-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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--
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--
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-- Copyright (C) 2015
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-- Copyright 2020
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-- ASTRON (Netherlands Institute for Radio Astronomy) <http://www.astron.nl/>
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-- ASTRON (Netherlands Institute for Radio Astronomy) <http://www.astron.nl/>
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-- P.O.Box 2, 7990 AA Dwingeloo, The Netherlands
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-- P.O.Box 2, 7990 AA Dwingeloo, The Netherlands
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--
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--
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-- This program is free software: you can redistribute it and/or modify
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-- Licensed under the Apache License, Version 2.0 (the "License");
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-- it under the terms of the GNU General Public License as published by
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-- you may not use this file except in compliance with the License.
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-- the Free Software Foundation, either version 3 of the License, or
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-- You may obtain a copy of the License at
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-- (at your option) any later version.
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--
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--
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-- This program is distributed in the hope that it will be useful,
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-- http://www.apache.org/licenses/LICENSE-2.0
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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--
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-- You should have received a copy of the GNU General Public License
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-- Unless required by applicable law or agreed to in writing, software
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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-- distributed under the License is distributed on an "AS IS" BASIS,
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-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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-- See the License for the specific language governing permissions and
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-- limitations under the License.
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--
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--
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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-- Purpose:
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-- Purpose:
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-- . The dp_stream_verify verifies the stream of packets with counter data that
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-- . The dp_stream_verify verifies the stream of packets with counter data that
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-- are generated by dp_stimuli_st.
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-- are generated by dp_stimuli_st.
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-- Description:
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-- Description:
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-- The component can verify a stream:
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-- The component can verify a stream:
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-- . The sosi control fields are verified conform the bus specifications
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-- . The sosi control fields are verified conform the bus specifications
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-- eg. considering the RL, no missing eop, etc.
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-- eg. considering the RL, no missing eop, etc.
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-- . The sosi data fields are verified based on their previous value under
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-- . The sosi data fields are verified based on their previous value under
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-- the assumption that they contain incrementing data. Whether a field
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-- the assumption that they contain incrementing data. Whether a field
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-- is checked depends on verify_snk_in_enable.
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-- is checked depends on verify_snk_in_enable.
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--
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--
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-- The component also checks whether the stream is active at all. A
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-- The component also checks whether the stream is active at all. A
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-- pulse in verify_expected_snk_in_evt triggers the verification of the
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-- pulse in verify_expected_snk_in_evt triggers the verification of the
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-- corresponding field in snk_in using the expected_snk_in as reference.
