2
Hardware Description
21
Rear panel connectors
The
CPM
supports
E
‐
Key
control
by
describing
its
backplane
interfaces
to
the
Shelf
Manager.
Alignment keys
The
CPM
implements
the
K1
and
K2
alignment
blocks
at
the
top
of
Zone
2
and
Zone
3,
as
required
by
the
PICMG
3.0
specification.
The
Zone
2
alignment
block
(K1)
is
assigned
a
keying
value
of
11.
The
Zone
3
alignment
block
(K2)
is
set
to
allow
insertion
of
ATCA
‐
46xx
‐
compatible
RTMs.
Zone 1 connector
The
connectors
in
Zone
1
provide
redundant
‐
48VDC
power
and
Shelf
Management
signals
to
the
boards.
The
power
control
interface
to
the
IPMC
is
through
the
backplane
connector
P10
(Zone
1
power
distribution
connector).
Refer
to
Table 44
on
page 111
for
details.
Zone 2 connectors
The
connectors
in
Zone
2
provide
the
connections
to
the
Base
Interface
and
Fabric
Interface.
All
Fabric
connections
use
point
‐
to
‐
point
100
Ω
differential
signals.
Zone
2
is
called
"Fabric
Agnostic"
which
means
that
any
Fabric
that
can
use
100
Ω
differential
signals
can
be
used
with
an
AdvancedTCA
backplane.
Backplane
connector
J20
provides
Zone
2
connections
to
the
synchronization
clocks
and
to
the
AMC
update
channels.
For
detailed
information
about
the
connector
itself,
refer
to
Table 45
on
page 112.
Backplane
connector
J23
is
the
ATCA
data
transport
connector,
which
provides
Zone
2
connections
for
two
10/100/1000BASE
‐
T
Ethernet
Base
channels
and
two
10GBASE
‐
BX4
Ethernet
Fabric
channels.
For
more
information
about
the
J23
backplane
connector,
refer
to
Table 46
on
page 112.
