<s>
XCP	B-Architecture
(	O
or	O
)	O
"	O
Universal	B-Architecture
Measurement	I-Architecture
and	I-Architecture
Calibration	I-Architecture
Protocol	I-Architecture
"	O
is	O
a	O
network	O
protocol	O
originating	O
from	O
ASAM	O
for	O
connecting	O
calibration	O
systems	O
to	O
electronic	B-Device
control	I-Device
units	I-Device
,	O
ECUs	O
.	O
</s>
<s>
Entire	O
datasets	O
can	B-Protocol
be	O
acquired	O
or	O
stimulated	O
synchronous	O
to	O
events	O
triggered	O
by	O
timers	O
or	O
operating	O
conditions	O
.	O
</s>
<s>
In	O
addition	O
,	O
XCP	B-Architecture
also	O
supports	O
programming	O
of	O
flash	O
memory	O
.	O
</s>
<s>
ASAM	O
states	O
"	O
The	O
primary	O
purpose	O
of	O
XCP	B-Architecture
is	O
to	O
adjust	O
internal	O
parameters	O
and	O
acquire	O
the	O
current	O
values	O
of	O
internal	O
variables	O
of	O
an	O
ECU	B-Device
.	O
</s>
<s>
The	O
first	O
letter	O
X	O
in	O
XCP	B-Architecture
expresses	O
the	O
fact	O
that	O
the	O
protocol	O
is	O
designed	O
for	O
a	O
variety	O
of	O
bus	O
systems.	O
"	O
</s>
<s>
In	O
2003	O
,	O
the	O
protocol	O
was	O
standardized	O
as	O
"	O
ASAM	O
MCD-1	O
XCP	B-Architecture
"	O
.	O
</s>
<s>
XCP	B-Architecture
is	O
a	O
successor	O
to	O
CAN	B-Protocol
Calibration	O
Protocol	O
(	O
CCP	O
)	O
that	O
was	O
developed	O
back	O
in	O
the	O
mid-1990s	O
.	O
</s>
<s>
At	O
that	O
time	O
,	O
CAN	B-Protocol
was	O
the	O
dominant	O
networking	O
system	O
in	O
the	O
automobile	O
industry	O
.	O
</s>
<s>
Over	O
time	O
,	O
other	O
bus	O
systems	O
such	O
as	O
LIN	O
,	O
MOST	B-Application
and	O
FlexRay	B-Protocol
emerged	O
and	O
made	O
it	O
necessary	O
to	O
extend	O
the	O
protocol	O
to	O
other	O
transport	O
media	O
.	O
</s>
<s>
In	O
addition	O
,	O
XCP	B-Architecture
supports	O
synchronous	O
and	O
asynchronous	O
serial	O
interfaces	O
.	O
</s>
<s>
With	O
Ethernet	O
or	O
USB	B-Protocol
as	O
the	O
transport	O
medium	O
,	O
XCP	B-Architecture
can	B-Protocol
also	O
serve	O
as	O
a	O
standardized	O
interface	O
to	O
analog	O
measurement	O
devices	O
and	O
to	O
hardware	O
interface	O
converters	O
to	O
RAM	O
emulators	O
,	O
JTAG	O
or	O
other	O
microcontroller	O
debug	O
interfaces	O
.	O
</s>
<s>
Due	O
to	O
its	O
broad	O
range	O
of	O
use	O
,	O
a	O
primary	O
goal	O
in	O
the	O
development	O
of	O
XCP	B-Architecture
was	O
to	O
achieve	O
as	O
lean	O
an	O
implementation	O
in	O
the	O
ECU	B-Device
as	O
possible	O
and	O
high	O
scalability	O
of	O
features	O
and	O
resource	O
utilization	O
.	O
</s>
<s>
XCP	B-Architecture
can	B-Protocol
even	O
be	O
implemented	O
on	O
8-bit	O
microcontrollers	O
for	O
CAN	B-Protocol
or	O
SCI	O
with	O
few	O
resources	O
,	O
and	O
it	O
exploits	O
the	O
full	O
potential	O
of	O
FlexRay	B-Protocol
or	O
Ethernet	O
on	O
high-performance	O
platforms	O
.	O
</s>
<s>
As	O
a	O
two-layer	O
protocol	O
,	O
XCP	B-Architecture
consistently	O
separates	O
the	O
protocol	O
and	O
transport	O
layers	O
from	O
one	O
another	O
and	O
adheres	O
to	O
a	O
Single-Master/Multi	O
-Slave	O
concept	O
.	O
</s>
<s>
XCP	B-Architecture
always	O
uses	O
the	O
same	O
protocol	O
layer	O
independent	O
of	O
the	O
transport	O
layer	O
.	O
</s>
<s>
XCP	B-Architecture
allows	O
a	O
client	O
to	O
access	O
memory	O
on	O
the	O
ECU	B-Device
using	O
a	O
format	O
defined	O
in	O
a	O
separate	O
A2L	O
file	O
.	O
</s>
<s>
Because	O
the	O
A2L	O
format	O
file	O
contains	O
all	O
the	O
information	O
to	O
access	O
the	O
information	O
,	O
the	O
ECU	B-Device
code	O
does	O
not	O
have	O
to	O
be	O
recompiled	O
to	O
access	O
different	O
measurements	O
or	O
calibrations	O
.	O
</s>
