diff --git a/doc/images/fsm.svg b/doc/images/packeter_fsm.svg
similarity index 100%
rename from doc/images/fsm.svg
rename to doc/images/packeter_fsm.svg
diff --git a/doc/images/overview.svg b/doc/images/packeter_overview.svg
similarity index 93%
rename from doc/images/overview.svg
rename to doc/images/packeter_overview.svg
index 192bacb074687500e2c30e7005b59e9065ea0ed3..b7138a800e994b5f76b5fa81f36c23c5b024be46 100644
--- a/doc/images/overview.svg
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+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="423px" font-weight="400"><tspan class="TextPosition" x="8385" y="7387"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">Detect </tspan></tspan><tspan class="TextPosition" x="8540" y="7861"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">BPM </tspan></tspan><tspan class="TextPosition" x="8388" y="8335"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">Frame </tspan></tspan><tspan class="TextPosition" x="8040" y="8809"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">Sequence</tspan></tspan></tspan></text>
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+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="423px" font-weight="400"><tspan class="TextPosition" x="8695" y="12476"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">AXI-MM </tspan></tspan><tspan class="TextPosition" x="8646" y="12950"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">registers</tspan></tspan></tspan></text>
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- <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="353px" font-weight="400"><tspan class="TextPosition" x="4513" y="4821"><tspan fill="rgb(255,0,0)" stroke="none" style="white-space: pre">AXIS data</tspan></tspan></tspan></text>
+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="353px" font-weight="400"><tspan class="TextPosition" x="4512" y="4821"><tspan fill="rgb(255,0,0)" stroke="none" style="white-space: pre">AXIS data</tspan></tspan></tspan></text>
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<g class="TextShape">
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- <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="353px" font-style="italic" font-weight="400"><tspan class="TextPosition" x="2131" y="12478"><tspan fill="rgb(128,128,128)" stroke="none" style="white-space: pre">From CPU </tspan></tspan><tspan class="TextPosition" x="2672" y="12872"><tspan fill="rgb(128,128,128)" stroke="none" style="white-space: pre">system</tspan></tspan></tspan></text>
+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="353px" font-style="italic" font-weight="400"><tspan class="TextPosition" x="2131" y="12477"><tspan fill="rgb(128,128,128)" stroke="none" style="white-space: pre">From CPU </tspan></tspan><tspan class="TextPosition" x="2672" y="12871"><tspan fill="rgb(128,128,128)" stroke="none" style="white-space: pre">system</tspan></tspan></tspan></text>
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+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="353px" font-style="italic" font-weight="400"><tspan class="TextPosition" x="711" y="4632"><tspan fill="rgb(128,128,128)" stroke="none" style="white-space: pre">From application,</tspan></tspan></tspan><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="353px" font-style="italic" font-weight="400"><tspan class="TextPosition" x="351" y="5026"><tspan fill="rgb(128,128,128)" stroke="none" style="white-space: pre">Data packet stream</tspan></tspan></tspan></text>
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+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="423px" font-weight="400"><tspan class="TextPosition" x="12140" y="10848"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">State Machine</tspan></tspan></tspan></text>
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+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="423px" font-weight="400"><tspan class="TextPosition" x="7065" y="4624"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">AXIS </tspan></tspan><tspan class="TextPosition" x="6760" y="5098"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">Register </tspan></tspan><tspan class="TextPosition" x="7090" y="5572"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">Slice</tspan></tspan></tspan></text>
