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| Preliminary Information DCAN250 - CAN over Battery Power Line Communication Description The DCAN250 is a VLSI device for Multiplex CAN bus communication over battery Power Lines (PLC). It is a complete transceiver solution for CAN bus alternative physical layer between for a wide range of vehicular modules such as the steering wheel, doors, sensors, displays, Internet/navigation computer, security, control panel, etc. The device operates as a smart DC - PLC transceiver for CAN bus controllers. The DCAN250 contains a modem, a channel coder/decoder (ECC), a communication controller, and a message-buffered host interface to overcome the hostile environment of vehicle battery lines. A Sleep Mode reduces the power consumption when no bus communication exists. The DCAN250 is based on the DC-BUS technology, that reduces harness weight whilst enabling flexible, quick and simple installation. Applications * * * * * * * Vehicle electronics Car audio control Vehicle data surveillance Mobile computing Mobile phone interface Security systems Internal communication Features * Noise robust up to 250Kbps communication over a battery power line. * Reduces harness weight, eliminates complex cables and installation. * Flexible installation operates over 12V to 42V battery lines. * Receives and transmits CAN bus protocol. * Peer to Peer, up to 16 devices, multi-user packet communication. * Opens new dimensions for car electronics design. * Sleep Mode for low power consumption. CAN bus Controller CAN bus Controller CAN bus Controller DCAN250 DCAN250 DCAN250 Battery Power Line Figure 1 - Typical DCAN250 System Characteristics Packet data: Modulation method: Collision resolution: Error correction codes: Power save mode: Packet size: Interface: 250Kbps DQPSK Built in Built in Built in User defined CAN DC LINE HOST Interface XO XI RESET SLEEP DC LINE Rx DC LINE Tx Passive Filter @ 2007 YAMAR Electronics Ltd. 17 Shimon Hatarsi St. Tel Aviv, 62492 Israel Tel: 972-3-5445294 Fax: 972-3-5445279 Email: marketing@yamar.com Web: www.yamar.com PODCAN250 Rev1.0 |
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