Changeset 10742 for firmware/FTM

Timestamp:

05/18/11 17:20:01 (14 years ago)

Author:

vogler

Message:

FTM Timing counters added

Location:

firmware/FTM

Files:

• Timing_counters (added)
• Timing_counters/Timing_counter.vhd (added)
• Timing_counters/Timing_counter_tb.vhd (added)
• ftm_definitions.vhd (modified) (2 diffs)

firmware/FTM/ftm_definitions.vhd

@@ -48 +48 @@
 --
 -- kw 28.04.: changed SD_SINGLE_WORD_SIZE to X"002", added W5300_S0_KPALVTR (keep alive)
+--
+-- modified: Patrick Vogler, May 18 2011
+-- constants for light pulser and timing counter added
 --
 ----------------------------------------------------------------------------------
@@ -387 +390 @@
   );
 
-  -- Light pulser interface
-  constant low_PLC : integer := 16;   -- minimal pulse duration in units of 4 ns
-  constant width_PLC : integer := 6;  -- counter width pulse duration 
-
+  --======================================================================================
+  -- Constants for Light pulser interface width (8ns+value*4ns)
+  --======================================================================================
+  -- constant low_PLC : integer := 16;   -- minimal pulse duration in units of 4 ns
+  -- constant width_PLC : integer := 6;  -- counter width pulse duration 
+  constant FLD_PULSE_LENGTH       : integer := 12;       
+  constant FLD_MIN_FREQ_DIV       : integer := 25;      
+  constant FLD_FD_MULT            : integer := 50;       
+  constant FLD_FD_MAX_RANGE       : integer := 64;     
+  
   -- Timing counter
-  --  constant tc_width : integer := 48;    -- width (number of bits) of timing counter
-  --  constant zero : unsigned (tc_width - 1 downto 0) := (others => '0');  
-
+  constant TC_WIDTH         : integer := 48;
+  constant PRECOUNT_WIDTH   : integer := 8;
+  constant PRECOUNT_DIVIDER : integer := 50;
+  
   --======================================================================================
   -- Constants for calibration and pedestal triggers generation