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- <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="423px" font-weight="400"><tspan class="TextPosition" x="16916" y="6861"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">AXIS </tspan></tspan><tspan class="TextPosition" x="16005" y="7335"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">Interconnexion</tspan></tspan></tspan></text>
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+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="423px" font-weight="400"><tspan class="TextPosition" x="13403" y="7748"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">Header</tspan></tspan></tspan></text>
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diff --git a/doc/images/schematic.svg b/doc/images/packeter_schematic.svg
similarity index 100%
rename from doc/images/schematic.svg
rename to doc/images/packeter_schematic.svg
diff --git a/doc/images/unpacketer_overview.svg b/doc/images/unpacketer_overview.svg
new file mode 100644
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+ <path fill="rgb(255,255,255)" stroke="none" d="M 8500,8000 L 7000,8000 7000,7000 10000,7000 10000,8000 8500,8000 Z"/>
+ <path fill="none" stroke="rgb(52,101,164)" stroke-width="35" stroke-linejoin="round" d="M 8500,8000 L 7000,8000 7000,7000 10000,7000 10000,8000 8500,8000 Z"/>
+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="423px" font-weight="400"><tspan class="TextPosition" x="7473" y="7648"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">AXIS FIFO</tspan></tspan></tspan></text>
+ </g>
+ </g>
+ <g class="TextShape">
+ <g id="id11">
+ <rect class="BoundingBox" stroke="none" fill="none" x="500" y="6500" width="3501" height="1828"/>
+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="353px" font-style="italic" font-weight="400"><tspan class="TextPosition" x="1506" y="7140"><tspan fill="rgb(128,128,128)" stroke="none" style="white-space: pre">From Ethernet </tspan></tspan><tspan class="TextPosition" x="1913" y="7534"><tspan fill="rgb(128,128,128)" stroke="none" style="white-space: pre">Subsystem,</tspan></tspan></tspan><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="353px" font-style="italic" font-weight="400"><tspan class="TextPosition" x="825" y="7928"><tspan fill="rgb(128,128,128)" stroke="none" style="white-space: pre">Ethernet L2 Frame</tspan></tspan></tspan></text>
+ </g>
+ </g>
+ <g class="com.sun.star.drawing.LineShape">
+ <g id="id12">
+ <rect class="BoundingBox" stroke="none" fill="none" x="9982" y="7350" width="2019" height="301"/>
+ <path fill="none" stroke="rgb(255,0,0)" stroke-width="35" stroke-linejoin="round" d="M 10000,7500 L 11570,7500"/>
+ <path fill="rgb(255,0,0)" stroke="none" d="M 12000,7500 L 11550,7350 11550,7650 12000,7500 Z"/>
+ </g>
+ </g>
+ <g class="com.sun.star.drawing.LineShape">
+ <g id="id13">
+ <rect class="BoundingBox" stroke="none" fill="none" x="4082" y="7165" width="2919" height="486"/>
+ <path fill="none" stroke="rgb(255,0,0)" stroke-width="35" stroke-linejoin="round" d="M 4100,7500 L 6570,7500"/>
+ <path fill="rgb(255,0,0)" stroke="none" d="M 7000,7500 L 6550,7350 6550,7650 7000,7500 Z"/>
+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="353px" font-weight="400"><tspan class="TextPosition" x="4762" y="7421"><tspan fill="rgb(255,0,0)" stroke="none" style="white-space: pre">AXIS data</tspan></tspan></tspan></text>
+ </g>
+ </g>
+ <g class="com.sun.star.drawing.CustomShape">
+ <g id="id14">
+ <rect class="BoundingBox" stroke="none" fill="none" x="11982" y="6182" width="2037" height="2537"/>
+ <path fill="rgb(255,255,255)" stroke="none" d="M 13000,8700 L 12000,8700 12000,6200 14000,6200 14000,8700 13000,8700 Z"/>
+ <path fill="none" stroke="rgb(52,101,164)" stroke-width="35" stroke-linejoin="round" d="M 13000,8700 L 12000,8700 12000,6200 14000,6200 14000,8700 13000,8700 Z"/>
+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="423px" font-weight="400"><tspan class="TextPosition" x="12303" y="7361"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">Header </tspan></tspan><tspan class="TextPosition" x="12246" y="7835"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">removal</tspan></tspan></tspan></text>
+ </g>
+ </g>
+ <g class="com.sun.star.drawing.CustomShape">
+ <g id="id15">
+ <rect class="BoundingBox" stroke="none" fill="none" x="15282" y="6082" width="2037" height="2537"/>
+ <path fill="rgb(255,255,255)" stroke="none" d="M 16300,8600 L 15300,8600 15300,6100 17300,6100 17300,8600 16300,8600 Z"/>
+ <path fill="none" stroke="rgb(52,101,164)" stroke-width="35" stroke-linejoin="round" d="M 16300,8600 L 15300,8600 15300,6100 17300,6100 17300,8600 16300,8600 Z"/>
