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Why Two pairs of CAN_H and CAN_L going into One CAN Transciever ?
Attached is CAN Transceiver Datasheet. This IC is wired in our Microcontroller based Electronic Control Unit.
CAN_A_H1 and CAN_A_L1 are connected to CANH and CANL of Transceiver. Also, CAN_A_H2 and CAN_B_H2 are connected to same CANH and CANL ?
TJA1145T_FD-Transceiver.pdf
CAN_A_H1 and CAN_A_L1 are connected to CANH and CANL of Transceiver. Also, CAN_A_H2 and CAN_B_H2 are connected to same CANH and CANL ?
TJA1145T_FD-Transceiver.pdf
ASKER
No, HI, L1, H2, and L2 are not pins on the Microcontroller. These four lines are CAN Bus.
I don't see any HI, L1, H2, L2 in the data sheet. It is a 14-pin chip with one CAN port.
But in general, a pair of wires come into the transceiver from a prior unit, and another pair goes out to the next. A CAN bus is enormous overkill for connecting two devices.
But in general, a pair of wires come into the transceiver from a prior unit, and another pair goes out to the next. A CAN bus is enormous overkill for connecting two devices.
ASKER
Please see attached for CAN Bus Wiring.
CAN-Bus-Wiring.docx
CAN-Bus-Wiring.docx
ASKER CERTIFIED SOLUTION
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If your uC has two CAN ports, you can connect both of them to the bus and use the uC for network tests. If that is not of interest, you can just connect one of the ports.
There seems to be some confusion at the system level.