28377S 是Dcan，28335是Ecan，请问区别在什么地方，另外有28377，Dcan的例程可以参考吗？

D_CAN比eCAN技术更先进。

例如：

For ECAN it was pretty simple to access CAN registers from the MCU-side: just read/write to the correct register address. However, this technique could be dangerous, if the developer does not care about potential access conflicts between the CAN-Communication Controller and the MCU.

For DCAN, the situation is different. Here, all accesses from MCU to CAN - registers are performed via interface registers IFx. A hardware logic takes care that potential collisions between CAN-CC and the new data/command in IFx are resolved.

当然，还有其他的区别，具体可以看一下F2837X的CAN说明文档。