+ <text class="SVGTextShape"><tspan class="TextParagraph" font-family="Liberation Sans, sans-serif" font-size="423px" font-weight="400"><tspan class="TextPosition" x="15815" y="7024"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">AXIS </tspan></tspan><tspan class="TextPosition" x="15607" y="7498"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">WIDTH </tspan></tspan><tspan class="TextPosition" x="15688" y="7972"><tspan fill="rgb(0,0,0)" stroke="none" style="white-space: pre">CONV</tspan></tspan></tspan></text>
+ </g>
+ </g>
+ <g class="com.sun.star.drawing.LineShape">
+ <g id="id16">
+ <rect class="BoundingBox" stroke="none" fill="none" x="13982" y="7350" width="1319" height="301"/>
+ <path fill="none" stroke="rgb(255,0,0)" stroke-width="35" stroke-linejoin="round" d="M 14000,7500 L 14870,7500"/>
+ <path fill="rgb(255,0,0)" stroke="none" d="M 15300,7500 L 14850,7350 14850,7650 15300,7500 Z"/>
+ </g>
+ </g>
+ </g>
+</svg>
\ No newline at end of file
diff --git a/doc/main.adoc b/doc/main.adoc
index a66cc7083bd1de8c5f77ea204630205a7cfe34a5..ea4ee1418a2c2fd625a6f9233432cfe0b0c368ff 100644
--- a/doc/main.adoc
+++ b/doc/main.adoc
@@ -1,72 +1,114 @@
-= COMCELLNODE BPM PACKETER module documentation
+= COMCELLNODE PACKET module documentation
+
+|===
+| Packeter Module ID | 0x507E1743 | (1350440771)
+| Unpacketer Module ID | 0x507E1746 | (1350440774)
+|===
+
// ================================================================================
== Description
-This module generate Position Packets, embedded in Ethernet L2 Frames ready to be processed by the Xilinx Ethernet Subsystem.
+
+This module contains blocs to allow communication between FOFB nodes.
+It provides a packeter which embeds packets in Ethernet L2 Frames ready to be processed by the Xilinx Ethernet Subsystem.
(Only the Ethernet L2 CRC is missing, which is added by the IP).
+Symetrically, it provides a unpacketer, which retrieve data from packets in L2 frames, received from the Xilinx Ethernet Subsystem.
+_The Xilinx Ethernet Subsystem IP is included in the module CCN_ETHERNET_
+
+The packeter and unpacketer are generic.
+They can be configured to carry position or correction data.
+One just has to configure the data stream width.
+
+
+=== Packeter
+
+It receives a data stream from the application (i.e. from COMBPM module).
+
+The AXIS signals used are:
+
+* TDATA: contains the data, packed format depends on the user.
+* TUSER: contains a sequence number.
+* TVALID: Data strobe
+* TREADY: Data throthling from the module.
-It receives a BPM packet stream from the application (i.e. from COMBPM module and BPM packet filter).
-A new FA sequence is detected with the FA sequence number.
-A known number (indicated by CPU configuration) of BPM packets is included in the output packet.
+The packeter waits for a sequence number change to prepare a new packet.
+A known number (indicated by CPU configuration) of data words are included in the output packet.
A header is appended to the transmitted data.
-It contains some parts of Ethernet Frame (as expected by Xilinx Ethernet Subsystem), concatenated with the Position Packet header (Timestamp, packet ID).
+It contains some parts of Ethernet Frame (as expected by Xilinx Ethernet Subsystem), concatenated with the timestamp and protocol ID.
Error are raised when:
-- Supplementary BPM packets with same FA sequence number are received.
-- Timeout expecting new BPM packets.
+- Supplementary data words with same sequence number are received.
+- Timeout expecting next data words (incomplete packet).
+=== Unpacketer
+
+It receives L2 packets from the Ethernet IP.
+
+It simply removes the header, keeping the values in status register accessible from the AXI-MM.
+Then it changes the data width to get data word by data word transfer on the AXIS output.
// ================================================================================
== Overview
-=== Main operation: Top level
-
-This module works on the streaming BPM packets.
+=== Packeter
-* *Axis Register Slice*. Used to bufferize the incoming BPM packet.
+* *AXIS Register Slice*. Used to bufferize the incoming data words.
Gives time to detect a new sequence and handle back pressure from the stream.
-Indeed, the register will hold the first BPM packet while the header is transmitted.
+Indeed, the register will hold the first data word while the header is transmitted.
-* *Detect BPM frame sequence*.
-Using the FA sequence number, it detects changes in it to synchronize the state machine to the begining of a FA frame.
