Add bs_new_sync_interval.

libraries/base/dp/src/vhdl/dp_bsn_source_v2.vhd

@@ -76,7 +76,8 @@ ENTITY dp_bsn_source_v2 IS
     dp_on_pps               : IN  STD_LOGIC;
 
     dp_on_status            : OUT STD_LOGIC;  -- = src_out.valid
-    bs_restart              : OUT STD_LOGIC;  -- = src_out.sop for first sop after dp_on went high
+    bs_restart              : OUT STD_LOGIC;  -- = src_out.sync for first sync after dp_on went high
+    bs_new_interval         : OUT STD_LOGIC;  -- = active during first src_out.sync interval
  
     nof_clk_per_sync        : IN  STD_LOGIC_VECTOR(c_word_w-1 DOWNTO 0) := TO_UVEC(g_nof_clk_per_sync, c_word_w);
     bsn_init                : IN  STD_LOGIC_VECTOR(g_bsn_w-1 DOWNTO 0) := (OTHERS=>'0');
@@ -107,7 +108,10 @@ ARCHITECTURE rtl OF dp_bsn_source_v2 IS
   SIGNAL i_src_out          : t_dp_sosi := c_dp_sosi_init;
   SIGNAL nxt_src_out        : t_dp_sosi;
  
-  SIGNAL nxt_bs_restart     : STD_LOGIC;
+  SIGNAL i_bs_restart        : STD_LOGIC;
+  SIGNAL nxt_bs_restart      : STD_LOGIC;
+  SIGNAL i_bs_new_interval   : STD_LOGIC;
+  SIGNAL reg_bs_new_interval : STD_LOGIC;
 
   SIGNAL nxt_bsn_time_offset_cnt : STD_LOGIC_VECTOR(g_bsn_time_offset_w-1 DOWNTO 0);
   SIGNAL bsn_time_offset_cnt     : STD_LOGIC_VECTOR(g_bsn_time_offset_w-1 DOWNTO 0);
@@ -121,6 +125,8 @@ BEGIN
 
   src_out <= i_src_out;
   dp_on_status <= i_src_out.valid;
+  bs_restart <= i_bs_restart;
+  bs_new_interval <= i_bs_new_interval;
 
   p_state : PROCESS(sync, sync_size_cnt, nof_clk_per_sync,
                     state, i_src_out, block_size_cnt, bsn_time_offset_cnt,
@@ -232,6 +238,10 @@ BEGIN
   -- to have bs_restart at first src_out.sync and src_out.sop.
   nxt_bs_restart <= nxt_src_out.valid AND NOT i_src_out.valid;
 
+  i_bs_new_interval <= '1' WHEN i_bs_restart = '1' ELSE
+                       '0' WHEN i_src_out.sync = '1' ELSE
+                       reg_bs_new_interval;
+
   p_clk : PROCESS(rst, clk)
   BEGIN
     IF rst='1' THEN
@@ -241,7 +251,8 @@ BEGIN
       sync_size_cnt       <= (OTHERS=>'0');
       sync                <= '0';
       block_size_cnt      <= (OTHERS=>'0');
-      bs_restart          <= '0';
+      i_bs_restart        <= '0';
+      reg_bs_new_interval <= '0';
       bsn_time_offset_cnt <= (OTHERS=>'0');
     ELSIF rising_edge(clk) THEN
       prev_state          <= state;
@@ -250,7 +261,8 @@ BEGIN
       sync_size_cnt       <= nxt_sync_size_cnt;
       sync                <= nxt_sync;
       block_size_cnt      <= nxt_block_size_cnt;
-      bs_restart          <= nxt_bs_restart;
+      i_bs_restart        <= nxt_bs_restart;
+      reg_bs_new_interval <= i_bs_new_interval;
       bsn_time_offset_cnt <= nxt_bsn_time_offset_cnt;
     END IF;
   END PROCESS;

libraries/base/dp/src/vhdl/mms_dp_bsn_source_v2.vhd

@@ -52,7 +52,8 @@ ENTITY mms_dp_bsn_source_v2 IS
     -- Streaming clock domain
     bs_sosi           : OUT t_dp_sosi;
 
-    bs_restart           : OUT STD_LOGIC  -- pulse to indicate if the bsn_source has restarted
+    bs_restart        : OUT STD_LOGIC;  -- pulse to indicate if the bsn_source has restarted
+    bs_new_interval   : OUT STD_LOGIC   -- level to indicate first sync interval if the bsn_source has restarted
   );
 END mms_dp_bsn_source_v2;
 
@@ -116,6 +117,7 @@ BEGIN
     dp_on_pps               => dp_on_pps,
     dp_on_status            => dp_on_status,
     bs_restart              => bs_restart,
+    bs_new_interval         => bs_new_interval,
     bsn_init                => bsn_init,
     nof_clk_per_sync        => nof_clk_per_sync,
     bsn_time_offset         => bsn_time_offset,

libraries/base/dp/tb/vhdl/tb_dp_bsn_source_v2.vhd

@@ -124,6 +124,8 @@ ARCHITECTURE tb OF tb_dp_bsn_source_v2 IS
   SIGNAL dp_on_pps       : STD_LOGIC := '0';
   SIGNAL dp_on_status    : STD_LOGIC;
   SIGNAL bs_restart      : STD_LOGIC;
+  SIGNAL bs_new_interval : STD_LOGIC;
+  SIGNAL tb_new_interval : STD_LOGIC := '0';
   SIGNAL bsn_init        : STD_LOGIC_VECTOR(c_bsn_w-1 DOWNTO 0) := (OTHERS=>'0');
   SIGNAL bsn_time_offset : STD_LOGIC_VECTOR(c_bsn_time_offset_w-1 DOWNTO 0) := (OTHERS=>'0');
   SIGNAL bs_sosi         : t_dp_sosi;
@@ -304,6 +306,23 @@ BEGIN
     END IF;
   END PROCESS;
 
+  p_verify_bs_new_interval : PROCESS(clk)
+  BEGIN
+    IF rising_edge(clk) THEN
+      IF bs_restart = '1' THEN
+        ASSERT bs_new_interval = '1' REPORT "Wrong begin of bs_new_interval" SEVERITY ERROR;
+        tb_new_interval <= '1';
+      ELSIF bs_sosi.sync = '1' THEN
+        ASSERT bs_new_interval = '0' REPORT "Wrong end of bs_new_interval" SEVERITY ERROR;
+        tb_new_interval <= '0';
+      ELSIF tb_new_interval = '1' THEN
+        ASSERT bs_new_interval = '1' REPORT "Wrong level during bs_new_interval" SEVERITY ERROR;
+      ELSE
+        ASSERT bs_new_interval = '0' REPORT "Unexpected bs_new_interval" SEVERITY ERROR;
+      END IF;
+    END IF;
+  END PROCESS;
+
   -----------------------------------------------------------------------------
   -- DUT: dp_bsn_source_v2
   -----------------------------------------------------------------------------
@@ -324,7 +343,8 @@ BEGIN
     dp_on_pps        => dp_on_pps,
 
     dp_on_status     => dp_on_status,  -- = src_out.valid
-    bs_restart       => bs_restart,    -- = src_out.sop for first sop after dp_on went high
+    bs_restart       => bs_restart,    -- = src_out.sync for first sync after dp_on went high
+    bs_new_interval  => bs_new_interval,  -- active during first src_out.sync interval
 
     bsn_init         => bsn_init,
     bsn_time_offset  => bsn_time_offset,