Kontron VMP3 - Manual (Page 136)

WDOG Functionality VMP3
Page A - 4 © 2005 Kontron Modular Computers GmbH ID 29230, Rev. 01
29230
.01.UG.VC.050727/091441
P R E L I M I N A R Y
Figure A-1: WDOG Functional States
Co
unte
r Runn
in
g
RESET
C
o
unt
er
Ov
erfl
ow
In
te
rr
upt St
at
e
Co
unte
r Ru
nn
in
g
Force R
e
set
RST_O
U
T =
active
C
ount
er
Run
ning 1
C
oun
te
r Ru
nn
ing
2
Interrupt Path
Reset P
ath
WD-S
ta
te
-Diagr
amm
VMP
3
IR
Q_
O
U
T
=
inac
tive
R
S
T_
O
U
T
=
inac
tive
WT
E
=
R/
W
W
EN
=
R
/W
WM
D
=
R
/W
W
T
M
=
R
/W
IR
Q_OU
T
=
inac
tive
R
S
T
_
OU
T
=
inac
tive
WT
E
=
R/
W
W
T
R
=
R
/W
WM
D
=
R
W
T
M
=
R
WM
D
[1
:0]
=
10b
WE
N
=
1
WT
R
=
1
IR
Q
_
O
U
T
=
a
ct
iv
e
RST
_
OUT
=
in
ac
tive
WT
E
=
R/
W
W
TR
=
R
/W
WM
D
=
R
W
T
M
=
R WT
R
=
1
IR
Q_
O
U
T
=
inac
tive
R
S
T
_O
U
T
=
inac
tive
WT
E
=
R/
W
W
T
R
=
R
/W
WM
D
=
R
W
T
M
=
R
WT
R
=
1
C
ount
er
Ov
erf
low
Dual
S
ta
g
e
WMD
[1
:0]
=
11b
WE
N
=
1 IR
Q_OU
T
=
active
RST
_
O
U
T
=
in
a
ct
ive
WT
E
=
R
/W
W
TR
=
R
/W
WMD
=
R
W
TM
=
R
WTR
=
1
Co
un
ter
O
verf
low
WT
R
=
1
C
o
unt
er
Ov
erfl
ow
IR
Q_OU
T
=
inactiv
e
RST
_
OU
T
=
inac
tive
WT
E
=
R/
W
W
T
R
=
R
/W
WM
D
=
R
W
T
M
=
R
IR
Q_OU
T
=
in
activ
e
RS
T_OU
T
=
ac
tiv
e
WT
E
=
R
/W
W
TR
=
R
/W
WMD
=
R
W
TM
=
R
W
M
D
[1:0]
=
01b
WE
N
=
1
Timer Only
W
M
D[
1:
0
]
=
0
0b
WEN
=
1
Counter R
unning
Co
un
te
r
Overflo
w
Tim
e
r Expired
IR
Q_OU
T
=
in
active
RST
_
O
U
T
=
in
a
ct
ive
WT
E
=
R
/W
W
TR
=
R
/W
WMD
=
R
W
TM
=
R
WTR
=
1
IRQ_O
U
T
=
in
activ
e
RS
T_O
U
T
=
in
ac
tiv
e
WT
E
=
R/
W
W
T
R
=
R
/W
WMD
=
R
W
TM
=
R WTR
=
1