diff --git a/libraries/base/dp/src/vhdl/dp_bsn_source_v2.vhd b/libraries/base/dp/src/vhdl/dp_bsn_source_v2.vhd
index ea00a86affbdb354944d0770013f17b735a161b4..f73edbf022860bb34582210adf067f6f0e8fab46 100644
--- a/libraries/base/dp/src/vhdl/dp_bsn_source_v2.vhd
+++ b/libraries/base/dp/src/vhdl/dp_bsn_source_v2.vhd
@@ -59,10 +59,10 @@ ENTITY dp_bsn_source_v2 IS
dp_on_status : OUT STD_LOGIC;
- bsn_init : IN STD_LOGIC_VECTOR(g_bsn_w-1 DOWNTO 0) := (OTHERS=>'0');
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');
bsn_time_offset : IN STD_LOGIC_VECTOR(g_bsn_time_offset_w-1 DOWNTO 0) := (OTHERS=>'0');
- current_bsn_time_offset : OUT STD_LOGIC_VECTOR(g_bsn_time_offset_w-1 DOWNTO 0);
+ current_bsn_time_offset : OUT STD_LOGIC_VECTOR(g_bsn_time_offset_w-1 DOWNTO 0); -- output for monitoring purpose in test bench.
src_out : OUT t_dp_sosi -- only uses sync, bsn[], valid, sop and eop
);
@@ -120,7 +120,7 @@ BEGIN
dp_on_status <= i_dp_on_status;
current_bsn_time_offset <= i_current_bsn_time_offset;
- p_state : PROCESS(state, prev_state, dp_on, dp_on_pps, pps, block_size_cnt, clk_cnt, bsn_init, i_src_out, i_dp_on_status, bsn_time_offset_cnt, bsn_time_offset)
+ p_state : PROCESS(state, i_src_out, block_size_cnt, clk_cnt, sync, i_dp_on_status, bsn_time_offset_cnt, bsn_time_offset, nof_clk_per_sync, bsn_init, dp_on, dp_on_pps, pps, prev_state)
BEGIN
nxt_state <= state;
nxt_src_out <= i_src_out;
@@ -153,7 +153,7 @@ BEGIN
nxt_clk_cnt <= (OTHERS=>'0');
IF dp_on = '1' THEN
IF dp_on_pps = '1' THEN
- nxt_sync <= '1';
+ nxt_sync <= '1'; -- ensure issue sync at first sync interval for start at PPS.
IF pps = '1' THEN
IF UNSIGNED(bsn_time_offset) = 0 THEN
nxt_state <= s_dp_on_sop;
@@ -181,7 +181,6 @@ BEGIN
nxt_state <= s_dp_on;
nxt_block_size_cnt <= (OTHERS=>'0');
IF prev_state = s_dp_on_eop THEN
- -- nxt_src_out.bsn(g_bsn_w-1 DOWNTO 0) <= INCR_UVEC(i_src_out.bsn(g_bsn_w-1 DOWNTO 0), 1);
nxt_src_out.bsn <= INCR_DP_BSN(i_src_out.bsn, 1, g_bsn_w);
END IF;
IF sync = '1' THEN
diff --git a/libraries/base/dp/tb/vhdl/tb_dp_bsn_source_v2.vhd b/libraries/base/dp/tb/vhdl/tb_dp_bsn_source_v2.vhd
index 48d625c9a5453e34870b0b8cea795cb1da5dcaba..2e701d81502e0eb51d9ced01318b5187a8fde452 100644
--- a/libraries/base/dp/tb/vhdl/tb_dp_bsn_source_v2.vhd
+++ b/libraries/base/dp/tb/vhdl/tb_dp_bsn_source_v2.vhd
@@ -19,6 +19,16 @@
--
-------------------------------------------------------------------------------
+-- Author: P. Donker
+-- Verify if eop and sop come in pairs and if sync is at sop and at expected_sync puls.
+-- The tb is using a SSN (second sample number) and BSN (block sample number) generator as reference
+-- for the test, it uses g_pps_interval and g_block_size for generator timing settings.
+-- Start/Stop BSN source tests:
+-- 1) test 1x asynchronously (dp_on_pps='0') without automatic check, check visualy in wave window.
+-- 2) test 3x synchronously (dp_on_pps='1') with automatic check.
+--
+-- [doc] = https://support.astron.nl/confluence/display/L2M/L6+FWLIB+Design+Document%3A+BSN+source+with+offset
+
-- Usage:
-- > as 10
-- > run -all
diff --git a/libraries/base/dp/tb/vhdl/tb_mms_dp_bsn_source_v2.vhd b/libraries/base/dp/tb/vhdl/tb_mms_dp_bsn_source_v2.vhd
index 22e323b0ac820572ab9eb6a1b560a5c52729b253..88eda9967bd5ab232c057bde57d50bc998f610af 100644
--- a/libraries/base/dp/tb/vhdl/tb_mms_dp_bsn_source_v2.vhd
+++ b/libraries/base/dp/tb/vhdl/tb_mms_dp_bsn_source_v2.vhd
@@ -19,10 +19,11 @@
--
-------------------------------------------------------------------------------
-- Purpose:
--- . Test bench for mms_dp_bsn_source
+-- . Test bench for mms_dp_bsn_source_v2
-- Description:
-- . Verify DP on, off via MM
-- . Verify captured BSN via MM during a sync interval
+-- . Verify changing of BSN_time_offset
--
-- Usage:
-- > as 10