Teledyne
LeCroy
Expandability
24
Sierra
M6
‐
2
SAS/SATA
Protocol
Analyzer
User
Manual
Cascading
and
Memory
Size
For
example,
you
have
two
units.
The
first
one
has
2 GB
memory.
The
second
one
has
4 GB
memory.
The
system
shows
the
entire
memory
as
6 GB.
If
you
set
buffer size
to
6 GB,
the
system
programs
the
first
board
for
2 GB
and
the
second
board
for
4 GB.
You
can
consider
this
ratio
when
you
set
buffer
size
to
any
value.
For
example,
if
you
set
buffer
size
to
2 GB,
the
system
programs
the
first
board
for
(2*2)/6 GB
and
the
second
board
for
(2*4)/6 GB.
Any
unit
that
has
more
memory
will
have
larger
buffer
size.
1.9.1
Cascading with STX SYNC Expansion Cards
You
can
use
cascading
of
analyzer
units
for
higher
port
count,
by
daisy
chaining
the
units
through
the
provided
Expansion
and
Clock
In/Out
interfaces
on
the
analyzer
back.
Connect
“Out”
connectors
to
“In”
connectors
of
the
next
unit
in
the
chain,
for
both
Signal
and
Clock
interfaces.
You
must
provide
external
hubs
for
connecting
the
host
machine
to
these
units
using
USB
or
Ethernet.
You
can
cascade
up
to
eight
units.
Use
the
STX
SYNC
Expansion
Cards
to
sequentially
trigger
the
State
Machine
in
Advanced
mode.
If
you
mix
Sierra
M6
‐
4,
Sierra
M6
‐
2,
and
STX
A6
‐
4
analyzers/emulators,
put
Sierra
boards
first,
then
STX.
Note:
Because
chain
connections
for
cascading
boards
cause
delay
of
signals,
traffic
on
different
boards
is
not
completely
time
synchronized,
with
about
one
DWORD
difference
between
consecutive
boxes.
Cascading
To
set
up
the
units
in
a
cascade:
1. Connect
all
units
to
the
host
machine
using
either
USB
or
Ethernet
cables.
You
can
use
hubs.
2. Locate
the
Expansion
and
Clock
ports
on
the
back
of
each
unit.
Figure 1.6: Expansion and Clock Ports
3. Connect
the
OUT
Clock
connector
of
Unit
1
to
the
IN
Clock
connector
of
Unit
2
using
the
supplied
stacking
cables.
Similarly
connect
any
additional
units.
4. Connect
the
OUT
10
‐
pin
connector
of
Unit
1
to
the
IN
10
‐
pin
connector
of
Unit
2
using
the
supplied
stacking
cables.
Similarly
connect
any
additional
units.
Note:
Unit
1
must
be
the
unit
that
has
the
first
out
connection.
Summary of Contents for Sierra M6-2
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