<s>
CompactPCI	B-Architecture
Serial	I-Architecture
is	O
an	O
industrial	O
standard	O
for	O
modular	O
computer	O
systems	O
.	O
</s>
<s>
It	O
is	O
based	O
on	O
the	O
established	O
PICMG	O
2.0	O
CompactPCI	O
standard	O
,	O
which	O
uses	O
the	O
parallel	O
PCI	B-Protocol
bus	I-Protocol
for	O
communication	O
among	O
a	O
system	O
's	O
card	O
components	O
.	O
</s>
<s>
In	O
contrast	O
to	O
this	O
,	O
CompactPCI	B-Architecture
Serial	I-Architecture
uses	O
only	O
serial	O
point-to-point	B-Architecture
connections	I-Architecture
.	O
</s>
<s>
CompactPCI	B-Architecture
Serial	I-Architecture
was	O
officially	O
adopted	O
by	O
the	O
PCI	B-Protocol
Industrial	O
Computer	O
Manufacturers	O
Group	O
PICMG	O
as	O
PICMG	O
CPCI-S.0	O
CompactPCI	B-Architecture
Serial	I-Architecture
in	O
March	O
2011	O
.	O
</s>
<s>
CompactPCI	B-Architecture
Serial	I-Architecture
includes	O
different	O
connectors	O
that	O
permit	O
very	O
high	O
data	O
rates	O
.	O
</s>
<s>
The	O
new	O
technology	O
standard	O
succeeding	O
parallel	O
CompactPCI	O
comprises	O
another	O
specification	O
called	O
PICMG	B-Architecture
2.30	I-Architecture
CompactPCI	I-Architecture
PlusIO	I-Architecture
.	O
</s>
<s>
This	O
is	O
why	O
CompactPCI	B-Architecture
Serial	I-Architecture
and	O
CompactPCI	B-Architecture
PlusIO	I-Architecture
as	O
a	O
whole	O
were	O
also	O
called	O
CompactPCI	B-Architecture
Plus	I-Architecture
.	O
</s>
<s>
PICMG	O
's	O
first	O
working	O
title	O
of	O
CompactPCI	B-Architecture
Serial	I-Architecture
was	O
CPLUS.0	O
.	O
</s>
<s>
CompactPCI	B-Architecture
Serial	I-Architecture
backplanes	O
and	O
chassis	O
are	O
developed	O
by	O
Schroff	O
,	O
Elmа	O
,	O
and	O
Pixus	O
Technologies	O
companies	O
,	O
as	O
for	O
the	O
CompactPCI	B-Architecture
Serial	I-Architecture
board	O
level	O
electronics	O
–	O
they	O
are	O
developed	O
by	O
MEN	O
Mikro	O
Elektronik	O
,	O
Fastwel	O
,	O
EKF	O
,	O
Emerson	O
Embedded	O
Computing	O
,	O
ADLINK	O
,	O
Data	O
Patterns	O
and	O
Kontron	O
.	O
</s>
<s>
Fast	O
serial	O
point-to-point	B-Architecture
connections	I-Architecture
have	O
become	O
the	O
state-of-the-art	O
technology	O
and	O
are	O
gradually	O
replacing	O
the	O
classic	O
bus	O
architecture	O
in	O
computers	O
.	O
</s>
<s>
This	O
is	O
why	O
CompactPCI	B-Architecture
Serial	I-Architecture
was	O
defined	O
as	O
the	O
new	O
future	O
standard	O
.	O
</s>
<s>
Thanks	O
to	O
modern	O
chipset	O
architecture	O
,	O
the	O
structure	O
of	O
computers	O
is	O
slowly	O
changing	O
from	O
bus-based	O
interconnections	O
between	O
interface	O
controllers	O
to	O
a	O
star	B-Architecture
topology	I-Architecture
