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RouterBOARD Crossroads
User's Manual
Rev. B (2-Aug-2007)

Copyright

Copyright © 2003-2007 MikroTikls SIA. This manual contains information protected by copyright law. No
part of it may be reproduced or transmitted in any form without prior written permission from the copyright
holder.

Trademarks

RouterBOARD, RouterOS, RouterBOOT and MikroTik are trademarks of MikroTikls SIA. All trademarks and
registered trademarks appearing in this manual are the property of their respective holders.

Limited Warranty

Hardware. MikroTikls SIA warrants all RouterBOARD Crossroads series equipment for the term of one year
from the shipping date to be free of defects in materials and workmanship under normal use and service. All
parts will be repaired or replaced with similar or functionally equivalent parts by MikroTikls SIA during the
warranty term, except in case the returned parts have mechanical, electrical or other accidental or intended
damages caused by improper use or due to wind, rain, fire or other acts of nature.
Parts (or systems) must be shipped pre-paid to our facility in Riga, Latvia. All items must have a Return
Material Authorization (RMA) which you can get by contacting us via email, telephone or fax. The RMA form
must be printed, signed, and enclosed with the shipment, also the RMA number must be written on the
package itself. Parts sent without following the proper procedure will be treated as those not to be repaired
or replaced due to the above mentioned conditions. Items proved to be free of defects in our lab will be
returned to the customer at the customer's expense. Those that do meet the warranty repair requirements
will be repaired or replaced, and returned to the customer's location at our expense, extending the warranty
term for the time the items are being shipped to and from our facility and replaced or repaired.
Manual. This manual is provided "as is" without a warranty of any kind, expressed or implied, including, but
not limited to, the implied warranty of merchantability and fitness for a particular purpose. The
manufacturer has made every effort to ensure the accuracy of the contents of this manual, however, it is
possible that it may contain technical inaccuracies, typographical or other errors. No liability is assumed for
any inaccuracy found in this publication, nor for direct or indirect, incidental, consequential or other
damages that may result from such an inaccuracy, including, but not limited to, loss of data or profits.
Please report any inaccuracies found to docs@mikrotik.com.

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Summary of Contents for MikroTik RouterBOARD Crossroads

  • Page 1: Copyright

    Limited Warranty Hardware. MikroTikls SIA warrants all RouterBOARD Crossroads series equipment for the term of one year from the shipping date to be free of defects in materials and workmanship under normal use and service. All...
  • Page 2: Table Of Contents

    RouterBOARD Crossroads User's Manual Table of Contents Copyright............................1 Trademarks............................ 1 Limited Warranty..........................1 System Board View......................... 3 System Board Layout........................3 Block Diagram..........................3 Specifications..........................4 Hardware Guide..........................5 Memory and Storage Devices....................5 Onboard Memory......................5 Onboard NAND Storage Device..................
  • Page 3: System Board View

    RouterBOARD Crossroads User's Manual System Board View System Board Layout Block Diagram Power 11..60V DC power jack Supply 12/48V PoE Onboard RAM 100BaseTX Onboard Flash (NAND) (with PoE in) Serial port WLAN LEDs GPIO WLAN Antenna Connectors...
  • Page 4: Specifications

    RouterBOARD Crossroads User's Manual Specifications RouterBOARD Crossroads MIPS32 4KEc based 184MHz embedded processor Memory 32MB SDRAM onboard memory chip Boot loader RouterBOOT, 1Mbit Flash chip Data storage 64MB onboard NAND memory chip Ethernet One 10/100 Mbit/s Fast Ethernet port supporting Auto-MDI/X IEEE802.11b (1..11Mbit/s, auto-fallback);...
  • Page 5: Hardware Guide

    RouterBOARD Crossroads User's Manual Hardware Guide Memory and Storage Devices Onboard Memory The boards are equipped with one 32MB SDRAM memory chip. Onboard NAND Storage Device The boards are equipped with one 64MB NAND nonvolatile memory chip. Input/Output Ports LAN Port with PoE This Fast Ethernet port is compatible with IEEE802.3af Power over Ethernet standard (includes power over...
  • Page 6: Powering

    12V DC non-standard PoE powering support (JP2 PoE control should be closed) RouterBOARD Crossroads is equipped with a reliable 10W onboard power supply that accepts a wide range of input voltages. The board has a direct-input power jack J7 (5.5mm outside and 2mm inside diameter, female, pin positive plug) and can as well be powered with PoE.
  • Page 7: Mikrotik Routeros

    Ethernet. Crossroads has one onboard Ethernet ports controlled by Atheros AR2316 embedded Fast Ethernet controller. MikroTik RouterOS MikroTik RouterOS, starting from version 2.9.38 (RouterBOARD 100/500 edition) Crossroads series embedded boards. RouterBOOT The RouterBOOT firmware (also referred as “boot loader” here) provides minimal functionality to boot an Operating System.
  • Page 8: Boot Loader Upgrading

    Note that the upgrade may only take place within the same broadcast domain (i.e. there must not be any routers between the Windows-based machine and the upgradable RouterBOARD). The boot loader upgrading is supported also from MikroTik RouterOS. The procedure is described in the MikroTik RouterOS manual.
  • Page 9: Appendix

    RouterBOARD Crossroads User's Manual Appendix Connector Index RS232C male DB9 serial port 2 RxD (Receive Data) 3 TxD (Transmit Data) 4 DTR (Data Terminal Ready) 5 GND 7 RTS (Request To Send) Auxillary antenna connector Main antenna connector Power jack (11..60 V DC, positive contact is the central pin)
  • Page 10: Jumper Index

    RouterBOARD Crossroads User's Manual Jumper Index IEEE802.3af Power over Ethernet standard operation. The controller is only stable starting from 22-24V DC power input, so when powering from lower voltages, it should be disabled. Note that the controller is active for both PoE and J7 power jack, so even when not using PoE, disable the controller for lower voltages.
  • Page 11: Fcc Notice (Fcc Id: Tv7-Crd)

    RouterBOARD Crossroads User's Manual FCC Notice (FCC ID: TV7-CRD) This device uses, generates, and radiates radio frequency energy. The radio frequency energy produced by this device is well below the maximum exposure allowed by the Federal Communications Commission (FCC). Operation is subject to the following conditions: 1.

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