From bc8c549e3b3a98be2dccd129c07b827dec8f4c81 Mon Sep 17 00:00:00 2001
From: Eric Kooistra <kooistra@astron.nl>
Date: Wed, 13 Mar 2024 13:03:03 +0100
Subject: [PATCH] Prepare for g_use_aligner_at_first_node, use true to have no
functional change yet.
---
.../base/dp/src/vhdl/dp_bsn_align_v2.vhd | 146 +++++++++++++-----
.../base/dp/src/vhdl/mmp_dp_bsn_align_v2.vhd | 19 ++-
.../base/dp/tb/vhdl/tb_dp_bsn_align_v2.vhd | 16 +-
.../dp/tb/vhdl/tb_mmp_dp_bsn_align_v2.vhd | 8 +-
4 files changed, 135 insertions(+), 54 deletions(-)
diff --git a/libraries/base/dp/src/vhdl/dp_bsn_align_v2.vhd b/libraries/base/dp/src/vhdl/dp_bsn_align_v2.vhd
index eae4c4d60f..4653c6ccba 100644
--- a/libraries/base/dp/src/vhdl/dp_bsn_align_v2.vhd
+++ b/libraries/base/dp/src/vhdl/dp_bsn_align_v2.vhd
@@ -29,14 +29,72 @@
-- replacement data. The output streams are paced by the block rate of
-- input 0. The user has to read the block within the block period.
--
+-- The aligner can align g_nof_streams that all arrive within a latency
+-- of g_bsn_latency_max after the local stream at index 0. The aligner
+-- can also be used in a chain of aligners, whereby each aligner typically
+-- has the local input and one remote input and the remote input is the
+-- output of an upstream aligner. Then the latency on the last node in
+-- the chain will be within g_nof_aligners_max * g_bsn_latency_max.
+--
+-- The size of the circular buffer is c_buffer_nof_blocks and depends on the
+-- maximum latency. The c_buffer_nof_blocks has to a power of two to ease
+-- the control of the circular buffer. The lowest bits of the input block
+-- sequence number (BSN) are used as write block index into the circular
+-- buffer. The g_use_aligner_at_first_node can be useful to reduce the
+-- required circular buffer size just enough, such that the next power of two
+-- is only a feq blocks larger, instead of almost a factor two larger. This
+-- then may save a significant amount of block RAM.
+--
+-- In case of a chain of aligners then the circular buffer size depends on
+-- the latency of local input. The most remote input will only use a
+-- fraction of the buffer. Therefore more block RAM can be saved by using
+-- a smaller circular buffer size for signal inputs that are from more
+-- remote (i.e. that have passed through more upstream aligners).
+--
-- Features:
-- . The g_block_size <= block period, so supports input blocks arriving
-- with or without data valid gaps
-- . uses replacement data to replace lost input blocks and channel bit 0 as
-- lost_data flag
-- . uses replacement data to replace disabled input streams
--- . output block can be read in arbitrary order via g_use_mm_output = TRUE
--- . output block can be streamed via g_use_mm_output = FALSE
+-- . output block can be read in arbitrary order via g_use_mm_output = true
+-- . output block can be streamed via g_use_mm_output = false
+--
+-- Parameters:
+-- . g_nof_streams: number of input and output streams. Stream index 0 is
+-- the local stream. Streams index > 0 is for remote streams. The
+-- remote streams arrive later than the local stream, but within
+-- g_bsn_latency_max or within an integer multiple of g_bsn_latency_max.
+-- . g_bsn_latency_max: maximum travel latency of a remote block in number
+-- of block periods T_blk.
+-- . g_nof_aligners_max: Number of dp_bsn_align_v2 aligners in a chain.
+-- = 1 when only align at last node, or
+-- > 1 when align at every intermediate node in a chain of nodes, and then
+-- g_nof_aligners_max should equal the number of nodes for
+-- chain_node_index range. The g_nof_aligners_max is the number of
+-- nodes in the chain including the first node.
+-- . g_use_aligner_at_first_node: when true use g_bsn_latency_max at first
+-- node as well, else use c_bsn_latency_first_node = 0 for immediate
+-- output from first node in a chain of nodes. Only used when
+-- g_nof_aligners_max > 1. The g_use_aligner_at_first_node setting only
+-- affects the latency along the chain, and therefore the required
+-- size of the circular buffer. If the circular buffer is large enough
+-- anyway, then the g_use_aligner_at_first_node setting is don't care,
+-- assuming that a little extra latency is don't care.
