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 • • • • • • • Features Vehicle electronics Car audio control Vehicle data surveillance Mobile computing Mobile phone interface Security systems Internal communication • 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 @ 2007 YAMAR Electronics Ltd. 17 Shimon Hatarsi St. Tel Aviv, 62492 Israel Tel: 972-3-5445294 Fax: 972-3-5445279 Email: [email protected] Web: www.yamar.com DC LINE HOST Interface XO XI DC LINE Rx DC LINE Tx Passive Filter RESET SLEEP PODCAN250 Rev1.0