Home.md

@@ -3,46 +3,47 @@
 ## Introduction
 
 The Cute-WR-DP is the enhanced version of
-[Cute-WR](https://www.ohwr.org/project/cute-wr/wiki) with dual WR ports,
-they can work in parallel to provide redundancy for high reliable
-application or work in chain to support cascade topology.
+[Cute-WR](https://www.ohwr.org/project/cute-wr/wiki) with dual WR
+ports,The two ports can act in different modes:
+
+1\) parallel mode (Cute-WR-DP-PM)  
+In PM mode both port acts as down-link port connect to different WRS,
+provide redundancy to improve the relibility for safety related
+applications. Two WRPC work simultaneously on each port, the switch over
+efforts developed on WRS can be adapted.  
+2\) chain mode(Cute-WR-DP-CM)  
+In CM mode, two ports act as one down-link and one up-link to support
+cascade topology. With deeper modification to WR technology
+(show-stopper I am not aware may exist), more attractive features can be
+explored like ring topology, on-the-fly data transmission, reflective
+memory (GE property though). The possibilities can be remarkable.
 
 ## Structure Design
 
-cute-wr is originally derived from and keeps firmware compatibly with
-the [SPEC](https://www.ohwr.org/project/spec/wiki) board. The [White
-Rabbit Node Reference
-Design](https://www.ohwr.org/project/white-rabbit/wikis/WRReferenceDesign)
-has detailed information on infrastructure design.
-
 Cute-WR-DP-structure.jpg
 
 ## Features:
 
-  - Standalone Operation;
-  - Spartan 6 (XC6SLX45T-3FGG484C);
+  - Standard FMC form;
+  - Two WR compatible SFP sockets;
+  - Spartan 6 (XC6SLX45T-4CSG324C);
   - 32MBit SPI FLASH (M25P32-VMF6P);
   - 64Kbit I2C EEPROM (24AA64T-I/MC);
   - FMC LPC interface;
+  - Addition Low-cost connector on FMC Region3
   - JTAG and RS232;
   - External CLK reference (work in master mode);
-  - 125MHz CLK and PPS output;
-  - 3 user LEDs;
+  - Adjustable CLK output (optional)
+  - 2 USER IO on front panel
+  - 2 panel LEDs;
 
 ## Application orientation
 
-Timing distribution for LHAASO Project:
+Event Sequence Logger for Beam Protect System for Chinese ADS
+(Accelerator Driven Sub-critical System)
 
 Please refer to:
 
-  - [The proposed Large High Altitude Air Shower Observatory (LHAASO)
-    project](http://english.ihep.cas.cn/ic/ip/LHAASO/)
-  - Guanghua Gong, Shaomin Chen, Qiang Du, Jianming Li, Yinong Liu,
-    Huihai He, [Sub-nanosecond timing system design and development for
-    LHAASO
-    Project](http://www.esrf.eu/icalepcs2011/papers/webhmult04.pdf) , in
-    Proceedings of ICALEPCS2011, Grenoble, France, 2011 
-
 ## Current status
 
 <table>
@@ -52,56 +53,16 @@ Please refer to:
 <td><b> Event </b></td>
 </tr>
 <tr class="even">
-<td>20-10-2011</td>
-<td>Start of project. Framework design finished.</td>
-</tr>
-<tr class="odd">
-<td>29-11-2011</td>
-<td>Schematic and PCB drawing reviewed.</td>
-</tr>
-<tr class="even">
-<td>15-02-2012</td>
-<td>PCB fabrication and assembly finished in Tsinghua.</td>
-</tr>
-<tr class="odd">
-<td>12-03-2012</td>
-<td>Start of the project management cute-wr on ohwr.org.</td>
-</tr>
-<tr class="even">
-<td>14-03-2012</td>
-<td>First demo worked together with WR switch and SPEC.</td>
-</tr>
-<tr class="odd">
-<td>12-05-2012</td>
-<td>In-depth development and test with wr-cores::spll_ng branch, getting ready to publish a separate branch for cute-wr and other compact, standalone WR reference designs.</td>
-</tr>
-<tr class="even">
-<td>12-06-2012</td>
-<td>Presented at IEEE realtime 2012 conference at Berkeley. [Development of White Rabbit Interface for Synchronous Data Acquisition and Timing Control](https://www.ohwr.org/project/white-rabbit/uploads/0f7e470f2701f6d499b3188602ebb85a/RT2012_PS2_10.pdf)</td>
-</tr>
-<tr class="odd">
-<td>10-25-2012</td>
-<td>Release of cute-wr v2.0</td>
+<td>26-03-2014</td>
+<td>Start of project. Conceptual Idea.</td>
 </tr>
 </tbody>
 </table>
 
 ## Users list
 
-  - [Large High Altitude Air Shower Observatory (LHAASO)
-    project](http://english.ihep.cas.cn/ic/ip/LHAASO/)
-  - [Daya Bay Reactor Neutrino
-    Experiment](http://dayabay.ihep.ac.cn/twiki/bin/view/Public/)
-  - [China JinPing underground Laboratory
-    (CJPL)](http://wwwgerda.mppmu.mpg.de/symp/03_Yue.pdf)
-  - [Lawrence Berkeley National Lab (LBNL)](http://www.lbl.gov)
-  - [Facility for Rare Isotope Beams (FRIB)](http://www.frib.msu.edu/)
-  - [American Biomedical
-    Group(ABGI)](http://www.americanbiomedicalgroup.net/)
-
-cute-wr\_v2.jpg  
-Version 1.0 has been tested on March 5, 2012, and showed a similar
-performance comparing with SPEC boards.  
-Version 2.0 tesetd on Oct, 25, 2012, tested under wrpc-sw and wr-cores
-(branch:cute-wr).
+  - [China Accelerator Driven Sub-critical
+    System](http://english.ihep.cas.cn/rs/fs/ADS/)
+  - [China Spallation Neutron
+    Source](http://csns.ihep.ac.cn/english/index.htm)