From c712bf7a53523fcaa29a10f593ddd7300a99240e Mon Sep 17 00:00:00 2001
From: Michael Boehmer <mboehmer@ph.tum.de>
Date: Sat, 27 Nov 2021 22:17:56 +0100
Subject: [PATCH] K characters added

---
 trb3/DS_LinkEstablishment.tex |  5 ++++-
 trb3/DS_NewResets.tex         | 22 ++++++++++++++++++++++
 trb3/DS_Nomenclature.tex      | 33 ++++++++++++++++++---------------
 3 files changed, 44 insertions(+), 16 deletions(-)

diff --git a/trb3/DS_LinkEstablishment.tex b/trb3/DS_LinkEstablishment.tex
index f85dc69..874c62d 100644
--- a/trb3/DS_LinkEstablishment.tex
+++ b/trb3/DS_LinkEstablishment.tex
@@ -45,4 +45,7 @@ The link establishment process is explained on a hub FPGA slave port as example:
   Both UP and DL are considered stable, and TrbNet payloads as well as special kommas are enabled now. 
 \end{itemize*}
 
-
+To faciliate setups where electrical connections are used for the link (like on the TRB3sc crate backplane)
+all SerDes TX channels send out K{\_}NULL kommas while no stable clock is available. This will inhibit komma 
+locking inside the WordAlignment block.
+ 
diff --git a/trb3/DS_NewResets.tex b/trb3/DS_NewResets.tex
index fbd849c..5f78c59 100644
--- a/trb3/DS_NewResets.tex
+++ b/trb3/DS_NewResets.tex
@@ -22,3 +22,25 @@ to all master ports available, turning them into a broadcast komma.
 The RX control state machine will simply set a register with reception of a RST komma, and 
 provides up to 8 independent reset lines, which should be assigned to dedicated groups of 
 functions (like FE logic, trigger logic, buffers, whatever).
+
+Proposed reset bit usage:
+
+\begin{table}[ht]
+\begin{center}
+\begin{tabular}{|c|c|c|c|c|}
+ \hline
+ \textbf{Bit} & \textbf{Reset name}\\
+\hline\hline
+0 & Frontend Logic \\
+1 & --- \\
+2 & --- \\
+3 & --- \\
+4 & --- \\
+5 & --- \\
+6 & --- \\
+7 & General Reset \\
+\hline
+\end{tabular} 
+\caption{Reset Usage}
+\end{center}
+\end{table} 
diff --git a/trb3/DS_Nomenclature.tex b/trb3/DS_Nomenclature.tex
index eb78c05..e5aec1e 100644
--- a/trb3/DS_Nomenclature.tex
+++ b/trb3/DS_Nomenclature.tex
@@ -1,4 +1,7 @@
 \subsection{Nomenclature used in this section}
+
+For the DeepSea implementation of TrbNet the following nomenclature is being used.
+
 \begin{itemize*}
   \item \textbf{Master Port (MP)}: a serial link port which initiates a connection. 
   In this document, a MP always points "outwards" from CTS to FEs.
@@ -19,24 +22,24 @@ The following kommas will be used in the DeepSea TrbNet branch:
 
 \begin{table}[ht]
 \begin{center}
-\begin{tabular}{|c|c|c|c|}
+\begin{tabular}{|c|c|c|c|c|}
  \hline
- \textbf{Name} & \textbf{Full Name} & \textbf{K Character} & \textbf{D Character}\\
+ \textbf{Name} & \textbf{Symbol} & \textbf{Full Name} & \textbf{K Character} & \textbf{D Character}\\
 \hline\hline
-IDLE& Idle & BC & C5 (idle0) or 50 (idle1)\\
-SOP & Start of Packet & DC & reserved for packet delimiter\\
-EOP & End of Packet & FD & reserved for packet delimiter \\
-BGN & Begin of Transmission & 1C & reserved for retransmission\\
-REQ & Retransmit Request & 7C & reserved for retransmission\\
-DLM & DLM & FB & Deterministic Latency Message \\
-& & 3C & \\
-& & 5C & \\
-& & 9C & \\
-& & FC & \\
-& & F7 & \\
-RST & Reset & FE & bit-coded reset lines\\
+BGN  & K28.0 & Begin of Transmission & 1C & reserved for retransmission\\
+     & K28.1 & & 3C & \\
+     & K28.2 & & 5C & \\
+REQ  & K28.3 & Retransmit Request & 7C & reserved for retransmission\\
+     & K28.4 & & 9C & \\
+IDLE & K28.5 & Idle & BC & C5 (idle0) or 50 (idle1)\\
+SOP  & K28.6 & Start of Packet & DC & reserved for packet delimiter\\
+     & K28.7 & & FC & \\
+NULL & K23.7 & No Link & F7 & TX SerDes in reset\\
+DLM  & K27.7 & DLM & FB & Deterministic Latency Message \\
+EOP  & K29.7 & End of Packet & FD & reserved for packet delimiter \\
+RST  & K30.7 & Reset & FE & bit-coded reset lines\\
 \hline
 \end{tabular} 
 \caption{Comma Characters}
 \end{center}
-\end{table} 
\ No newline at end of file
+\end{table} 
-- 
2.43.0