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-- corresponding field in snk_in using the expected_snk_in as reference.
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--
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--
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-- Usage:
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-- Usage:
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-- . See tb_dp_example_no_dut for usage example
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-- . See tb_dp_example_no_dut for usage example
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--
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--
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LIBRARY IEEE, common_pkg_lib;
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LIBRARY IEEE, common_pkg_lib;
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USE IEEE.std_logic_1164.ALL;
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USE IEEE.std_logic_1164.ALL;
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USE IEEE.numeric_std.ALL;
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USE IEEE.numeric_std.ALL;
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USE common_pkg_lib.common_pkg.ALL;
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USE common_pkg_lib.common_pkg.ALL;
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USE common_pkg_lib.common_lfsr_sequences_pkg.ALL;
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USE common_pkg_lib.common_lfsr_sequences_pkg.ALL;
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USE common_pkg_lib.tb_common_pkg.ALL;
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USE common_pkg_lib.tb_common_pkg.ALL;
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USE work.dp_stream_pkg.ALL;
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USE work.dp_stream_pkg.ALL;
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USE work.tb_dp_pkg.ALL;
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USE work.tb_dp_pkg.ALL;
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ENTITY dp_stream_verify IS
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ENTITY dp_stream_verify IS
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GENERIC (
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GENERIC (
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g_instance_nr : NATURAL := 0;
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g_instance_nr : NATURAL := 0;
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-- flow control
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-- flow control
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g_random_w : NATURAL := 14; -- use different random width for stimuli and for verify to have different random sequences
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g_random_w : NATURAL := 14; -- use different random width for stimuli and for verify to have different random sequences
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g_pulse_active : NATURAL := 1;
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g_pulse_active : NATURAL := 1;
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g_pulse_period : NATURAL := 2;
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g_pulse_period : NATURAL := 2;
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g_flow_control : t_dp_flow_control_enum := e_active; -- always active, random or pulse flow control
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g_flow_control : t_dp_flow_control_enum := e_active; -- always active, random or pulse flow control
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-- initializations
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-- initializations
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g_sync_period : NATURAL := 10;
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g_sync_period : NATURAL := 10;
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g_sync_offset : NATURAL := 7;
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g_sync_offset : NATURAL := 7;
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g_snk_in_cnt_max : t_dp_sosi_unsigned := c_dp_sosi_unsigned_rst; -- default 0 is no wrap
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g_snk_in_cnt_max : t_dp_sosi_unsigned := c_dp_sosi_unsigned_rst; -- default 0 is no wrap
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g_snk_in_cnt_gap : t_dp_sosi_unsigned := c_dp_sosi_unsigned_ones; -- default only accept increment +1
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g_snk_in_cnt_gap : t_dp_sosi_unsigned := c_dp_sosi_unsigned_ones; -- default only accept increment +1
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-- specific
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-- specific
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g_in_dat_w : NATURAL := 32;
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g_in_dat_w : NATURAL := 32;
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g_pkt_len : NATURAL := 16
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g_pkt_len : NATURAL := 16
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);
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);
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PORT (
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PORT (
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rst : IN STD_LOGIC;
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rst : IN STD_LOGIC;
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clk : IN STD_LOGIC;
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clk : IN STD_LOGIC;
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-- Verify data
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-- Verify data
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snk_out : OUT t_dp_siso;
