Novel receiver circuit to achieve higher data rates in a linear passive star CAN

As the number of electronic control units (ECUs) in an automobile steadily increases, the demand for the achieving higher data rates, and ever more ECUs connected to the Controller Area Network (CAN) also rises significantly. However, the quantity of communication data and the number of connectable ECUs in CAN are restricted because of shortening in the bit decision timing and increasing waveform ringing. In this paper, we propose a receiver circuit which does not depend on waveform ringing. Then we show an effect on higher data rates up to 1 Mbps under the conventional network size, and the number of connected ECUs using a prototype circuit.