built	O
up	O
of	O
serial	O
point-to-point	B-Architecture
connections	I-Architecture
.	O
</s>
<s>
CompactPCI	B-Architecture
Serial	I-Architecture
incorporates	O
this	O
star	O
architecture	O
:	O
one	O
system	O
slot	O
can	O
control	O
up	O
to	O
eight	O
peripheral	O
slots	O
.	O
</s>
<s>
Two	O
of	O
these	O
connections	O
can	O
be	O
PCI	B-Protocol
Express	O
x8	O
fat	O
pipes	O
.	O
</s>
<s>
At	O
the	O
same	O
time	O
,	O
CompactPCI	B-Architecture
Serial	I-Architecture
does	O
not	O
need	O
bridges	O
,	O
switched	O
fabrics	O
,	O
or	O
special	O
backplanes	O
.	O
</s>
<s>
The	O
star	O
connection	O
by	O
standard	O
includes	O
PCI	B-Protocol
Express	O
,	O
SATA/SAS	O
,	O
and	O
USB	B-Protocol
.	O
</s>
<s>
CompactPCI	B-Architecture
Serial	I-Architecture
can	O
connect	O
a	O
total	O
of	O
nine	O
cards	O
in	O
a	O
system	O
(	O
one	O
system	O
slot	O
,	O
eight	O
peripheral	O
)	O
through	O
a	O
full	O
Ethernet	O
mesh	B-Architecture
that	O
supports	O
the	O
IEEE	O
802.3	O
Ethernet	O
standard	O
.	O
</s>
<s>
In	O
this	O
way	O
the	O
new	O
specification	O
is	O
optimized	O
for	O
symmetrical	O
multiprocessing	B-Operating_System
and	O
redundant	O
system	O
topologies	O
.	O
</s>
<s>
A	O
major	O
difference	O
compared	O
to	O
CompactPCI	O
is	O
that	O
with	O
CompactPCI	B-Architecture
Serial	I-Architecture
the	O
plug	O
connector	O
is	O
on	O
the	O
board	O
,	O
while	O
the	O
receptacle	O
is	O
on	O
the	O
backplane	O
.	O
</s>
<s>
The	O
system	O
slot	O
of	O
CompactPCI	B-Architecture
Serial	I-Architecture
has	O
six	O
connectors	O
:	O
P1	O
to	O
P6	O
.	O
</s>
<s>
A	O
peripheral	O
CompactPCI	B-Architecture
Serial	I-Architecture
slot	O
only	O
has	O
a	O
small	O
connector	O
with	O
6	O
rows	O
of	O
contacts	O
for	O
power	O
and	O
signals	O
.	O
</s>
<s>
The	O
mechanical	O
specification	O
of	O
PICMG	O
CPCI-S.0	O
CompactPCI	B-Architecture
Serial	I-Architecture
is	O
100%	O
compliant	O
with	O
PICMG	O
2.0	O
CompactPCI	O
except	O
for	O
its	O
new	O
backplane	O
connectors	O
.	O
</s>
<s>
For	O
this	O
reason	O
,	O
PICMG	O
has	O
also	O
created	O
an	O
extension	O
to	O
CompactPCI	O
:	O
PICMG	B-Architecture
2.30	I-Architecture
CompactPCI	I-Architecture
PlusIO	I-Architecture
.	O
</s>
<s>
This	O
standard	O
is	O
intended	O
as	O
a	O
migration	O
path	O
from	O
CompactPCI	O
to	O
CompactPCI	B-Architecture
Serial	I-Architecture
.	O
</s>
<s>
In	O
August	O
2017	O
,	O
PICMG	O
ratified	O
the	O
CompactPCI	B-Architecture
Serial	I-Architecture
Space	O
specification	O
CPCI-S.1	O
R1.0	O
,	O
which	O
provides	O
a	O
highly	O
ruggedized	O
implementation	O
of	O
CompactPCI	B-Architecture
Serial	I-Architecture
.	O
</s>