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snk_out : OUT t_dp_siso;
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snk_in : IN t_dp_sosi;
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snk_in : IN t_dp_sosi;
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-- During stimuli
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-- During stimuli
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verify_snk_in_enable : IN t_dp_sosi_sl; -- enable to verify that the snk_in fields are incrementing
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verify_snk_in_enable : IN t_dp_sosi_sl; -- enable to verify that the snk_in fields are incrementing
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-- End of stimuli
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-- End of stimuli
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expected_snk_in : IN t_dp_sosi; -- expected snk_in at verify_expected_snk_in_evt
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expected_snk_in : IN t_dp_sosi; -- expected snk_in at verify_expected_snk_in_evt
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verify_expected_snk_in_evt : IN t_dp_sosi_sl -- trigger to verify the expected_snk_in
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verify_expected_snk_in_evt : IN t_dp_sosi_sl -- trigger to verify the expected_snk_in
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);
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);
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END dp_stream_verify;
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END dp_stream_verify;
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ARCHITECTURE tb OF dp_stream_verify IS
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ARCHITECTURE tb OF dp_stream_verify IS
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CONSTANT c_rl : NATURAL := 1;
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CONSTANT c_rl : NATURAL := 1;
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CONSTANT c_no_dut : BOOLEAN:= TRUE;
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CONSTANT c_no_dut : BOOLEAN:= TRUE;
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SIGNAL random : STD_LOGIC_VECTOR(g_random_w-1 DOWNTO 0) := TO_UVEC(g_instance_nr, g_random_w); -- use different initialization to have different random sequences per stream
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SIGNAL random : STD_LOGIC_VECTOR(g_random_w-1 DOWNTO 0) := TO_UVEC(g_instance_nr, g_random_w); -- use different initialization to have different random sequences per stream
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SIGNAL pulse : STD_LOGIC;
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SIGNAL pulse : STD_LOGIC;
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SIGNAL pulse_en : STD_LOGIC := '1';
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SIGNAL pulse_en : STD_LOGIC := '1';
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SIGNAL i_snk_out : t_dp_siso := c_dp_siso_rdy;
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SIGNAL i_snk_out : t_dp_siso := c_dp_siso_rdy;
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SIGNAL prev_snk_out : t_dp_siso;
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SIGNAL prev_snk_out : t_dp_siso;
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SIGNAL hold_snk_in_data : STD_LOGIC_VECTOR(c_dp_stream_data_w-1 DOWNTO 0); -- used to hold valid data for verify at verify_expected_snk_in_evt
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SIGNAL hold_snk_in_data : STD_LOGIC_VECTOR(c_dp_stream_data_w-1 DOWNTO 0); -- used to hold valid data for verify at verify_expected_snk_in_evt
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SIGNAL snk_in_data : STD_LOGIC_VECTOR(g_in_dat_w-1 DOWNTO 0);
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SIGNAL snk_in_data : STD_LOGIC_VECTOR(g_in_dat_w-1 DOWNTO 0);
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SIGNAL prev_snk_in : t_dp_sosi;
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SIGNAL prev_snk_in : t_dp_sosi;
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SIGNAL hold_snk_in_sop : STD_LOGIC := '0';
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SIGNAL hold_snk_in_sop : STD_LOGIC := '0';
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SIGNAL detected_snk_in_ctrl : t_dp_sosi_sl := c_dp_sosi_sl_rst;
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SIGNAL detected_snk_in_ctrl : t_dp_sosi_sl := c_dp_sosi_sl_rst;
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SIGNAL verify_snk_in_increment : t_dp_sosi_sl := c_dp_sosi_sl_rst;
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SIGNAL verify_snk_in_increment : t_dp_sosi_sl := c_dp_sosi_sl_rst;
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SIGNAL verify_snk_in_ctrl : t_dp_sosi_sl := c_dp_sosi_sl_rst;
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SIGNAL verify_snk_in_ctrl : t_dp_sosi_sl := c_dp_sosi_sl_rst;
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SIGNAL exp_size : NATURAL;
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SIGNAL exp_size : NATURAL;
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SIGNAL cnt_size : NATURAL;
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SIGNAL cnt_size : NATURAL;
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BEGIN
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BEGIN
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snk_out <= i_snk_out;
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snk_out <= i_snk_out;
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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-- STREAM CONTROL
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-- STREAM CONTROL
