diff --git a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one.vhd b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one.vhd
index cef00a959f44a6bb15c1c6d5fc8c70edbc325092..e38b78de43927f210ac0adc716159bb7b180f974 100644
--- a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one.vhd
+++ b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one.vhd
@@ -107,13 +107,13 @@ ARCHITECTURE tb OF tb_lofar2_unb2b_sdp_station_xsub_one IS
   TYPE t_real_arr IS ARRAY (INTEGER RANGE <>) OF REAL; 
 
   -- MM  
-  CONSTANT c_mm_file_reg_bsn_source_v2      : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SOURCE_V2";
-  CONSTANT c_mm_file_reg_bsn_scheduler_wg   : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SCHEDULER";
-  CONSTANT c_mm_file_reg_diag_wg            : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_WG";
-  CONSTANT c_mm_file_ram_st_sst             : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_ST_SST";
-  CONSTANT c_mm_file_reg_crosslets_info     : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_CROSSLETS_INFO";
-  CONSTANT c_mm_file_reg_bsn_scheduler_xsub : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SYNC_SCHEDULER_XSUB";
-  CONSTANT c_mm_file_ram_st_xsq             : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_ST_XSQ";
+  CONSTANT c_mm_file_reg_bsn_source_v2           : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SOURCE_V2";
+  CONSTANT c_mm_file_reg_bsn_scheduler_wg        : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SCHEDULER";
+  CONSTANT c_mm_file_reg_diag_wg                 : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_WG";
+  CONSTANT c_mm_file_ram_st_sst                  : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_ST_SST";
+  CONSTANT c_mm_file_reg_crosslets_info          : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_CROSSLETS_INFO";
+  CONSTANT c_mm_file_reg_bsn_sync_scheduler_xsub : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SYNC_SCHEDULER_XSUB";
+  CONSTANT c_mm_file_ram_st_xsq                  : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_ST_XSQ";
 
   -- Tb
   SIGNAL tb_end              : STD_LOGIC := '0';
@@ -286,10 +286,10 @@ BEGIN
     mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_wg, 0, c_bsn_start_wg, tb_clk);  -- first write low then high part
     mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_wg, 1,              0, tb_clk);  -- assume v_bsn < 2**31-1
     -- bsn_scheduler_xsub
-    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 1, c_ctrl_interval_size, tb_clk);  -- Interval size
-    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 2,       c_bsn_start_wg, tb_clk);  -- first write low then high part
-    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 3,                    0, tb_clk);  -- assume v_bsn < 2**31-1
-    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 0,                    1, tb_clk);  -- enable
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_sync_scheduler_xsub, 1, c_ctrl_interval_size, tb_clk);  -- Interval size
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_sync_scheduler_xsub, 2,       c_bsn_start_wg, tb_clk);  -- first write low then high part
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_sync_scheduler_xsub, 3,                    0, tb_clk);  -- assume v_bsn < 2**31-1
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_sync_scheduler_xsub, 0,                    1, tb_clk);  -- enable
 
     -- Wait for enough WG data and start of sync interval
     
diff --git a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one_xst_offload.vhd b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one_xst_offload.vhd
index 723dd616251ae04fe207abe9e7c7e0e32723f92c..fc24b687fddfaee847726ec8b8e5690f254aa374 100644
--- a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one_xst_offload.vhd
+++ b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one_xst_offload.vhd
@@ -77,9 +77,9 @@ ARCHITECTURE tb OF tb_lofar2_unb2b_sdp_station_xsub_one_xst_offload IS
   CONSTANT c_ctrl_interval_size  : NATURAL := c_nof_clk_per_sync;
 
   -- MM  
-  CONSTANT c_mm_file_reg_bsn_source_v2      : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SOURCE_V2";
-  CONSTANT c_mm_file_reg_stat_enable_xst    : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_STAT_ENABLE_XST";
-  CONSTANT c_mm_file_reg_bsn_scheduler_xsub : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SYNC_SCHEDULER_XSUB";
+  CONSTANT c_mm_file_reg_bsn_source_v2           : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SOURCE_V2";
+  CONSTANT c_mm_file_reg_stat_enable_xst         : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_STAT_ENABLE_XST";
+  CONSTANT c_mm_file_reg_bsn_sync_scheduler_xsub : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SYNC_SCHEDULER_XSUB";
 
   -- Tb
   SIGNAL tb_end              : STD_LOGIC := '0';
@@ -219,10 +219,10 @@ BEGIN
     ----------------------------------------------------------------------------
     -- Enable xsub
     ----------------------------------------------------------------------------
-    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 1, c_ctrl_interval_size, tb_clk);  -- Interval size
-    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 2,                    1, tb_clk);  -- first write low then high part
-    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 3,                    0, tb_clk);  -- assume v_bsn < 2**31-1
-    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 0,                    1, tb_clk);  -- enable
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_sync_scheduler_xsub, 1, c_ctrl_interval_size, tb_clk);  -- Interval size
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_sync_scheduler_xsub, 2,                    1, tb_clk);  -- first write low then high part
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_sync_scheduler_xsub, 3,                    0, tb_clk);  -- assume v_bsn < 2**31-1
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_sync_scheduler_xsub, 0,                    1, tb_clk);  -- enable
     ----------------------------------------------------------------------------
     -- Offload enable
     ----------------------------------------------------------------------------
diff --git a/applications/lofar2/libraries/sdp/src/vhdl/sdp_crosslets_subband_select.vhd b/applications/lofar2/libraries/sdp/src/vhdl/sdp_crosslets_subband_select.vhd
index ef1f8c9fa55915372aa0a96300df36465b723b18..0af185f5fbff6ab24243bfb6a028d45f6ad296ed 100644
--- a/applications/lofar2/libraries/sdp/src/vhdl/sdp_crosslets_subband_select.vhd
+++ b/applications/lofar2/libraries/sdp/src/vhdl/sdp_crosslets_subband_select.vhd
@@ -42,7 +42,7 @@ USE work.sdp_pkg.ALL;
 ENTITY sdp_crosslets_subband_select IS
   GENERIC (
     g_N_crosslets : NATURAL := c_sdp_N_crosslets;
-    g_ctrl_interval_size_min : NATURAL := c_sdp_xst_nof_blk_per_sync_min
+    g_ctrl_interval_size_min : NATURAL := c_sdp_xst_nof_clk_per_sync_min
   );
   PORT (
     dp_clk        : IN  STD_LOGIC;
diff --git a/applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd b/applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd
index 34b60a15799eb9df0f09cf094161f44206c08df7..cbfaec980e9840102d6fb090bb7f795487fae2f4 100644
--- a/applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd
+++ b/applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd
@@ -325,8 +325,7 @@ PACKAGE sdp_pkg is
                                                      init_sl  => '0');
   CONSTANT c_sdp_crosslets_info_reg_w : NATURAL := c_sdp_mm_reg_crosslets_info.nof_dat*c_sdp_mm_reg_crosslets_info.dat_w;
 
-  CONSTANT c_sdp_xst_nof_blk_per_sync_max : NATURAL := 200000;
-  CONSTANT c_sdp_xst_nof_blk_per_sync_min : NATURAL := 19530;
+  CONSTANT c_sdp_xst_nof_clk_per_sync_min : NATURAL := (c_sdp_f_adc_MHz *10**6) / 10; -- 0.1 second
 
   -- XSUB MM address widths
   CONSTANT c_sdp_reg_crosslets_info_addr_w          : NATURAL := c_sdp_mm_reg_crosslets_info.adr_w;