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TMS320F280049: 两颗DSP通讯--CAN引脚直连

Part Number: TMS320F280049

想请教一下,

两颗DSP的CAN通讯,不要  CAN收发器   的情况下,

能否两颗DSP-CAN引脚直连,实现CAN通讯:

DSP1---------DSP2

CANTx ------CANRx

CANRx ------CANTx

还是说一定需要每颗DSP 的CAN必须要接一个收发器,连接到CAN总线