_____________________________________________________________________________________
AN
‐
160
Rev.
C
HOLT
INTEGRATED
CIRCUITS
8
Priority
Lable
‐
1
=
LED5
Priority
Label
‐
2
=
LED6
Priority
Label
‐
3
=
LED7
LEDs
1
‐
4
show
the
last
upper
nibble
of
the
transmitted
LSB
byte.
Mode
Descriptions
There
are
six
valid
demo
modes
selectable
by
the
Mode
‐
0,
Mode
‐
1
and
Mode
‐
2
Dip
switches.
Set
the
switches
according
to
the
desired
mode,
ARINC
speed
and
Receiver
Parity
checking
and
power
cycle
the
board
or
press
the
RESET
button
on
the
main
board.
Mode
‐
0
Board
Test:
This
is
a
simple
test
program
that
cycles
the
LEDs
1
‐
8
on
briefly
to
verify
operation.
LED7
will
flash
every
second
independently
in
addition
to
the
normal
flash.
Pressing
down
SW
‐
1
will
stop
the
sequence
and
turn
on
LED1.
Pressing
SW
2
‐
4
will
turn
on
LEDs
2
‐
4
respectively.
This
is
a
way
to
verify
that
the
push
button
switches
work.
The
output
on
the
console
will
be
similar
to:
Holt HI-3593 Demonstration Software Revision: X.X
Board Test
Mode
‐
1
Transmit
Messages
with
Labels
This
mode
demonstrates
most
of
the
capabilities
in
the
HI
‐
3593.
It
first
checks
the
dip
switches
and
configures
the
Transmitter
and
both
Receiver
control
registers
for
Transmit
Parity,
Label
enable/disable,
ARINC
low/
high
speed.
Both
receivers
are
also
configured
depending
on
the
switch
settings.
The
initial
console
screen
looks
similar
to
this,
depending
on
the
switch
settings:
Holt HI-3593 Demonstration Software Revision: X.X
Transmit & Receive With Labels Mode
Fast Speed
Receiver-1 Parity is Enabled
Receiver-2 Parity is Disabled
All labels are Disabled
Press Button-1 to start initially
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