The QDCAN10 is a low speed power-line communication "transceiver" that interface with a CAN-bus ECU using the DC-BUS modem technology for multiplex communication over a DC power-line, saving wires weight and cost of vehicle harness. The semiconductor device is designed for multi-point CAN-bus network communication of Mechatronics vehicle applications such as automotive steering-wheel, doors, sensor, actuator etc. withstanding the the severe battery power-line channel characteristics.
The CMOS low power transceiver receives and transmits data messages according to the CAN-bus protocol between variety of sensors and actuators in a vehicle. The devices provide an alternative "transceiver" physical layer to enable system designers with the flexibility to use a communication link over the power-lines or a single wire using CAN-bus ECU.
The QDCAN10 devices can be used for sensor / actuator applications such as temperature control, door ECU, pressure sensor, combining power and data over the same cable, withstanding the hostile DC power-line communication channel conditions.
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The system serves up to 16 CAN-bus ECUs, each of them can broadcast data messages to other devices on the bus using messages created by CAN-bus ECU. The QDCAN10 uses a Carrier Sense Multiple Access (CSMA) Collision Resolution mechanism for arbitration over the DC power-line according to the CAN message identifier.
The QDCAN10 devices receive their CAN-bus messages from the CAN ECU. The device protect the message with a forward error correction code. modulate the power-line with a relatively low level signal to eliminate EMC radiation. Its operation looks to the ECU as a physical layer although it has built-in Modem, Channel coder, Carrier sense, Collision Resolution building blocks.
