time
1
st
Safety
Status
2
nd
Safety
Status
3
rd
Safety
Status
PF
1
st
PF
Status
2
nd
PF
Status
3
rd
PF
Status
1
st
ti
m
e
to
n
e
xt
e
ve
n
t
2
n
d
ti
m
e
to
n
e
xt
e
ve
n
t
3
rd
ti
m
e
to
n
e
xt
e
ve
n
t
1
st
ti
m
e
to
n
e
xt
e
ve
n
t
2
n
d
ti
m
e
to
n
e
xt
e
ve
n
t
3
rd
ti
m
e
to
n
e
xt
e
ve
n
t
Black Box Recorder
45
SLUUBD3D – September 2015 – Revised September 2018
Copyright © 2015–2018, Texas Instruments Incorporated
Permanent Fail
NOTE:
This information is useful in failure analysis, and can provide a full recording of the events
and conditions leading up to the permanent failure.
If there were less than three safety events before PF, then some information will be left
blank.
4.21.1 Black Box Recorded Data
4.21.1.1 Safety Status
Class
Subclass
Name
Type
Min
Max
Default
Black Box
Safety Status
1st Safety Status 0–7
H1
0x00
0xFF
0
Black Box
Safety Status
1st Safety Status 8–15
H1
0x00
0xFF
0
Black Box
Safety Status
1st Safety Status 16–23
H1
0x00
0xFF
0
Black Box
Safety Status
1st Safety Status 24–31
H1
0x00
0xFF
0
Black Box
Safety Status
1st Time to Next Event
U1
0
255
0
Black Box
Safety Status
2nd Safety Status 0–7
H1
0x00
0xFF
0
Black Box
Safety Status
2nd Safety Status 8–15
H1
0x00
0xFF
0
Black Box
Safety Status
2nd Safety Status 16–23
H1
0x00
0xFF
0
Black Box
Safety Status
2nd Safety Status 24–31
H1
0x00
0xFF
0
Black Box
Safety Status
2nd Time to Next Event
U1
0
255
0
Black Box
Safety Status
3rd Safety Status 0–7
H1
0x00
0xFF
0
Black Box
Safety Status
3rd Safety Status 8–15
H1
0x00
0xFF
0
Black Box
Safety Status
3rd Safety Status 16–23
H1
0x00
0xFF
0
Black Box
Safety Status
3rd Safety Status 24–31
H1
0x00
0xFF
0
Black Box
Safety Status
3rd Time to Next Event
U1
0
255
0
4.21.1.2 PF Status
Class
Subclass
Name
Type
Min
Max
Default
Black Box
PF Status
1st PF Status 0–7
H2
0x0000
0xFFFF
0
Black Box
PF Status
1st PF Status 8–15
H2
0x0000
0xFFFF
0
Black Box
PF Status
1st PF Status 16–23
H2
0x0000
0xFFFF
0
Black Box
PF Status
1st PF Status 24–31
H2
0x0000
0xFFFF
0
Black Box
PF Status
1st Time to Next Event
U1
0
255
0
Black Box
PF Status
2nd PF Status 0–8
H2
0x0000
0xFFFF
0
Black Box
PF Status
2nd PF Status 9–15
H2
0x0000
0xFFFF
0
Black Box
PF Status
2nd PF Status 16–23
H2
0x0000
0xFFFF
0
Black Box
PF Status
2nd PF Status 24–32
H2
0x0000
0xFFFF
0
Black Box
PF Status
2nd Time to Next Event
U1
0
255
0