*** empty log message ***

diff --git a/trb_net16_api_ipu_streaming.vhd b/trb_net16_api_ipu_streaming.vhd
index bc10f3ab92ec37d1ceca272633584e7d17efe35b..81c2d972530f06c43447b59bfe17e023e085953e 100644 (file)
--- a/trb_net16_api_ipu_streaming.vhd
+++ b/trb_net16_api_ipu_streaming.vhd
@@ -28,27 +28,29 @@ entity trb_net16_api_ipu_streaming is
     CTS_REPLY_READ_IN         : in  std_logic;
 
     --Event information coming from CTS
-    CTS_NUMBER_OUT            : out std_logic_vector (15 downto 0);
-    CTS_CODE_OUT              : out std_logic_vector (7  downto 0);
-    CTS_INFORMATION_OUT       : out std_logic_vector (7  downto 0);
-    CTS_READOUT_TYPE_OUT      : out std_logic_vector (3  downto 0);
-    CTS_START_READOUT_OUT     : out std_logic;
+    CTS_NUMBER_OUT            : out std_logic_vector (15 downto 0); --valid while start_readout is high
+    CTS_CODE_OUT              : out std_logic_vector (7  downto 0); --valid while start_readout is high
+    CTS_INFORMATION_OUT       : out std_logic_vector (7  downto 0); --valid while start_readout is high
+    CTS_READOUT_TYPE_OUT      : out std_logic_vector (3  downto 0); --valid while start_readout is high
+    CTS_START_READOUT_OUT     : out std_logic;  --goes high after request is transported through hub, goes low
+                                                --after user send information to cts.
 
     --Information sent to CTS
     --status data, equipped with DHDR
     CTS_DATA_IN             : in  std_logic_vector (31 downto 0);
     CTS_DATAREADY_IN        : in  std_logic;
-    CTS_READOUT_FINISHED_IN : in  std_logic;      --no more data, end transfer, send TRM
+    CTS_READOUT_FINISHED_IN : in  std_logic;      --no more data, end transfer, send TRM, should be high 1 CLK cycle
     CTS_READ_OUT            : out std_logic;
-    CTS_LENGTH_IN           : in  std_logic_vector (15 downto 0);
-    CTS_ERROR_PATTERN_IN    : in  std_logic_vector (31 downto 0);
+    CTS_LENGTH_IN           : in  std_logic_vector (15 downto 0); --valid when raising dataready for first time
+    CTS_STATUS_BITS_IN      : in  std_logic_vector (31 downto 0); --valid when readout_finished is high
 
     -- Data from Frontends
-    FEE_DATA_OUT           : out std_logic_vector (31 downto 0);
-    FEE_DATAREADY_OUT      : out std_logic;
+    FEE_DATA_OUT           : out std_logic_vector (31 downto 0);  --data from FEE
+    FEE_DATAREADY_OUT      : out std_logic;  --data on data_out is valid
     FEE_READ_IN            : in  std_logic;  --must be high when idle, otherwise you will never get a dataready
-    FEE_STATUS_BITS_OUT    : out std_logic_vector (31 downto 0);
-    FEE_BUSY_OUT           : out std_logic;
+    FEE_STATUS_BITS_OUT    : out std_logic_vector (31 downto 0); --valid after busy is low again
+    FEE_BUSY_OUT           : out std_logic;  --goes high shortly after start_readout; goes low when last dataword from FEE
+                                             --has been read.
 
     MY_ADDRESS_IN         : in  std_logic_vector (15 downto 0);
     CTRL_SEQNR_RESET      : in std_logic;
@@ -64,6 +66,7 @@ architecture trb_net16_api_ipu_streaming_arch of trb_net16_api_ipu_streaming is
   signal APL_CTS_DATAREADY_OUT  : std_logic;
   signal APL_CTS_READ_IN        : std_logic;
   signal APL_CTS_SEQNR_OUT      : std_logic_vector(7 downto 0);
+  signal APL_CTS_ERROR_PATTERN_IN : std_logic_vector(31 downto 0);
 
   signal APL_FEE_DTYPE_IN         : std_logic_vector(3 downto 0);
   signal APL_FEE_ERROR_PATTERN_IN : std_logic_vector(31 downto 0);
@@ -259,7 +262,7 @@ begin
       --will be low every second cycle due to 32bit -> 16bit conversion
       IPU_READ_OUT           => CTS_READ_OUT,
       IPU_LENGTH_IN          => CTS_LENGTH_IN,
-      IPU_ERROR_PATTERN_IN   => CTS_ERROR_PATTERN_IN,
+      IPU_ERROR_PATTERN_IN   => CTS_STATUS_BITS_IN,
 
       STAT_DEBUG             => open
       );