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White Rabbit Standardization
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White Rabbit Standardization
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da0d9d6a
Commit
da0d9d6a
authored
Jun 07, 2011
by
Maciej Lipinski
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wrspec: figures cleanup and update
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17d1d766
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wrspec.tex
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src/wrspec.tex
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da0d9d6a
...
@@ -431,7 +431,7 @@ The delay asymmetry can then be derived from equations \eqref{eq:delayms}, \eqre
...
@@ -431,7 +431,7 @@ The delay asymmetry can then be derived from equations \eqref{eq:delayms}, \eqre
\label
{
sec:hw
}
\label
{
sec:hw
}
This
chapter
gives a general overview of what is required of a hardware to support White Rabbit
This
section
gives a general overview of what is required of a hardware to support White Rabbit
protocol. An appropriate hardware is complementary to the protocol, therefore understand
protocol. An appropriate hardware is complementary to the protocol, therefore understand
hardware requirements is necessary to understanding the protocol itself.
hardware requirements is necessary to understanding the protocol itself.
...
@@ -939,7 +939,7 @@ The initialization rules stated in PTP (clause 8.1.3) apply to the backupParentD
...
@@ -939,7 +939,7 @@ The initialization rules stated in PTP (clause 8.1.3) apply to the backupParentD
%on $E_{rbest}$
%on $E_{rbest}$
%which are qualified as backup Masters by modified State Decision Algorithm, record number 0 being the
%which are qualified as backup Masters by modified State Decision Algorithm, record number 0 being the
%best (described in the
chapter
~\ref{StadeDecisionAlg}).
%best (described in the
section
~\ref{StadeDecisionAlg}).
...
@@ -1348,7 +1348,7 @@ Table~\ref{tab:wrCalibrateTLV}.
...
@@ -1348,7 +1348,7 @@ Table~\ref{tab:wrCalibrateTLV}.
\paragraph
{
CALIBRATED
}
Message sent by a WR port entering the
\textit
{
CALIBRATED
}
state.
\paragraph
{
CALIBRATED
}
Message sent by a WR port entering the
\textit
{
CALIBRATED
}
state.
If preceded by the
\textit
{
CALIBRATE
}
message with
\textit
{
calSendPattern
}
set to TRUE,
If preceded by the
\textit
{
CALIBRATE
}
message with
\textit
{
calSendPattern
}
set to TRUE,
it indicates successful completion of the calibration. The message provides the other
node
with the
it indicates successful completion of the calibration. The message provides the other
port
with the
values of its fixed delays (
$
\Delta
_{
tx
}$
and
$
\Delta
_{
rx
}$
).
values of its fixed delays (
$
\Delta
_{
tx
}$
and
$
\Delta
_{
rx
}$
).
The message shall have the format specified in Table~
\ref
{
tab:wrCalibratedTLV
}
.
The message shall have the format specified in Table~
\ref
{
tab:wrCalibratedTLV
}
.
...
@@ -1465,10 +1465,10 @@ exited (WR State Machine execution started), no transitions on the PTP State Mac
...
@@ -1465,10 +1465,10 @@ exited (WR State Machine execution started), no transitions on the PTP State Mac
until WR State Machine finishes execution and returns to the IDLE state.
until WR State Machine finishes execution and returns to the IDLE state.
WR Link Setup involves the recognition of two
WR Link Setup involves the recognition of two
compatible WR
node
s, syntonization over the physical layer, measurement of fixed delays and
compatible WR
port
s, syntonization over the physical layer, measurement of fixed delays and
exchange of their values across the link. The procedure differs between WR Master and WR Slave,
exchange of their values across the link. The procedure differs between WR Master and WR Slave,
therefore three states are Slave-only (entered only if the
node
is in WR Slave mode) and one
therefore three states are Slave-only (entered only if the
port
is in WR Slave mode) and one
state is Master-only (entered only if the
node
is in WR Master mode). The WR FSM shall be
state is Master-only (entered only if the
port
is in WR Master mode). The WR FSM shall be
executed in the PTP UNCALIBRATED state on the WR Slave (WR Port in WR Slave mode) and in
executed in the PTP UNCALIBRATED state on the WR Slave (WR Port in WR Slave mode) and in
the PTP MASTER state on the WR Master (WR Port in WR Master mode).
the PTP MASTER state on the WR Master (WR Port in WR Master mode).
