TJA1080A Datasheet, PDF (10/50 Pages) NXP Semiconductors – FlexRay transceiver

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Table 4. State transitions forced by EN and STBN (node configuration)
→ indicates the action that initiates a transaction; →1 and →2 are the consequences of a transaction.
Transition Direction to Transition Pin
from mode mode
number
STBN
EN
Normal
Receive-only 1
H
→L
Flag
UV_VIO
cleared
UV_VBAT
cleared
UV_VCC
cleared
PWON
cleared
Wake
cleared
Note
Go-to-sleep 2
→L
H
cleared
cleared
cleared
cleared
cleared
Standby
3
→L
→L
cleared
cleared
cleared
cleared
cleared
[1]
Receive-only Normal
4
H
→H
cleared
cleared
cleared
X
X
Go-to-sleep 5
→L
→H
cleared
cleared
cleared
X
X
Standby
6
→L
L
cleared
cleared
cleared
X
X
Standby
Normal
7
→H
→H
cleared
cleared
2 → cleared X
1 → cleared
[2][3]
Receive-only 8
→H
L
cleared
cleared
2 → cleared X
1 → set
[2][3]
Go-to-sleep 9
L
→H
cleared
cleared
X
X
X
Go-to-sleep Normal
10
→H
H
cleared
cleared
cleared
X
1 → cleared
[2][4]
Receive-only 11
→H
→L
cleared
cleared
cleared
X
1 → set
[2][4]
Standby
12
L
→L
cleared
cleared
X
X
X
[4]
Sleep
13
L
H
cleared
cleared
X
X
cleared
[5]
Sleep
Normal
14
→H
H
2 → cleared 2 → cleared 2 → cleared X
1 → cleared
[2][3]
Receive-only 15
→H
L
2 → cleared 2 → cleared 2 → cleared X
1 → set
[2][3]
[1] STBN must be set to LOW at least t_det(EN) after the falling edge on EN.
[2] Positive edge on pin STBN sets the wake flag. In the case of a transition to Normal mode the wake flag is immediately cleared.
[3] Setting the wake flag clears the UV_VIO, UV_VBAT and UV_VCC flag.
[4] Hold time of go-to-sleep is less than the minimum hold time.
[5] Hold time of go-to-sleep becomes greater than the minimum hold time.