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本文提出一款面向车载通信网关的处理器，实现33kDMIPS性能、6.4W功耗和40ms CAN总线启动时间。通过并行启动CAN服务、双缓冲解密与数据加载等创新，在保证10Gbps/W网络路由效率的同时将待机功耗降至1.4mW，解决了车辆网关高吞吐、低延迟和低功耗的矛盾。
in the Control domain can start the CAN service in parallel with booting for other (nonCAN) services. Moreover, decryption by a secure CPU and data loading from external memory can be performed in parallel by double buffering. By these two parallel processes, a CAN start-up of 40ms was measured for this work. Kenichi Shimada, Keiichiro Sano, Kazuki Fukuoka, Hiroshi Morita, Masayuki Daito, Tatsuya Kamei, Hiroyuki Hamasaki, Yasuhisa Shimazaki In general, the network protocol and routing processing increase when network bandwidth is expanded. As shown in Fig. 15.3.5, when this processing is performed in CPU, over 2.5W power consumption is simulated based on measurement. As a general approach to reduce power consumption, a network accelerator (NWA) is implemented for off-loading of CPU. The NWA has a capability where it can execute network routing for a low layer such as L2/L3 on the OSI reference model without CPU by using a
Achieving 10Gbps/W Network Routing, 40ms CAN Bus, Start-Up and 1.4mW Standby Power