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UJA1169TK/X SBC wakeup by CAN and WAKE pin

Question asked by Siva Sankar Chandika on Sep 19, 2018
Latest reply on Oct 8, 2018 by Tomas Vaverka

Hello,

 

We have requirement, SBC is requested to have wake up via CAN and switch change of state on wake up pin.

The SW shall configure the following registers as below:

  • CWE bit from Transceiver event capture enable register (23h) shall be set to logic 1; (this will enable the CAN wake up mechanism)
  • WPRE bit from WAKE pin event enable register (4Ch) shall be set to logic 1; (this will enable rising edge detection on WAKE pin)
  • WPFE bit from WAKE pin event enable register (4Ch) shall be set to logic 0; (this will disable falling edge detection on WAKE pin).

 We observed that wake up by pin happens successfully, and we have a query on CAN standard wake-up

  • What is wake-up pattern, how we can send and how to test?

 

Please let us know how to send wake-up pattern and how to test wake by CAN

 

We are waiting for your response.

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