+--
+-- Inputs:
+-- . chain_node_index: Node index in chain of nodes. First node has index 0.
+-- In case of a ring of nodes the chain of nodes can range the whole ring,
+-- or only a part of the ring. The number of nodes in the chain is given
+-- by g_nof_aligners_max. Only used when g_nof_aligners_max > 1.
+-- . stream_en_arr: when '1' then align corresponding input stream, else
+-- replace data from corresponding inut stream by 0 and do not raise the
+-- lost data flag. Whether a stream is enabled or not has no effect on the
+-- aligner timing, it only sets the data to 0.
+--
+-- Outputs:
+-- . replace_cnt_en_arr: count number of lost data blocks per input stream,
+-- that got replaced by 0 value, per sync interval.
--
-- For more detailed description see:
-- https://support.astron.nl/confluence/display/L2M/L6+FWLIB+Design+Document%3A+BSN+aligner+v2
@@ -57,22 +115,23 @@ use work.dp_stream_pkg.all;
entity dp_bsn_align_v2 is
generic (
g_nof_streams : natural := 2; -- >= 2, number of input and output streams
- g_bsn_latency_max : natural := 2; -- maximum travel latency of a remote block in number of block periods T_blk
- g_nof_aligners_max : positive := 16; -- 1 when only align at last node, > 1 when align at every intermediate node
+ g_bsn_latency_max : natural := 2;
+ g_use_aligner_at_first_node : boolean := true;
+ g_nof_aligners_max : positive := 16;
g_block_size : natural := 1024; -- > 1, g_block_size=1 is not supported
g_bsn_w : natural := c_dp_stream_bsn_w; -- number of bits in sosi BSN
g_data_w : natural := 36; -- number of bits in sosi data
g_data_replacement_value : integer := 0; -- output sosi data value for missing input blocks
g_use_mm_output : boolean := false; -- output via MM or via streaming DP
- g_pipeline_input : natural := 1; -- >= 0, choose 0 for wires, choose 1 to ease timing closure of in_sosi_arr
- g_pipeline_output : natural := 1; -- >= 0, choose 0 for wires, choose 1 to ease timing closure of out_sosi_arr
+ g_pipeline_input : natural := 1; -- >= 0, 0 for wires, 1 to ease timing closure of in_sosi_arr
+ g_pipeline_output : natural := 1; -- >= 0, 0 for wires, 1 to ease timing closure of out_sosi_arr
g_rd_latency : natural := 2 -- 1 or 2, choose 2 to ease timing closure
);
port (
dp_rst : in std_logic;
dp_clk : in std_logic;
- node_index : in natural range 0 to g_nof_aligners_max - 1 := 0; -- only used when g_nof_aligners_max > 1
+ chain_node_index : in natural range 0 to g_nof_aligners_max - 1 := 0;
-- MM control
stream_en_arr : in std_logic_vector(g_nof_streams - 1 downto 0) := (others => '1');
@@ -81,19 +140,25 @@ entity dp_bsn_align_v2 is
-- Streaming input
in_sosi_arr : in t_dp_sosi_arr(g_nof_streams - 1 downto 0);
- -- Output via local MM interface in dp_clk domain, when g_use_mm_output = TRUE.
- mm_sosi : out t_dp_sosi; -- streaming information that signals that an output block can be read
- mm_copi : in t_mem_copi := c_mem_copi_rst; -- read access to output block, all output streams share same mm_copi
+ -- Output via local MM interface in dp_clk domain, when g_use_mm_output = true
+ -- . streaming information that signals that an output block can be read
+ mm_sosi : out t_dp_sosi;
+ -- . MM read access to output block, all output streams share same mm_copi
+ mm_copi : in t_mem_copi := c_mem_copi_rst;
mm_cipo_arr : out t_mem_cipo_arr(g_nof_streams - 1 downto 0);
- -- Output via streaming DP interface, when g_use_mm_output = FALSE.
