Belkin XM Commander Especificações descarregar pdf (Página 24)

REF: BB_SRM_xM BeagleBoard-xM System

Reference Manual

Revision A2

Page 24 of 164

so a hub must be powered. The 100mA is not impacted by having a higher amperage

supply plugged into the DC power jack. The 100mA is a function of the OTG port itself.

Make sure the DC supply is regulated and a clean supply. If the power is over the voltage

specification, a RED LED will turn on. This will prevent the power form actually making

it to the circuitry on the board and will stay on as long as the power exceeds the voltage

specification.

5.17 JTAG Connector

A 14 pin JTAG header is provided on the BeagleBoard to facilitate the SW development

and debugging of the board by using various JTAG emulators. The interface is at 1.8V on

all signals. Only 1.8V Levels are supported. DO NOT expose the JTAG header to

3.3V.

5.18 RS232 DB9 Connector

Support for RS232 via UART3 is provided by DB9 connector on the BeagleBoard for

access to an onboard RS232 transceiver. A USB to Serial cable can be plugged directly

into the Beagle. No null modem cable is required. A standard male to female straight

DB9 cable may also be used.

5.19 Main Expansion Header

A single 28 pin header is provided on the board to allow for the connection of various

expansion cards that could be developed by the users or other sources. Due to

multiplexing, different signals can be provided on each pin. This header is populated on

each board.

5.20 Camera Connector

A single connector has been added to the BeagleBoard–xM board for the purpose of

supporting a camera module. The camera module does not come with the board but can

be obtained from Leopard Imaging. The supported resolutions include VGA, 2MP, 3MP,

and 5MP camera modules. For proper operation of the cameras, the correct SW drivers

are required. This connector is populated on the board and is ready for the camer module

to ne installed.

5.21 MMC3 Expansion Header

New to the BeagleBoard-xM is a 20 pin connector provided to allow access to additional

signals including GPIO and the MMC3 port. This connector is populated on the board.

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Belkin XM Commander Especificações Página 24