Changes between Version 6 and Version 7 of Component/Virtual Dspin Router

Timestamp:

Jul 9, 2009, 1:52:55 PM (15 years ago)

Author:

noe.girand@…

Comment:

--

Component/Virtual Dspin Router

@@ -9 +9 @@
 The Virtual Dspin Router is a component which connects up to five input (one local, four for the adjacent Virtual Dspin Router) to five output (idem) for each virtual channel.
 
-Both channels share the same bus for routing. Thus, each input has a time multiplexing register, to decide 
+Both channels share the same bus for routing. Thus, each input has a time multiplexing register, to decide which channel writes on the bus.
+
+It implements the X-First algorithm for broadcast, and X-First or Y-First for broadcast, depending on the sender's coordinates' parity.
+
+During broadcast, order of outputs is determined by their priority : in case of X-First routing, EAST and WEST Output are chosen first (NORTH and SOUTH for Y-routing).
+
+=== Input INFSM States ===
+
+|| FSM_REQ              || Waiting for paquet or sending first flit                     ||
+|| FSM_DTN              || Allocated to correct output for multicast                    ||
+|| FSM_DT_11            || Sending second flit to first output in multicast             ||
+|| FSM_REQ_12           || Sending first flit to second output in multicast             ||
+|| FSM_DT_12            || Sending second flit to second output in multicast            ||
+|| FSM_REQ_21           || Sending first flit to third output in multicast              ||
+|| FSM_DT_21            || Sending second flit to third output in multicast             ||
+|| FSM_REQ_22           || Sending first flit to fourth output in multicast             ||
+|| FSM_DT_22            || Sending second flit to fourth output in multicast            ||
+|| FSM_REQ_LOCAL        || Sending first flit to fifth (LOCAL) output in multicast      ||
+|| FSM_DT_LOCAL         || Sending second flit to fifth (LOCAL) output in multicast     ||
+
+=== Output INFSM States ===
+
+|| LOCAL        || Allocated to LOCAL input                     ||
+|| NORTH        || Allocated to NORTH input                     ||
+|| SOUTH        || Allocated to SOUTH input                     ||
+|| EAST         || Allocated to EAST input                      ||
+|| WEST         || Allocated to WEST input                      ||
+|| NOP_LOCAL    || Not allocated, and last allocated was LOCAL  ||
+|| NOP_NORTH    || Not allocated, and last allocated was NORTH  ||
+|| NOP_SOUTH    || Not allocated, and last allocated was SOUTH  ||
+|| NOP_EAST     || Not allocated, and last allocated was EAST   ||
+|| NOP_WEST     || Not allocated, and last allocated was WEST   ||
+|| NOP_WEST     || Not allocated, and last allocated is unkwnow (equivalent of NOP_LOCAL)||
 
 == 2) Component definition & usage ==