+ -- Output via streaming DP interface, when g_use_mm_output = false.
out_sosi_arr : out t_dp_sosi_arr(g_nof_streams - 1 downto 0)
);
end dp_bsn_align_v2;
architecture rtl of dp_bsn_align_v2 is
+ constant c_bsn_latency_first_node : natural := sel_a_b(g_use_aligner_at_first_node, g_bsn_latency_max, 0);
+
-- Circular buffer per stream, size is next power of 2 that fits
- constant c_buffer_nof_blocks : natural := true_log_pow2(1 + g_nof_aligners_max * g_bsn_latency_max);
+ constant c_buffer_nof_blocks : natural := sel_a_b(g_nof_aligners_max = 1,
+ true_log_pow2(1 + g_bsn_latency_max),
+ true_log_pow2(1 + g_bsn_latency_max * (g_nof_aligners_max - 1) + c_bsn_latency_first_node));
constant c_ram_size : natural := c_buffer_nof_blocks * g_block_size;
constant c_ram_buf : t_c_mem := (latency => 1,
@@ -121,6 +186,7 @@ architecture rtl of dp_bsn_align_v2 is
-- State
type t_reg is record
+ ref_sosi : t_dp_sosi;
-- p_write_arr
wr_blk_pointer : natural;
wr_copi_arr : t_mem_copi_arr(g_nof_streams - 1 downto 0);
@@ -136,9 +202,12 @@ architecture rtl of dp_bsn_align_v2 is
rd_blk_pointer : integer; -- use integer to detect need to wrap to natural
rd_offset : std_logic_vector(c_ram_buf.adr_w - 1 downto 0);
rd_copi : t_mem_copi;
- fill_cipo_arr : t_mem_cipo_arr(g_nof_streams - 1 downto 0); -- used combinatorial to contain rd_cipo_arr from buffer or replacement data
- out_bsn : std_logic_vector(g_bsn_w - 1 downto 0); -- hold BSN until next sop, for easy view in Wave window
- out_channel_arr : t_channel_arr(g_nof_streams - 1 downto 0); -- hold channel until next sop per stream, for easy view in Wave window
+ fill_cipo_arr : t_mem_cipo_arr(g_nof_streams - 1 downto 0); -- used combinatorial to contain rd_cipo_arr
+ -- from buffer or replacement data
+ out_bsn : std_logic_vector(g_bsn_w - 1 downto 0); -- hold BSN until next sop, for easy view in Wave
+ -- window
+ out_channel_arr : t_channel_arr(g_nof_streams - 1 downto 0); -- hold channel until next sop per stream, for
+ -- easy view in Wave window
replace_cnt_en_arr : std_logic_vector(g_nof_streams - 1 downto 0);
end record;
@@ -148,14 +217,14 @@ architecture rtl of dp_bsn_align_v2 is
-- t_comb variable in p_comb, but then only the last assignment value will
-- be visible via the signal dbg_wires in the Wave window.
type t_comb is record
- ref_sosi : t_dp_sosi;
blk_pointer_slv : std_logic_vector(c_blk_pointer_w - 1 downto 0);
product_slv : std_logic_vector(c_product_w - 1 downto 0);
lost_data_flags_arr : std_logic_vector(g_nof_streams - 1 downto 0);
out_sosi_arr : t_dp_sosi_arr(g_nof_streams - 1 downto 0);
end record;
- constant c_reg_rst : t_reg := (0,
+ constant c_reg_rst : t_reg := (c_dp_sosi_rst,
+ 0,
(others => c_mem_copi_rst),
(others => (others => '0')),
(others => '0'),
@@ -171,11 +240,10 @@ architecture rtl of dp_bsn_align_v2 is
(others => (others => '0')),
(others => '0'));
- constant c_comb_rst : t_comb := (c_dp_sosi_rst,
- (others => '0'),
- (others => '0'),
- (others => '0'),
- (others => c_dp_sosi_rst));
+ constant c_comb_rst : t_comb := ((others => '0'),
+ (others => '0'),
+ (others => '0'),
+ (others => c_dp_sosi_rst));
-- State registers for p_comb
signal r : t_reg;
@@ -199,7 +267,6 @@ architecture rtl of dp_bsn_align_v2 is
signal comb_out_sosi_arr : t_dp_sosi_arr(g_nof_streams - 1 downto 0);
-- Counter signals
-
signal replace_cnt_arr : t_slv_32_arr(g_nof_streams - 1 downto 0);
signal nxt_hold_replace_cnt_arr : t_slv_32_arr(g_nof_streams - 1 downto 0);
signal hold_replace_cnt_arr : t_slv_32_arr(g_nof_streams - 1 downto 0);
@@ -230,7 +297,7 @@ begin
end if;
end process;
- p_comb : process(r, in_sosi_arr_p, mm_copi, dp_copi, rd_cipo_arr, rd_sosi_arr, stream_en_arr, node_index)
+ p_comb : process(r, in_sosi_arr_p, mm_copi, dp_copi, rd_cipo_arr, rd_sosi_arr, stream_en_arr, chain_node_index)
variable v : t_reg; -- State variable
variable w : t_comb; -- Local wires = memoryless auxiliary variables
begin
@@ -264,26 +331,31 @@ begin
end if;
end loop;
- ----------------------------------------------------------------------------
+ ---------------------------------------------------------------------------
-- p_control, all at sop of local reference input 0
- ----------------------------------------------------------------------------
- w.ref_sosi := in_sosi_arr_p(0);
- if w.ref_sosi.sop = '1' then
+ ---------------------------------------------------------------------------
+ v.ref_sosi := in_sosi_arr_p(0);
+ -- Use r.ref_sosi.sop, that occurs one cycle after in_sosi_arr_p(I).sop,
+ -- to support immediate aligner output when g_use_aligner_at_first_node =
+ -- false. While the local block of chain_node_index = 0 is written into
+ -- the circular buffer, then it can already be read from the circular
+ -- buffer one dp_clk cycle later.
