Can't TJA1145 do CAN Read/Write without SPI communication?

[songinseok]

Hi, 

I am going to do CAN communication using TJA1145 for this project.

I understood from the datasheet that TJA1145 enters STANDBY mode when powered on, and Tx/Rx does not work at this time.

At this time, I understood that in order to enter the mode where CAN communication is possible, the MC value must be set through SPI communication.

That said, CAN Tx/Rx via the TJA1145 seems impossible without SPI communication.

If possible, I would like to implement a circuit that enables CAN communication using TJA1145 without SPI communication.

Can't TJA1145 do CAN Read/Write without SPI communication?

Best regards,

Inseok

[TomasVaverka · Accepted solution]

Hi Inseok,

Your understanding is correct, the Normal mode can be selected from Standby or Sleep mode via an SPI command only, so the SPI communication is mandatory.

Best regards,

Tomas