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SN65HVD230芯片既可以接收到CAN总线的数据也可以往CAN总线上发送数据,在这两者过程中 1脚D 4脚R 7脚CANH 6脚CANL这四个角是怎么样配合使用的实现数据传输?
D是driver即发送端的输入控制端,当D为低电平,Rs<1.2V 时,CAN总线有效,CAN总线上有数据发送,当D为高电平时,输出为高阻抗。当接收数据时,R为输出端,要看Vid的电平范围,得到输出R为高或低,你可以阅读datasheet中的driver和receiver的真值表,相信对你的理解有所帮助http://www.ti.com/lit/ds/symlink/sn65hvd230.pdf