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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random <= func_common_random(random) WHEN rising_edge(clk);
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random <= func_common_random(random) WHEN rising_edge(clk);
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proc_common_gen_duty_pulse(g_pulse_active, g_pulse_period, '1', rst, clk, pulse_en, pulse);
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proc_common_gen_duty_pulse(g_pulse_active, g_pulse_period, '1', rst, clk, pulse_en, pulse);
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i_snk_out.ready <= '1' WHEN g_flow_control=e_active ELSE
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i_snk_out.ready <= '1' WHEN g_flow_control=e_active ELSE
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random(random'HIGH) WHEN g_flow_control=e_random ELSE
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random(random'HIGH) WHEN g_flow_control=e_random ELSE
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pulse WHEN g_flow_control=e_pulse;
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pulse WHEN g_flow_control=e_pulse;
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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-- DATA VERIFICATION
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-- DATA VERIFICATION
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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-- Detect first sync, sop, eop, valid
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-- Detect first sync, sop, eop, valid
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detected_snk_in_ctrl.sync <= '1' WHEN snk_in.sync='1' AND rising_edge(clk);
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detected_snk_in_ctrl.sync <= '1' WHEN snk_in.sync='1' AND rising_edge(clk);
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detected_snk_in_ctrl.valid <= '1' WHEN snk_in.valid='1' AND rising_edge(clk);
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detected_snk_in_ctrl.valid <= '1' WHEN snk_in.valid='1' AND rising_edge(clk);
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detected_snk_in_ctrl.sop <= '1' WHEN snk_in.sop='1' AND rising_edge(clk);
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detected_snk_in_ctrl.sop <= '1' WHEN snk_in.sop='1' AND rising_edge(clk);
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detected_snk_in_ctrl.eop <= '1' WHEN snk_in.eop='1' AND rising_edge(clk);
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detected_snk_in_ctrl.eop <= '1' WHEN snk_in.eop='1' AND rising_edge(clk);
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-- Verify that the stimuli have been applied at all so at least one active sosi sync, sop, eop, valid field has been detected
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-- Verify that the stimuli have been applied at all so at least one active sosi sync, sop, eop, valid field has been detected
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proc_dp_verify_value("snk_in.sync", clk, verify_expected_snk_in_evt.sync, expected_snk_in.sync, detected_snk_in_ctrl.sync);
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proc_dp_verify_value("snk_in.sync", clk, verify_expected_snk_in_evt.sync, expected_snk_in.sync, detected_snk_in_ctrl.sync);
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proc_dp_verify_value("snk_in.sop", clk, verify_expected_snk_in_evt.sop, expected_snk_in.sop, detected_snk_in_ctrl.sop);
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proc_dp_verify_value("snk_in.sop", clk, verify_expected_snk_in_evt.sop, expected_snk_in.sop, detected_snk_in_ctrl.sop);
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proc_dp_verify_value("snk_in.eop", clk, verify_expected_snk_in_evt.eop, expected_snk_in.eop, detected_snk_in_ctrl.eop);
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proc_dp_verify_value("snk_in.eop", clk, verify_expected_snk_in_evt.eop, expected_snk_in.eop, detected_snk_in_ctrl.eop);
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proc_dp_verify_value("snk_in.valid", clk, verify_expected_snk_in_evt.valid, expected_snk_in.valid, detected_snk_in_ctrl.valid);
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proc_dp_verify_value("snk_in.valid", clk, verify_expected_snk_in_evt.valid, expected_snk_in.valid, detected_snk_in_ctrl.valid);
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-- Verify that the last sosi data, bsn, channel and err fields are correct
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-- Verify that the last sosi data, bsn, channel and err fields are correct
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proc_dp_verify_value("snk_in.data", e_equal, clk, verify_expected_snk_in_evt.data, expected_snk_in.data, hold_snk_in_data);
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proc_dp_verify_value("snk_in.data", e_equal, clk, verify_expected_snk_in_evt.data, expected_snk_in.data, hold_snk_in_data);
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proc_dp_verify_value("snk_in.bsn", e_equal, clk, verify_expected_snk_in_evt.bsn, expected_snk_in.bsn, snk_in.bsn);
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proc_dp_verify_value("snk_in.bsn", e_equal, clk, verify_expected_snk_in_evt.bsn, expected_snk_in.bsn, snk_in.bsn);
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proc_dp_verify_value("snk_in.channel", e_equal, clk, verify_expected_snk_in_evt.channel, expected_snk_in.channel, snk_in.channel);
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proc_dp_verify_value("snk_in.channel", e_equal, clk, verify_expected_snk_in_evt.channel, expected_snk_in.channel, snk_in.channel);
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proc_dp_verify_value("snk_in.err", e_equal, clk, verify_expected_snk_in_evt.err, expected_snk_in.err, snk_in.err);