+* *Detect frame sequence*.
+Using the sequence number, it detects changes in it to synchronize the state machine to the begining of a new packet.
-
-* *Pass or Dump*. Dump BPM packets when seeking for a FA frame begining.
+* *Pass or Dump*. Dump data words when seeking for a sequence begining.
This handles the AXIS signaling to free the input register.
-* *Count BPM packet*. Programmed with the expected number of BPM packets, this decrement when a new BPM packet is added to the Ethernet output frame.
+* *Count BPM packet*. Programmed with the expected number of data words, this decrement when a new data word is added to the Ethernet output frame.
-* *Header*. Prepared header to transfer prior the first BPM packet.
-It is configured with MAC addresses, Frame length and receive a timestamp when the first BPM Packet reaches the input.
+* *Header*. Prepared header to transfer prior the first data word.
+It is configured with MAC addresses, Frame length and receive a timestamp when the first data word reaches the input.
* *State Machine*.
Coordinate the interconnexion, pass/dump.
-It detects erroneous situation (too many/few BPM packets).
+It detects erroneous situation (too many/few data words).
+
+.Basic overview of CCN packeter
+image::images/packeter_overview.svg[]
-.Basic overview of comcell bpmpacketer module
-image::images/overview.svg[]
+=== Unpacketer
+* *AXIS FIFO*. Used to bufferize the incoming stream and perform CDC.
+
+* *Header removal*. Based on a state machine, it removes the header while keeping the values in register ready to be read by the AXI-MM.
+ There it also checks the MAC addressed and protocol ID.
+
+* *AXIS Wconv*. Convert the remaining stream to proper data words.
+
+.Basic overview of CCN unpacketer
+image::images/unpacketer_overview.svg[]
// ================================================================================
== Details
-=== Structural schematic
+=== Packeter
.Structural schematic of comcellnode bpmpacketer.
-image::images/schematic.svg[]
+image::images/packeter_schematic.svg[]
-=== State Machine
.State machine
-image::images/fsm.svg[]
+image::images/packeter_fsm.svg[]
+
+=== Unpacketer
// ================================================================================
== Registers map
-include::regmap.adoc[]
+include::packeter_regmap.adoc[]
+include::unpacketer_regmap.adoc[]
// ================================================================================
== TODO/Future of this module
+* Output timestamps for latency computation ?.
diff --git a/rdl/ccn_packeter.rdl b/rdl/ccn_packeter.rdl
index d5c0a5e08d8c3cd132ad8de5ae1cb0b0f4eb2e15..b3526817a36d00032d14e0a16576f46e4d40ec61 100644
--- a/rdl/ccn_packeter.rdl
+++ b/rdl/ccn_packeter.rdl
@@ -1,14 +1,23 @@
`include "ccn_packeter.vh"
+`define C_ID 0x507E1743
+
addrmap ccn_packeter {
desyrdl_generate_hdl = true;
desyrdl_interface = "AXI4L";
+ reg {
+ desc="Module Identification Number";
+ default sw = r;
+ default hw = r;
+ field {} data[32] = `C_ID;
+ } ID @0x00;
+
reg {
desc="Module version.";
field {hw=w;sw=r;} data[32];
- } VERSION;
+ } VERSION @0x04;
reg {
desc="Ethernet MAC frame destination address. Least Significant Bytes.";
diff --git a/rdl/ccn_unpacketer.rdl b/rdl/ccn_unpacketer.rdl
index 66e2f7f447b1a91c6a1bbeb02df11057a9768a21..d95ef325a68447827608c136e303dfddabf6838e 100644
--- a/rdl/ccn_unpacketer.rdl
+++ b/rdl/ccn_unpacketer.rdl
@@ -1,14 +1,23 @@
`include "ccn_unpacketer.vh"
+`define C_ID 0x507E1746
+
addrmap ccn_unpacketer {
desyrdl_generate_hdl = true;
desyrdl_interface = "AXI4L";
+ reg {
+ desc="Module Identification Number";
+ default sw = r;
+ default hw = r;
+ field {} data[32] = `C_ID;
+ } ID @0x00;
+
reg {
desc="Module version.";
field {hw=w;sw=r;} data[32];
- } VERSION;
+ } VERSION @0x04;
reg {
desc="Ethernet MAC frame destination address. Least Significant Bytes.";