the Ethernet interface
The SMSC LAN91C111 10/100BaseTX Ethernet controller is configured by the
RedBoot bootloader for embedded Linux or VxWorks, and by Eboot for Windows CE.
Connection is made via connector PL1. A second connector PL2 provides activity and
link status outputs for control LEDs. See the sections
257H
10/100BaseTX Ethernet (page
258H
62 ),
259H
PL1 – 10/100BaseTX Ethernet connector (page
260H
87 ) and
261H
PL2 – Ethernet status
LEDs connector (page
262H
87 ) for further details.
The Ethernet port may be connected to an ETHER-BREAKOUT module to provide a
standard RJ45 port connector, see section
263H
Ethernet breakout board , page
264H
62
for
further details.
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