The WR FSM is depicted in Figure~
\ref
{
fig:wrFSM
}
and described in the rest of this section.
The WR FSM is depicted in Figure~
\ref
{
fig:wrFSM
}
and described in the rest of this section.
...
@@ -1559,7 +1559,7 @@ S\_LOCK & Slave-only state. The WR Slave locks its logic to the freq
...
@@ -1559,7 +1559,7 @@ S\_LOCK & Slave-only state. The WR Slave locks its logic to the freq
LOCKED
&
Slave-only state. Upon entering this state, WR Slave sends
$
LOCKED
$
message
LOCKED
&
Slave-only state. Upon entering this state, WR Slave sends
$
LOCKED
$
message
to inform that it is syntonized, and waits for the
\textit
{
CALIBRATE
}
message.
to inform that it is syntonized, and waits for the
\textit
{
CALIBRATE
}
message.
\\
\hline
\\
\hline
REQ
\_
CALIBRATION
&
In this state, optional calibration of the
node
's reception fixed delay can
REQ
\_
CALIBRATION
&
In this state, optional calibration of the
port
's reception fixed delay can
be performed.
be performed.
Upon entering this state, the WR Port sends a
\textit
{
CALIBRATE
}
message to
Upon entering this state, the WR Port sends a
\textit
{
CALIBRATE
}
message to
the other WR Port. If the calibration is needed,
the other WR Port. If the calibration is needed,
...
@@ -1644,11 +1644,11 @@ WR\_LINK\_ON & Upon entering this state by the WR Master, it sends WR\_LI
...
@@ -1644,11 +1644,11 @@ WR\_LINK\_ON & Upon entering this state by the WR Master, it sends WR\_LI
% hardware indicating that calibration has been completed successfully.
% hardware indicating that calibration has been completed successfully.
\item
[CALIBRATED MESSAGE]
(abrv. M
\_
CALIBRATED) Event triggered by the
\item
[CALIBRATED MESSAGE]
(abrv. M
\_
CALIBRATED) Event triggered by the
reception of the WR
\text
{
CALIBRATED
}
Signaling message. It indicates that the
node
is
reception of the WR
\text
{
CALIBRATED
}
Signaling message. It indicates that the
port
is
calibrated. If the
\textit
{
CALIBRATED
}
message is received when the calibration pattern is
calibrated. If the
\textit
{
CALIBRATED
}
message is received when the calibration pattern is
being sent by the recipient, sending of the pattern shall be disabled.
being sent by the recipient, sending of the pattern shall be disabled.
% The message carries information about fixed delays
% The message carries information about fixed delays
% of the sending
node
.
% of the sending
port
.
\item
[WR MODE ON]
(abrv. M
\_
WR
\_
MODE
\_
ON) Event triggered by the
\item
[WR MODE ON]
(abrv. M
\_
WR
\_
MODE
\_
ON) Event triggered by the
reception of the WR
\textit
{
WR
\_
MODE
\_
ON
}
Signaling message. It indicates that the WR Master
reception of the WR
\textit
{
WR
\_
MODE
\_
ON
}
Signaling message. It indicates that the WR Master
...
@@ -1862,12 +1862,12 @@ inactive unless specifically activated by a management procedure.
...
@@ -1862,12 +1862,12 @@ inactive unless specifically activated by a management procedure.
\\
\\
The node management shall implement the management message mechanism of the IEEE1588-2008 standard.
The node management shall implement the management message mechanism of the IEEE1588-2008 standard.
\\
\\
The best master algorithm shall be the algorithm specified in
Chapter
~
\ref
{
sec:wrBMC
}
of this
The best master algorithm shall be the algorithm specified in
section
~
\ref
{
sec:wrBMC
}
of this
document (Modified BMC).
document (Modified BMC).
\\
\\
The delay request-response mechanism shall be the only path delay measurement mechanism.
The delay request-response mechanism shall be the only path delay measurement mechanism.
\\
\\
The TLV mechanism described in
Chapter
~
\ref
{
sec:wrMSG
}
shall be supported.
The TLV mechanism described in
section
~
\ref
{
sec:wrMSG
}
shall be supported.
\\
\\
% \subsection{WRPTP Extension to PTP}
% \subsection{WRPTP Extension to PTP}
...
...
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