From fa87694d0ef600a753c5700e31b1254c90c14bf3 Mon Sep 17 00:00:00 2001
From: Reinier van der Walle <walle@astron.nl>
Date: Tue, 1 Sep 2020 16:33:18 +0200
Subject: [PATCH] Added the check if g_check_input_sync = True for using the
input sync to reset the counter.
---
libraries/base/dp/src/vhdl/dp_block_gen_valid_arr.vhd | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/libraries/base/dp/src/vhdl/dp_block_gen_valid_arr.vhd b/libraries/base/dp/src/vhdl/dp_block_gen_valid_arr.vhd
index a8ae4ed721..530ab7dff4 100644
--- a/libraries/base/dp/src/vhdl/dp_block_gen_valid_arr.vhd
+++ b/libraries/base/dp/src/vhdl/dp_block_gen_valid_arr.vhd
@@ -136,9 +136,8 @@
-- . Using g_check_input_sync=True is similar to using a dp_sync_checker in
-- front of this dp_block_gen_valid_arr. However the advantage of
-- dp_sync_checker is that it provides monitoring and control via MM.
--- . If snk_in.sync is always '0', sync out is generated at g_nof_blk_per_sync.
--- Otherwise, the output sync is also derived from snk_in.sync to allow for
--- a fractional amount of blocks per sync period.
+-- . If g_check_input_sync = True, te output sync is derived from snk_in.sync to
+-- allow for a fractional amount of blocks per sync period.
LIBRARY IEEE, common_lib;
USE IEEE.STD_LOGIC_1164.ALL;
@@ -274,14 +273,14 @@ BEGIN
-- maintain blk_cnt for output sync interval, the blk_cnt is the local bsn that wraps at every sync
IF r.blk_cnt>=g_nof_blk_per_sync-1 THEN
nxt_r.blk_cnt <= 0;
- ELSIF snk_in.sync = '1' THEN
+ ELSIF g_check_input_sync AND snk_in.sync = '1' THEN
nxt_r.blk_cnt <= 1;
ELSE
nxt_r.blk_cnt <= r.blk_cnt+1;
END IF;
-- create local sync and pass on input bsn at local sync
- IF r.blk_cnt=0 OR snk_in.sync = '1' THEN -- output sync starts at first input valid
+ IF r.blk_cnt=0 OR (g_check_input_sync AND snk_in.sync = '1') THEN -- output sync starts at first input valid
nxt_r.reg_sosi.sync <= '1'; -- output sync for this block
nxt_r.reg_sosi.bsn <= in_sosi.bsn; -- output input bsn at sync
ELSE
--
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