
Data Sheet
45
Rev. 1.00
2017-07-31
TLE9262-3BQX
5.4.2.2
Wake-up Pattern (WUP)
A WUP is signaled on the bus by two consecutive dominant bus levels for at least t
Wake1
, each separated by a
recessive bus level.
Figure 13 WUP detection following the definition in ISO 11898-2:2016
5.4.2.3
Wake-up Frame (WUF)
The wake-up frame is detection is implemented as defined in ISO 11898-2:2016.
Only CAN frames according ISO11989-1 are considered as potential wake-up frames.
A bus wake-up shall be performed, if selective wake-up function is enabled and a "valid WUF" has been
received. The transceiver may ignore up to four consecutive CAN data frames that start after switching on the
bias.
A received frame is a “valid WUF” in case all of the following conditions are met:
• The ID of the received frame is exactly matching a configured ID in the relevant bit positions. The relevant
bit positions are given by an ID mask. The ID and the ID mask might have either 11 bits or 29 bits.
• The DLC of the received frame is exactly matching the configured DLC.
Ini
Bias off
1
Bias off
2
Bias off
3
Bias on
4
Bias on
Wait
Bias off
Bus recessive > t
WAKE1
Bus dominant > t
WAKE1
optional:
t
WAKE2
expired
Bus recessive > t
WAKE1
Bus dominant > t
WAKE1
Bus recessive > t
WAKE1
Bus dominant > t
WAKE1
optional:
t
WAKE2
expired
t
Silence
expired AND
Device in low-power mode
t
Silence
expired AND
device in low-power mode
Entering CAN Normal
or CAN Recive Only
Entering low -power mode ,
when selective wake-up
function is disabled
or not supported
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