TCAN1057A-Q1: 8Mbps operation

Hirai-san,

This device is capable of transmitting up to that speed if the network conditions are favorable enough.

Atsushi Hirai said:

What is the definition or expectation or example of “simpler networks”?

The conditions that impact the favorability of the network are most largely dependent upon the topology of the network and the length of the stubs/bus. Larger topologies and complex star topologies are more unfavorable to high communication speeds. Stubs and impedance mismatches cause ringing and loopback issues which can ultimately degrade the quality of the dominant-to-recessive signal edge to the point that communication becomes limited to a certain speed. With a smaller bus, the meaning of the statement you quoted is that this transceiver is not usually the limiting factor at least up to 8 Mbps.

We have a good application note, Controller Area Network Physical Layer Requirements (SLLA270), which discusses the different factors that play into making a network simpler or more complex.

Best,

Danny