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CAN Physical Layer - 4 |
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Connectors and Wires ISO-11898-2 does not specify the mechanical wires and connectors. However, the specification does require that the wires and connectors meet the electrical specification. The specification also requires 120Ω (nominal) terminating resistors at each end of the bus. Robustness The ISO11898-2 specification requires that a compliant or compatible transceiver must meet a number of electrical specifications. Some of these specifications are intended to ensure the transceiver can survive harsh electrical conditions, thereby protecting the communications of the CAN node. The transceiver must survive short circuits on the CAN bus inputs from -3V to +32V and transient voltages from -150V to +100V. Table 1 shows the major ISO11898-2 electrical requirements, as well as MCP2551 specifications.
Table: major ISO11898-2 electrical requirements |
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