hub_test: Add MBS trigger output ports

Add a test trigger signal that corresponds to the microslice timing.
Output the signal to the CRI's four coaxial (U.FL) LVDS connectors. This
can be used for investigations with a scope.

diff --git a/hub_test/constrs/hub_test.xdc b/hub_test/constrs/hub_test.xdc
index 67e2c8dadd7c3324c8bebc2e8c2c9d07e9d6ec16..b165f3302ad69fc0c942988eb1852a153b2507cf 100644 (file)
--- a/hub_test/constrs/hub_test.xdc
+++ b/hub_test/constrs/hub_test.xdc
@@ -22,6 +22,18 @@ set_property IOSTANDARD LVTTL [get_ports SCL]
 set_property PACKAGE_PIN V14 [get_ports SDA]
 set_property IOSTANDARD LVTTL [get_ports SDA]
 
+set_property PACKAGE_PIN AU17 [get_ports TRG_OUT_0_P]
+set_property IOSTANDARD LVDS [get_ports TRG_OUT_0_P]
+
+set_property PACKAGE_PIN P34 [get_ports TRG_OUT_1_P]
+set_property IOSTANDARD LVDS [get_ports TRG_OUT_1_P]
+
+set_property PACKAGE_PIN G17 [get_ports TRG_OUT_2_P]
+set_property IOSTANDARD LVDS [get_ports TRG_OUT_2_P]
+
+set_property PACKAGE_PIN AT29 [get_ports TRG_OUT_3_P]
+set_property IOSTANDARD LVDS [get_ports TRG_OUT_3_P]
+
 set_property LOC GTHE3_CHANNEL_X0Y8  [get_cells -hierarchical -filter {NAME =~ *THE_MEDIA_4_PCSB*gen_channel_container[2].*gen_gthe3_channel_inst[0].GTHE3_CHANNEL_PRIM_INST}]
 set_property LOC GTHE3_CHANNEL_X0Y9  [get_cells -hierarchical -filter {NAME =~ *THE_MEDIA_4_PCSB*gen_channel_container[2].*gen_gthe3_channel_inst[1].GTHE3_CHANNEL_PRIM_INST}]
 set_property LOC GTHE3_CHANNEL_X0Y10 [get_cells -hierarchical -filter {NAME =~ *THE_MEDIA_4_PCSB*gen_channel_container[2].*gen_gthe3_channel_inst[2].GTHE3_CHANNEL_PRIM_INST}]

diff --git a/hub_test/src/hub_test.vhd b/hub_test/src/hub_test.vhd
index 791c845c35db235d4c6514b7c13dfe4c45a7e7f5..48c12ea2377b4253d1bfea83954078635dcef7b3 100644 (file)
--- a/hub_test/src/hub_test.vhd
+++ b/hub_test/src/hub_test.vhd
@@ -27,7 +27,16 @@ entity hub_test is
         MPOD_RESET_N : out   std_logic_vector(3 downto 0);
 
         SDA          : inout std_logic;
-        SCL          : inout std_logic
+        SCL          : inout std_logic;
+
+        TRG_OUT_0_P  : out   std_logic;
+        TRG_OUT_0_N  : out   std_logic;
+        TRG_OUT_1_P  : out   std_logic;
+        TRG_OUT_1_N  : out   std_logic;
+        TRG_OUT_2_P  : out   std_logic;
+        TRG_OUT_2_N  : out   std_logic;
+        TRG_OUT_3_P  : out   std_logic;
+        TRG_OUT_3_N  : out   std_logic
     );
 end entity hub_test;
 
@@ -153,6 +162,12 @@ architecture behavioral of hub_test is
     attribute KEEP of hub_data_address_sender : signal is "true";
     attribute KEEP of hub_data_seqnmbr : signal is "true";
     attribute KEEP of hub_data_length : signal is "true";
+
+    signal usrclk : std_logic;
+
+    constant MS_PERIOD_COUNTS : integer := 10240; -- assuming clock with 10 ns period
+    signal ms_count : integer range 0 to MS_PERIOD_COUNTS - 1 := 0;
+    signal trg_out : std_logic := '0';
 begin
     MPOD_RESET_N <= "1111";
 
@@ -262,6 +277,54 @@ begin
         CTRL_DEBUG        => open
     );
 
+    usrclk <= med2int_i(4).clk_half;
+
+    -- Create a 100 ns test pulse for debugging of microslice timing
+    process (usrclk) is
+    begin
+        if rising_edge(usrclk) then
+            if ms_count = MS_PERIOD_COUNTS - 1 then
+                ms_count <= 0;
+            else
+                ms_count <= ms_count + 1;
+            end if;
+            if ms_count < 10 then
+                trg_out <= '1';
+            else
+                trg_out <= '0';
+            end if;
+        end if;
+    end process;
+
+
+    OBUFDS_TRG_OUT_0 : OBUFDS
+    port map (
+        O  => TRG_OUT_0_P,
+        OB => TRG_OUT_0_N,
+        I  => trg_out
+    );
+
+    OBUFDS_TRG_OUT_1 : OBUFDS
+    port map (
+        O  => TRG_OUT_1_P,
+        OB => TRG_OUT_1_N,
+        I  => trg_out
+    );
+
+    OBUFDS_TRG_OUT_2 : OBUFDS
+    port map (
+        O  => TRG_OUT_2_P,
+        OB => TRG_OUT_2_N,
+        I  => trg_out
+    );
+
+    OBUFDS_TRG_OUT_3 : OBUFDS
+    port map (
+        O  => TRG_OUT_3_P,
+        OB => TRG_OUT_3_N,
+        I  => trg_out
+    );
+
 
     THE_MEDIA_4_PCSC : entity work.med_xcku_sfp_sync_4
     generic map (