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proc_dp_verify_value("snk_in.err", e_equal, clk, verify_expected_snk_in_evt.err, expected_snk_in.err, snk_in.err);
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-- Verify that the output is incrementing data, like the input stimuli
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-- Verify that the output is incrementing data, like the input stimuli
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p_verify_snk_in_increment : PROCESS(verify_snk_in_enable, detected_snk_in_ctrl)
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p_verify_snk_in_increment : PROCESS(verify_snk_in_enable, detected_snk_in_ctrl)
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BEGIN
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BEGIN
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verify_snk_in_increment <= verify_snk_in_enable;
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verify_snk_in_increment <= verify_snk_in_enable;
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verify_snk_in_increment.data <= verify_snk_in_enable.data AND detected_snk_in_ctrl.valid;
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verify_snk_in_increment.data <= verify_snk_in_enable.data AND detected_snk_in_ctrl.valid;
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verify_snk_in_increment.re <= verify_snk_in_enable.re AND detected_snk_in_ctrl.valid;
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verify_snk_in_increment.re <= verify_snk_in_enable.re AND detected_snk_in_ctrl.valid;
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verify_snk_in_increment.im <= verify_snk_in_enable.im AND detected_snk_in_ctrl.valid;
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verify_snk_in_increment.im <= verify_snk_in_enable.im AND detected_snk_in_ctrl.valid;
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verify_snk_in_increment.bsn <= verify_snk_in_enable.bsn AND detected_snk_in_ctrl.sop;
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verify_snk_in_increment.bsn <= verify_snk_in_enable.bsn AND detected_snk_in_ctrl.sop;
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verify_snk_in_increment.channel <= verify_snk_in_enable.channel AND detected_snk_in_ctrl.sop;
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verify_snk_in_increment.channel <= verify_snk_in_enable.channel AND detected_snk_in_ctrl.sop;
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verify_snk_in_increment.empty <= verify_snk_in_enable.empty AND detected_snk_in_ctrl.eop;
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verify_snk_in_increment.empty <= verify_snk_in_enable.empty AND detected_snk_in_ctrl.eop;
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verify_snk_in_increment.err <= verify_snk_in_enable.err AND detected_snk_in_ctrl.eop;
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verify_snk_in_increment.err <= verify_snk_in_enable.err AND detected_snk_in_ctrl.eop;
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END PROCESS;
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END PROCESS;
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proc_dp_verify_data("snk_in.data", c_rl, g_snk_in_cnt_max.data, g_snk_in_cnt_gap.data, clk, verify_snk_in_increment.data, i_snk_out.ready, snk_in.valid, snk_in.data, prev_snk_in.data);
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proc_dp_verify_data("snk_in.data", c_rl, g_snk_in_cnt_max.data, g_snk_in_cnt_gap.data, clk, verify_snk_in_increment.data, i_snk_out.ready, snk_in.valid, snk_in.data, prev_snk_in.data);
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proc_dp_verify_data("snk_in.re", c_rl, g_snk_in_cnt_max.re, g_snk_in_cnt_gap.re, clk, verify_snk_in_increment.re, i_snk_out.ready, snk_in.valid, snk_in.re, prev_snk_in.re);
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proc_dp_verify_data("snk_in.re", c_rl, g_snk_in_cnt_max.re, g_snk_in_cnt_gap.re, clk, verify_snk_in_increment.re, i_snk_out.ready, snk_in.valid, snk_in.re, prev_snk_in.re);
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proc_dp_verify_data("snk_in.im", c_rl, g_snk_in_cnt_max.im, g_snk_in_cnt_gap.im, clk, verify_snk_in_increment.im, i_snk_out.ready, snk_in.valid, snk_in.im, prev_snk_in.im);
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proc_dp_verify_data("snk_in.im", c_rl, g_snk_in_cnt_max.im, g_snk_in_cnt_gap.im, clk, verify_snk_in_increment.im, i_snk_out.ready, snk_in.valid, snk_in.im, prev_snk_in.im);
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proc_dp_verify_data("snk_in.bsn", c_rl, g_snk_in_cnt_max.bsn, g_snk_in_cnt_gap.bsn, clk, verify_snk_in_increment.bsn, i_snk_out.ready, snk_in.sop, snk_in.bsn, prev_snk_in.bsn);
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proc_dp_verify_data("snk_in.bsn", c_rl, g_snk_in_cnt_max.bsn, g_snk_in_cnt_gap.bsn, clk, verify_snk_in_increment.bsn, i_snk_out.ready, snk_in.sop, snk_in.bsn, prev_snk_in.bsn);
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proc_dp_verify_data("snk_in.channel", c_rl, g_snk_in_cnt_max.channel, g_snk_in_cnt_gap.channel, clk, verify_snk_in_increment.channel, i_snk_out.ready, snk_in.sop, snk_in.channel, prev_snk_in.channel);
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proc_dp_verify_data("snk_in.channel", c_rl, g_snk_in_cnt_max.channel, g_snk_in_cnt_gap.channel, clk, verify_snk_in_increment.channel, i_snk_out.ready, snk_in.sop, snk_in.channel, prev_snk_in.channel);
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proc_dp_verify_data("snk_in.empty", c_rl, g_snk_in_cnt_max.empty, g_snk_in_cnt_gap.empty, clk, verify_snk_in_increment.empty, i_snk_out.ready, snk_in.eop, snk_in.empty, prev_snk_in.empty);
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proc_dp_verify_data("snk_in.empty", c_rl, g_snk_in_cnt_max.empty, g_snk_in_cnt_gap.empty, clk, verify_snk_in_increment.empty, i_snk_out.ready, snk_in.eop, snk_in.empty, prev_snk_in.empty);
