TJA1145 Wakes up with a specific ID

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

TJA1145 Wakes up with a specific ID

504 Views
CCG
Contributor II

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.

0 Kudos
Reply
1 Reply

489 Views
TomasVaverka
NXP TechSupport
NXP TechSupport

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):

Image (8).png

 BR, Tomas

0 Kudos
Reply