18 SBC330 3U VPX Single Board Computer
Publication No. SBC330-0HH/3
The
full
SBC330
power
‐
on
‐
reset
sequence
takes
approximately
100mS:
• Drive
PSU_SEQ_OUT
low
• Wait
for
VS3
to
reach
4.49Volts.
(90
th
percentile
triggering)
• Wait
for
PSU_SEQ_IN
signal
to
be
high,
or
for
500ms
• Release
PSU_SEQ_OUT
• Following
the
PSU_SEQ_OUT
signal,
which
occurs
once
all
the
on
‐
board
PSUs
have
active
POWER_GOOD
signals,
if
the
board
is
the
slot
‐
1
VPX
controller
then
the
backplane
SYS_RESET
signal
is
driven
low
for
a
further
20
mS.