diff --git a/applications/apertif/designs/apertif_unb1_correlator/src/vhdl/apertif_unb1_correlator.vhd b/applications/apertif/designs/apertif_unb1_correlator/src/vhdl/apertif_unb1_correlator.vhd
index e6c4e722de017815f9a30464b186f72202be6e7d..1ce9301ebc4ffd16bcbffaac6af0ca059a0ce5cf 100644
--- a/applications/apertif/designs/apertif_unb1_correlator/src/vhdl/apertif_unb1_correlator.vhd
+++ b/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