TJA1145 Wakes up with a specific ID

[CCG]

Set to wake up for a specific ID,and then enter the sleep mode,if you can wake up with a specific ID,non-specific ID can not wake up;However,after entering sleep mode,using the specific ID first will cause the specific ID to fail to wake up.The value of register 0x22 changer from 0x28 to 0x30,COSCS=1,how to handle this situation.

[TomasVaverka]

Hi,

For TJA1145 with the dedicated wakeup frame, the internal decoder will be activated when TJA1145 receive the first CAN message in sleep. Hence, two frames should be sent at once, the second frame must meet the wake-up requirements, and then TJA1145 will wake up. As the decoder is designed for low consumption, if there is only one frame message, TJA1145 will stay in sleep mode.

Please keep the interval between two frames within tto(silence):

 BR, Tomas