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_____________________________________________________________________________________
AN
‐
160
Rev.
C
HOLT
INTEGRATED
CIRCUITS
7
OPT2
switch
Receiver
Label,
Priority
Label
Enable
Open=Enables
label
recognition.
This
includes
the
256
possible
labels
and
also
the
three
Priority
Label
Boxes
in
both
Receiver
‐
1
and
Receiver
‐
2.
BITRATE0
switch
ARINC
High
or
Low
Speed
selection
Open
=
Low
Speed.
Closed
=High
Speed.
This
program
configures
the
Transmitter,
Reciever
‐
1
and
Receiver
‐
2
to
High
or
Low
speed
according
to
this
switch
setting.
BITRATE1
switch
Receiver
‐
1
Parity
Checking
Open
=
Receiver
‐
1
parity
checking
Enabled.
Closed
=Receiver
‐
1
Parity
checking
Disabled.
BITRATE2
switch
Receiver
‐
2
Parity
Checking
Open
=
Receiver
‐
2
parity
checking
Enabled.
Closed
=
Receiver
‐
2
Parity
checking
Disabled.
Push
Buttons
SW1
‐
SW4
Depending
on
selected
mode,
these
buttons
perform
specific
tasks.
LED
Indicators
LEDs
1
‐
8
show
the
program
revision
after
a
reset
and
also
status
information
during
the
demo
execution.
The
format
for
the
program
revision
is
LED8
–
LED5
=
digit,
LED4
‐
LED1
=
sub
digit
For
program
revision
1.0,
LED5
will
be
turned
on
for
two
seconds
before
the
program
continues.
The
program
also
displays
the
program
revision
on
the
Console.
The
red
LED8
is
used
to
show
a
fault
if
the
program
cannot
initialize
the
HI
‐
3593.
After
performing
a
MR
the
program
checks
the
transmit
status
register
for
the
default
value
0x01.
If
this
value
is
not
read
the
program
turns
on
the
red
LED
and
enters
a
dead
loop.
LED7
will
usually
flash
at
a
one
second
interval
to
show
the
program
is
running.
For
Mode
‐
1
and
Mode
‐
2,
LEDs
5
‐
7
are
reconfigured
to
blink
when
a
Priority
Label
is
received
by
either
Receiver
‐
1
or
Receiver
‐
2:
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