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proc_dp_verify_data("snk_in.err", c_rl, g_snk_in_cnt_max.err, g_snk_in_cnt_gap.err, clk, verify_snk_in_increment.err, i_snk_out.ready, snk_in.eop, snk_in.err, prev_snk_in.err);
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proc_dp_verify_data("snk_in.err", c_rl, g_snk_in_cnt_max.err, g_snk_in_cnt_gap.err, clk, verify_snk_in_increment.err, i_snk_out.ready, snk_in.eop, snk_in.err, prev_snk_in.err);
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-- Verify that the snk_in control fields are correct
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-- Verify that the snk_in control fields are correct
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p_verify_snk_in_ctrl: PROCESS(snk_in, verify_snk_in_enable)
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p_verify_snk_in_ctrl: PROCESS(snk_in, verify_snk_in_enable)
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BEGIN
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BEGIN
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verify_snk_in_ctrl.sync <= snk_in.sync AND verify_snk_in_enable.valid AND verify_snk_in_enable.sync;
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verify_snk_in_ctrl.sync <= snk_in.sync AND verify_snk_in_enable.valid AND verify_snk_in_enable.sync;
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verify_snk_in_ctrl.sop <= snk_in.sop AND verify_snk_in_enable.valid AND verify_snk_in_enable.sop AND verify_snk_in_enable.eop;
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verify_snk_in_ctrl.sop <= snk_in.sop AND verify_snk_in_enable.valid AND verify_snk_in_enable.sop AND verify_snk_in_enable.eop;
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verify_snk_in_ctrl.eop <= snk_in.eop AND verify_snk_in_enable.valid AND verify_snk_in_enable.sop AND verify_snk_in_enable.eop;
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verify_snk_in_ctrl.eop <= snk_in.eop AND verify_snk_in_enable.valid AND verify_snk_in_enable.sop AND verify_snk_in_enable.eop;
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verify_snk_in_ctrl.valid <= snk_in.valid AND verify_snk_in_enable.valid;
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verify_snk_in_ctrl.valid <= snk_in.valid AND verify_snk_in_enable.valid;
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END PROCESS;
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END PROCESS;
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-- Verify that the output sync occurs when expected
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-- Verify that the output sync occurs when expected
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proc_dp_verify_sync(g_sync_period, g_sync_offset, clk, detected_snk_in_ctrl.sop, verify_snk_in_ctrl.sync, verify_snk_in_ctrl.sop, snk_in.bsn);
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proc_dp_verify_sync(g_sync_period, g_sync_offset, clk, detected_snk_in_ctrl.sop, verify_snk_in_ctrl.sync, verify_snk_in_ctrl.sop, snk_in.bsn);
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-- Verify output packet ctrl
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-- Verify output packet ctrl
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proc_dp_verify_sop_and_eop(clk, verify_snk_in_ctrl.valid, verify_snk_in_ctrl.sop, verify_snk_in_ctrl.eop, hold_snk_in_sop);
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proc_dp_verify_sop_and_eop(clk, verify_snk_in_ctrl.valid, verify_snk_in_ctrl.sop, verify_snk_in_ctrl.eop, hold_snk_in_sop);
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-- Verify output packet block size
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-- Verify output packet block size
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exp_size <= g_pkt_len;
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exp_size <= g_pkt_len;
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proc_dp_verify_block_size(exp_size, clk, verify_snk_in_ctrl.valid, verify_snk_in_ctrl.sop, verify_snk_in_ctrl.eop, cnt_size);
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proc_dp_verify_block_size(exp_size, clk, verify_snk_in_ctrl.valid, verify_snk_in_ctrl.sop, verify_snk_in_ctrl.eop, cnt_size);
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-- Verify output ready latency
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-- Verify output ready latency
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proc_dp_verify_valid(clk, detected_snk_in_ctrl.valid, i_snk_out.ready, prev_snk_out.ready, verify_snk_in_ctrl.valid);
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proc_dp_verify_valid(clk, detected_snk_in_ctrl.valid, i_snk_out.ready, prev_snk_out.ready, verify_snk_in_ctrl.valid);
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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-- Auxiliary
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-- Auxiliary
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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-- Map to slv to ease monitoring in wave window
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-- Map to slv to ease monitoring in wave window
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snk_in_data <= snk_in.data(g_in_dat_w-1 DOWNTO 0);
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snk_in_data <= snk_in.data(g_in_dat_w-1 DOWNTO 0);
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hold_snk_in_data <= snk_in.data WHEN snk_in.valid='1';
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hold_snk_in_data <= snk_in.data WHEN snk_in.valid='1';
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END tb;
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END tb;
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