Novel ringing suppression circuit to achieve higher data rates in a linear passive star CAN FD
Novel ringing suppression circuit to achieve higher data rates in a linear passive star CAN FD
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新颖的振铃抑制电路可在线性无源星形 CAN FD 中实现更高的数据速率
DOI：
10.1109/emceurope.2014.6930940
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Syogo Akasaki
中科院分区：
文献类型：
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作者：
H. Mori;N. Maeda;Yasuhiro Mori;H. Obata;Yoshifumi Kaku;Syogo Akasaki
随着汽车中电子控制单元 (ECU) 数量的稳步增加，对实现更高数据速率以及将更多 ECU 连接到控制器局域网 (CAN) 的需求也显着增加。最近，作为一种在不改变现有CAN系统的情况下实现高达10Mbps的更高数据速率的方法，提出了CAN FD（具有灵活数据速率的CAN）。然而，在传统的CAN网络配置下很难建立CAN FD通信，这使得由于比特判决时序的缩短而必须限制网络规模，而振铃收敛时间与传统CAN中相同。在本文中，我们选择了一种典型的网络配置，当数据阶段的数据速率为 2 Mbps 时，线性无源星形中可连接的 ECU 数量少于 4 个 ECU。我们开发了评估板，每个评估板都配备了嵌入我们提出的振铃抑制电路的 CAN 收发器和 CAN FD 控制器。我们将它们应用于 CAN FD，并展示了在连接 8 个 ECU 的传统网络配置下高达 2 Mbps 的更高数据速率的效果。
As the number of electronic control units (ECUs) in an automobile steadily increases, the demand for achieving higher data rates and connecting even more ECUs to the Controller Area Network (CAN) also rises significantly. Recently, as a method to achieve higher data rates up to 10 Mbps without change in the existing CAN system, CAN FD (CAN with Flexible Data-rate) is suggested. However, it is difficult to establish a CAN FD communication under the conventional CAN network configuration which makes it necessary to limit network size because of shortening in the bit decision timing while the ringing convergence time is the same as in conventional CAN. In this paper, we pick up a typical network configuration where the number of ECUs which can be connected in a linear passive star is less than 4 ECUs when the data rate for the data phase is 2 Mbps. We develop evaluation boards each of which is equipped with a CAN transceiver embedding the ringing suppression circuit which we have proposed and a CAN FD controller. We apply them to CAN FD and show an effect on higher data rates up to 2 Mbps under the conventional network configuration connecting 8 ECUs.