+ if v.ref_sosi.sop = '1' then
-- . write sync & bsn buffer
- v.wr_blk_pointer := TO_UINT(w.ref_sosi.bsn(c_blk_pointer_w - 1 downto 0));
- v.sync_arr(v.wr_blk_pointer) := w.ref_sosi.sync;
- v.bsn_arr(v.wr_blk_pointer) := w.ref_sosi.bsn(g_bsn_w - 1 downto 0);
+ v.wr_blk_pointer := TO_UINT(v.ref_sosi.bsn(c_blk_pointer_w - 1 downto 0));
+ v.sync_arr(v.wr_blk_pointer) := v.ref_sosi.sync;
+ v.bsn_arr(v.wr_blk_pointer) := v.ref_sosi.bsn(g_bsn_w - 1 downto 0);
-- . update read block pointer at g_bsn_latency_max blocks behind the
- -- reference write pointer, dependent on the node_index:
- -- - for g_nof_aligners_max = 1 the node_index = 0 fixed
- -- - for g_nof_aligners_max > 1, node_index is the first BSN aligner in
- -- a chain. Each subsequent node in the chain then has to account
- -- for g_bsn_latency_max additional block latency.
+ -- reference write pointer, dependent on the chain_node_index:
+ -- - for g_nof_aligners_max = 1 the chain_node_index = 0 fixed
+ -- - for g_nof_aligners_max > 1, chain_node_index = 0 is the first BSN
+ -- aligner in a chain. Each subsequent node in the chain then has to
+ -- account for g_bsn_latency_max additional block latency.
if g_nof_aligners_max = 1 then
v.rd_blk_pointer := v.wr_blk_pointer - g_bsn_latency_max;
else
- v.rd_blk_pointer := v.wr_blk_pointer - g_bsn_latency_max * (1 + node_index);
+ v.rd_blk_pointer := v.wr_blk_pointer - g_bsn_latency_max * chain_node_index - c_bsn_latency_first_node;
end if;
if v.rd_blk_pointer < 0 then
v.rd_blk_pointer := v.rd_blk_pointer + c_buffer_nof_blocks;
diff --git a/libraries/base/dp/src/vhdl/mmp_dp_bsn_align_v2.vhd b/libraries/base/dp/src/vhdl/mmp_dp_bsn_align_v2.vhd
index 20456ab387..8159e19755 100644
--- a/libraries/base/dp/src/vhdl/mmp_dp_bsn_align_v2.vhd
+++ b/libraries/base/dp/src/vhdl/mmp_dp_bsn_align_v2.vhd
@@ -45,15 +45,17 @@ entity mmp_dp_bsn_align_v2 is
generic (
-- for dp_bsn_align_v2
g_nof_streams : natural; -- number of input and output streams
- g_bsn_latency_max : natural; -- Maximum travel latency of a remote block in number of block periods T_blk
- g_nof_aligners_max : natural := 1; -- 1 when only align at last node, > 1 when align at every intermediate node
+ g_bsn_latency_max : natural; -- Maximum travel latency of a remote block in number of block periods
+ g_use_aligner_at_first_node : boolean := true;
+ g_nof_aligners_max : natural := 1; -- 1 when only align at last node,
+ -- > 1 when align at every intermediate node
g_block_size : natural := 32; -- > 1, g_block_size=1 is not supported
g_bsn_w : natural := c_dp_stream_bsn_w; -- number of bits in sosi BSN
g_data_w : natural; -- number of bits in sosi data
g_data_replacement_value : integer := 0; -- output sosi data value for missing input blocks
g_use_mm_output : boolean := false; -- output via MM or via streaming DP
- g_pipeline_input : natural := 1; -- >= 0, choose 0 for wires, choose 1 to ease timing closure of in_sosi_arr
