Apalis Carrier Board Design Guide
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Page | 67
Figure 58: Shut-down sequence
When the RESET_MICO# is asserted, a reset cycle is initiated. The module internal reset and the
external reset output RESET_MOCI# are asserted as long as RESET_MICO# is asserted. If the reset
input RESET_MICO# is de-asserted, the internal reset and the RESET_MOCI# will remain low for at
least 1ms until they are also de-asserted and the module starts booting again. This guarantees a
minimum reset time of 1ms even if the reset input RESET_MICO# is triggered for a short time.
Some Apalis modules may implement a power cycle during reset.
Figure 59: Reset sequence
7-27V Carrier Board in
VCC input for Module
Module internal Rails
POWER_ENABLE_MOCI
5V for Perpherals on CB
3.3V for Perpherals on CB
RESET_MOCI#
WAKE1_MICO#
S
h
u
t
D
o
w
n
(
R
U
N
-
>
O
F
F
)
State
OFF
RUN -> OFF
RUN
Module internal Reset
RESET_MICO#
>0ms
7-27V Carrier Board in
VCC input for Module
Module internal Rails
POWER_ENABLE_MOCI
5V for Perpherals on CB
3.3V for Perpherals on CB
RESET_MOCI#
WAKE1_MICO#
R
e
s
e
t
S
e
q
u
e
n
c
e
(
R
U
N
-
>
R
e
s
e
t
->
R
U
N
)
State
Reset
RUN
Module internal Reset
RESET_MICO#
RUN
>1ms
>1ms