Added comments

applications/apertif/designs/apertif_unb1_correlator/src/vhdl/apertif_unb1_correlator.vhd

@@ -490,7 +490,7 @@ BEGIN
     -----------------------------------------------------------------------------
     -----------------------------------------------------------------------------
     -- Rewire: for each input stream, extract the 4 concatenated BF output streams
-    --         and assign to its own _2arr dimension
+    --         and assign them to the interleaved array. 
     -----------------------------------------------------------------------------
     p_extract_bf_streams : PROCESS(dp_bsn_align_src_out_arr)
     BEGIN
@@ -524,6 +524,40 @@ BEGIN
     );  
   END GENERATE;
   
+  ---------------------------------------------------------------------------------------
+  -- The reorder and interleaving results in the following cross:
+  --      
+  --     from BG                                                      to
+  --     or 10GbE                                                   filterbank
+  --
+  --  interleaved_arr  deinterleaved_arr  reinterleaved_in_arr  reinterleaved_in_arr 
+  --
+  --       0,1                0                  0                      0,8
+  --       2,3                1                  8                     16,1
+  --       4,5                2                  16                    9,17
+  --       6,7                3                  1                     2,10
+  --       8,9                4                  9                     18,3
+  --      10,11               5                  17                   11,19
+  --      12,13               6                  2                     4,12
+  --      14,15               7                  10                    20,5
+  --      16,17               8                  18                   13,21
+  --      18,19               9                  3                     6,14
+  --      20,21              10                  11                    22,7
+  --      22,23              11                  19                   15,23
+  --                         12                  4
+  --                         13                  12
+  --                         14                  20
+  --                         15                  5
+  --                         16                  13
+  --                         17                  21
+  --                         18                  6
+  --                         19                  14
+  --                         20                  22
+  --                         21                  7
+  --                         22                  15
+  --                         23                  23  
+  ---------------------------------------------------------------------------------------
+
   p_reorder_array : PROCESS(deinterleaved_arr)
   BEGIN
     FOR i IN 0 TO 2*c_nof_bf_modules-1 LOOP