- g_pipeline_output : natural := 1; -- >= 0, choose 0 for wires, choose 1 to ease timing closure of out_sosi_arr
+ g_pipeline_input : natural := 1; -- >= 0, 0 for wires, 1 to ease timing closure of in_sosi_arr
+ g_pipeline_output : natural := 1; -- >= 0, 0 for wires, 1 to ease timing closure of out_sosi_arr
g_rd_latency : natural := 2; -- 1 or 2, choose 2 to ease timing closure
-- for mms_dp_bsn_monitor_v2
g_nof_clk_per_sync : natural := 200 * 10**6;
@@ -78,17 +80,17 @@ entity mmp_dp_bsn_align_v2 is
dp_rst : in std_logic;
dp_clk : in std_logic;
- node_index : in natural range 0 to g_nof_aligners_max - 1 := 0; -- only used when g_nof_aligners_max > 1
+ chain_node_index : in natural range 0 to g_nof_aligners_max - 1 := 0; -- only used when g_nof_aligners_max > 1
-- Streaming input
in_sosi_arr : in t_dp_sosi_arr(g_nof_streams - 1 downto 0);
- -- Output via local MM interface in dp_clk domain, when g_use_mm_output = TRUE.
+ -- Output via local MM interface in dp_clk domain, when g_use_mm_output = true.
mm_sosi : out t_dp_sosi; -- streaming information that signals that an output block can be read
mm_copi : in t_mem_copi := c_mem_copi_rst; -- read access to output block, all output streams share same mm_copi
mm_cipo_arr : out t_mem_cipo_arr(g_nof_streams - 1 downto 0);
- -- Output via streaming DP interface, when g_use_mm_output = FALSE.
+ -- Output via streaming DP interface, when g_use_mm_output = false.
out_sosi_arr : out t_dp_sosi_arr(g_nof_streams - 1 downto 0)
);
end mmp_dp_bsn_align_v2;
@@ -220,6 +222,7 @@ begin
generic map (
g_nof_streams => g_nof_streams,
g_bsn_latency_max => g_bsn_latency_max,
+ g_use_aligner_at_first_node => g_use_aligner_at_first_node,
g_nof_aligners_max => g_nof_aligners_max,
g_block_size => g_block_size,
g_bsn_w => g_bsn_w,
@@ -233,7 +236,7 @@ begin
port map (
dp_rst => dp_rst,
dp_clk => dp_clk,
- node_index => node_index,
+ chain_node_index => chain_node_index,
-- MM control
stream_en_arr => stream_en_arr,
stream_replaced_cnt_arr => stream_replaced_cnt_arr,
diff --git a/libraries/base/dp/tb/vhdl/tb_dp_bsn_align_v2.vhd b/libraries/base/dp/tb/vhdl/tb_dp_bsn_align_v2.vhd
index c6db289f9e..de380eb9a9 100644
--- a/libraries/base/dp/tb/vhdl/tb_dp_bsn_align_v2.vhd
+++ b/libraries/base/dp/tb/vhdl/tb_dp_bsn_align_v2.vhd
@@ -34,7 +34,7 @@
-- . g_lost_bsn_id to loose a single block in stream 1 and verify that
-- it gets replaced and flagged.
-- . array of one or more BSN aligners via g_nof_aligners_max >= 1,
--- using node_index_arr, only support tb for g_use_mm_output = FALSE
+-- using chain_node_index_arr, only support tb for g_use_mm_output = false
-- Remark:
-- For this BSN aligner component it was essential to have an almost
-- complete, reviewed, detailed design document, because it is a complex
@@ -141,6 +141,9 @@ architecture tb of tb_dp_bsn_align_v2 is
constant c_lost_bsn_stream_id : natural := sel_a_b(g_nof_streams > 1, 1, 0); -- fixed use stream 1 to verify g_lost_bsn_id. Use 0 for g_nof_streams = 1.
