<s>
Advanced	B-Architecture
Mezzanine	I-Architecture
Cards	I-Architecture
are	O
printed	O
circuit	O
boards	O
(	O
PCBs	O
)	O
that	O
follow	O
a	O
specification	B-Application
of	O
the	O
PCI	O
Industrial	O
Computers	O
Manufacturers	O
Group	O
(	O
PICMG	O
)	O
.	O
</s>
<s>
Known	O
as	O
AdvancedMC	B-Architecture
or	O
AMC	O
,	O
the	O
official	O
specification	B-Application
designation	O
is	O
AMC.x.	O
</s>
<s>
AMC	O
modules	O
are	O
designed	O
to	O
work	O
standalone	O
,	O
hot	O
pluggable	O
on	O
any	O
carrier	O
card	O
(	O
base	O
boards	O
and	O
system	O
carrier	O
boards	O
in	O
AdvancedTCA	O
Systems	O
)	O
or	O
as	O
a	O
hot	O
pluggable	O
board	O
into	O
a	O
backplane	O
directly	O
as	O
defined	O
by	O
MicroTCA	O
specifications	B-Application
.	O
</s>
<s>
The	O
AMC	O
standard	O
differs	O
from	O
other	O
mezzanine	O
card	O
standards	O
such	O
as	O
PCI	O
Mezzanine	O
Card	O
(	O
PMC	O
)	O
,	O
PCIexpress	O
Mezzanine	O
Card	O
XMC	O
and	O
FMC	O
–	O
FPGA	O
Mezzanine	O
Card	O
by	O
the	O
0	O
degree	O
instead	O
of	O
90	O
degree	O
orientation	O
of	O
its	O
connector	O
enabling	O
hot	B-Device
plug	I-Device
of	O
the	O
AMC	O
.	O
</s>
<s>
AMC.0	O
is	O
the	O
"	O
base	O
"	O
or	O
"	O
core	O
"	O
specification	B-Application
.	O
</s>
<s>
The	O
AdvancedMC	B-Architecture
definition	O
alone	O
defines	O
a	O
protocol	O
agnostic	O
connector	O
to	O
connect	O
to	O
a	O
carrier	O
card	O
or	O
a	O
backplane	O
.	O
</s>
<s>
An	O
AMC	O
card	O
can	O
use	O
proprietary	O
LVDS-based	O
signaling	O
,	O
or	O
one	O
of	O
the	O
following	O
AMC	O
specifications	B-Application
:	O
</s>
<s>
The	O
pinout	B-Application
of	O
the	O
AMC	O
electrical	B-Protocol
connector	I-Protocol
on	O
an	O
ATCA-AMC	O
carrier	O
or	O
motherboard	O
is	O
fairly	O
complex	O
,	O
with	O
up	O
to	O
170	O
signal	O
traces	O
.	O
</s>
<s>
There	O
are	O
four	O
different	O
lengths	O
the	O
traces	O
can	O
be	O
,	O
which	O
allows	O
hot	B-Device
swapping	I-Device
by	O
knowing	O
in	O
advance	O
which	O
traces	O
will	O
become	O
active	O
in	O
which	O
order	O
upon	O
insertion	O
.	O
</s>
<s>
The	O
AdvancedMC	B-Architecture
card	O
is	O
considered	O
powerful	O
enough	O
that	O
there	O
are	O
situations	O
where	O
the	O
processing	O
functionality	O
is	O
the	O
only	O
requirement	O
.	O
</s>
<s>
Versions	O
of	O
MicroTCA	O
with	O
fewer	O
AdvancedMC	B-Architecture
card	O
slots	O
are	O
informally	O
known	O
as	O
NanoTCA	O
and	O
PicoTCA	O
.	O
</s>