+ -- In tb no support (yet) for immediate aligned output at first node, when c_nof_aligners_max > 1
+ constant c_use_aligner_at_first_node : boolean := true;
+
-- In the tb only support MM interface verification for c_nof_aligners_max = 1
constant c_nof_aligners_max : positive := sel_a_b(g_use_mm_output, 1, g_nof_aligners_max);
@@ -181,7 +184,7 @@ architecture tb of tb_dp_bsn_align_v2 is
signal rst : std_logic := '1';
signal sl1 : std_logic := '1';
- signal node_index_arr : t_nat_natural_arr(0 to c_nof_aligners_max - 1) := array_init(0, c_nof_aligners_max, 1);
+ signal chain_node_index_arr : t_nat_natural_arr(0 to c_nof_aligners_max - 1) := array_init(0, c_nof_aligners_max, 1);
signal stream_en_arr : std_logic_vector(g_nof_streams - 1 downto 0) := (others => '1'); -- default all streams are enabled
signal stream_lost_arr : std_logic_vector(g_nof_streams - 1 downto 0) := (others => '0'); -- default no streams are lost
@@ -501,6 +504,7 @@ begin
generic map (
g_nof_streams => g_nof_streams,
g_bsn_latency_max => g_bsn_latency_max,
+ g_use_aligner_at_first_node => c_use_aligner_at_first_node,
g_nof_aligners_max => c_nof_aligners_max,
g_block_size => g_block_size,
g_bsn_w => g_bsn_w,
@@ -515,8 +519,8 @@ begin
dp_rst => rst,
dp_clk => clk,
-- Control
- node_index => node_index_arr(0),
- stream_en_arr => stream_en_arr,
+ chain_node_index => chain_node_index_arr(0),
+ stream_en_arr => stream_en_arr,
-- Streaming input
in_sosi_arr => dut_in_sosi_2arr(0),
-- Output via local MM interface in dp_clk domain
@@ -567,8 +571,8 @@ begin
dp_rst => rst,
dp_clk => clk,
-- Control
- node_index => node_index_arr(I),
- stream_en_arr => stream_en_arr,
+ chain_node_index => chain_node_index_arr(I),
+ stream_en_arr => stream_en_arr,
-- Streaming input
in_sosi_arr => dut_in_sosi_2arr(I),
-- Output via streaming DP interface
diff --git a/libraries/base/dp/tb/vhdl/tb_mmp_dp_bsn_align_v2.vhd b/libraries/base/dp/tb/vhdl/tb_mmp_dp_bsn_align_v2.vhd
index 78ff110792..6360636150 100644
--- a/libraries/base/dp/tb/vhdl/tb_mmp_dp_bsn_align_v2.vhd
+++ b/libraries/base/dp/tb/vhdl/tb_mmp_dp_bsn_align_v2.vhd
@@ -103,8 +103,10 @@ architecture tb of tb_mmp_dp_bsn_align_v2 is
constant c_gap_size : natural := c_block_period - c_block_size;
-- DUT latency
+ constant c_ref_sosi_latency : natural := 0;
constant c_mm_to_dp_latency : natural := 1;
- constant c_dut_latency : natural := c_pipeline_input + c_rd_latency + c_mm_to_dp_latency + c_pipeline_output;
+ constant c_dut_latency : natural := c_pipeline_input + c_ref_sosi_latency +
+ c_rd_latency + c_mm_to_dp_latency + c_pipeline_output;
constant c_align_latency_nof_blocks : natural := c_bsn_latency_max * c_nof_aligners_max; -- in number blocks
constant c_align_latency_nof_valid : natural := c_bsn_latency_max * c_nof_aligners_max * c_block_size; -- in number of data samples
@@ -147,7 +149,7 @@ architecture tb of tb_mmp_dp_bsn_align_v2 is
signal dp_clk : std_logic := '1';
signal dp_rst : std_logic := '1';
- signal node_index : natural := 0;
+ signal chain_node_index : natural := 0;
signal ref_siso_arr : t_dp_siso_arr(c_nof_streams - 1 downto 0) := (others => c_dp_siso_rdy);
signal ref_sosi_arr : t_dp_sosi_arr(c_nof_streams - 1 downto 0); -- generated stimuli
signal in_sosi_arr : t_dp_sosi_arr(c_nof_streams - 1 downto 0) := (others => c_dp_sosi_rst); -- input stimuli
@@ -456,7 +458,7 @@ begin
dp_rst => dp_rst,
dp_clk => dp_clk,
- node_index => node_index,
+ chain_node_index => chain_node_index,
-- Streaming input
in_sosi_arr => in_sosi_arr,
-- Output via local MM in dp_clk domain
--
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