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-------------------------------------------------------------------------------
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--
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-- Copyright 2020
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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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--
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-- Licensed under the Apache License, Version 2.0 (the "License");
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-- you may not use this file except in compliance with the License.
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-- You may obtain a copy of the License at
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--
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-- http://www.apache.org/licenses/LICENSE-2.0
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--
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-- Unless required by applicable law or agreed to in writing, software
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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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-- Purpose: Testbench for the st_sst unit.
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-- To be used in conjunction with python script: ../python/tc_mmf_st_sst.py
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--
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--
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-- Usage in non-auto-mode (c_modelsim_start = 0 in python):
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-- > as 5
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-- > run -all
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-- > Run python script in separate terminal: "python tc_mmf_st_xst.py --unb 0 --bn 0 --sim"
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-- > Check the results of the python script.
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-- > Stop the simulation manually in Modelsim by pressing the stop-button.
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-- > Evalute the WAVE window.
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LIBRARY IEEE, common_pkg_lib, astron_ram_lib, astron_mm_lib, astron_diagnostics_lib, dp_pkg_lib;
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USE IEEE.std_logic_1164.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 astron_ram_lib.common_ram_pkg.ALL;
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USE common_pkg_lib.common_str_pkg.ALL;
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USE common_pkg_lib.tb_common_pkg.ALL;
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USE astron_mm_lib.tb_common_mem_pkg.ALL;
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USE astron_mm_lib.mm_file_unb_pkg.ALL;
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USE astron_mm_lib.mm_file_pkg.ALL;
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USE dp_pkg_lib.dp_stream_pkg.ALL;
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USE astron_diagnostics_lib.diag_pkg.ALL;
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ENTITY tb_mmf_st_sst IS
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GENERIC(
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g_nof_stat : NATURAL := 8; -- nof accumulators
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g_xst_enable : BOOLEAN := TRUE;
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g_in_data_w : NATURAL := 16;
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g_stat_data_w : NATURAL := 56; -- statistics accumulator width
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g_stat_data_sz : NATURAL := 2; -- statistics word width >= statistics accumulator width and fit in a power of 2 multiple 32b MM words
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g_nof_instances : NATURAL := 4; -- The number of st_sst instances in parallel.
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g_nof_frames : NATURAL := 1
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);
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END tb_mmf_st_sst;
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ARCHITECTURE tb OF tb_mmf_st_sst IS
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CONSTANT c_sim : BOOLEAN := TRUE;
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----------------------------------------------------------------------------
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-- Clocks and resets
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----------------------------------------------------------------------------
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CONSTANT c_mm_clk_period : TIME := 100 ps;
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CONSTANT c_dp_clk_period : TIME := 2 ns;
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CONSTANT c_sclk_period : TIME := 1250 ps;
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CONSTANT c_dp_pps_period : NATURAL := 64;
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SIGNAL dp_pps : STD_LOGIC;
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SIGNAL mm_rst : STD_LOGIC := '1';
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SIGNAL mm_clk : STD_LOGIC := '0';
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SIGNAL dp_rst : STD_LOGIC;
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SIGNAL dp_clk : STD_LOGIC := '0';
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----------------------------------------------------------------------------
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-- MM buses
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----------------------------------------------------------------------------
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SIGNAL reg_diag_bg_mosi : t_mem_mosi;
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SIGNAL reg_diag_bg_miso : t_mem_miso;
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SIGNAL ram_diag_bg_mosi : t_mem_mosi;
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SIGNAL ram_diag_bg_miso : t_mem_miso;
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SIGNAL ram_st_sst_mosi : t_mem_mosi;
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SIGNAL ram_st_sst_miso : t_mem_miso;
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SIGNAL reg_st_sst_mosi : t_mem_mosi;
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SIGNAL reg_st_sst_miso : t_mem_miso;
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SIGNAL ram_st_sst_mosi_arr : t_mem_mosi_arr(g_nof_instances-1 DOWNTO 0);
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SIGNAL ram_st_sst_miso_arr : t_mem_miso_arr(g_nof_instances-1 DOWNTO 0);
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SIGNAL reg_st_sst_mosi_arr : t_mem_mosi_arr(g_nof_instances-1 DOWNTO 0);
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SIGNAL reg_st_sst_miso_arr : t_mem_miso_arr(g_nof_instances-1 DOWNTO 0);
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-- Custom definitions of constants
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CONSTANT c_bg_block_len : NATURAL := g_nof_stat*g_nof_frames;
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CONSTANT c_complex_factor : NATURAL := sel_a_b(g_xst_enable, c_nof_complex, 1);
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CONSTANT c_ram_addr_w : NATURAL := ceil_log2(g_stat_data_sz*g_nof_stat*c_complex_factor);
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-- Configuration of the block generator:
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CONSTANT c_bg_nof_output_streams : POSITIVE := g_nof_instances;
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CONSTANT c_bg_buf_dat_w : POSITIVE := c_nof_complex*g_in_data_w;
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CONSTANT c_bg_buf_adr_w : POSITIVE := ceil_log2(c_bg_block_len);
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CONSTANT c_bg_data_file_prefix : STRING := "UNUSED";
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CONSTANT c_bg_data_file_index_arr : t_nat_natural_arr := array_init(0, g_nof_instances, 1);
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-- Signal declarations to connect block generator to the DUT
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SIGNAL bg_siso_arr : t_dp_siso_arr(c_bg_nof_output_streams-1 DOWNTO 0) := (OTHERS=>c_dp_siso_rdy);
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SIGNAL bg_sosi_arr : t_dp_sosi_arr(c_bg_nof_output_streams-1 DOWNTO 0);
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BEGIN
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----------------------------------------------------------------------------
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-- Clock and reset generation
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----------------------------------------------------------------------------
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mm_clk <= NOT mm_clk AFTER c_mm_clk_period/2;
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mm_rst <= '1', '0' AFTER c_mm_clk_period*5;
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dp_clk <= NOT dp_clk AFTER c_dp_clk_period/2;
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dp_rst <= '1', '0' AFTER c_dp_clk_period*5;
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------------------------------------------------------------------------------
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-- External PPS
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------------------------------------------------------------------------------
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proc_common_gen_pulse(1, c_dp_pps_period, '1', dp_clk, dp_pps);
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----------------------------------------------------------------------------
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-- Procedure that polls a sim control file that can be used to e.g. get
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-- the simulation time in ns
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----------------------------------------------------------------------------
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mmf_poll_sim_ctrl_file(c_mmf_unb_file_path & "sim.ctrl", c_mmf_unb_file_path & "sim.stat");
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----------------------------------------------------------------------------
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-- MM buses
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----------------------------------------------------------------------------
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u_mm_file_reg_diag_bg : mm_file GENERIC MAP(mmf_unb_file_prefix(0, 0, "BN") & "REG_DIAG_BG")
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PORT MAP(mm_rst, mm_clk, reg_diag_bg_mosi, reg_diag_bg_miso);
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u_mm_file_ram_diag_bg : mm_file GENERIC MAP(mmf_unb_file_prefix(0, 0, "BN") & "RAM_DIAG_BG")
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PORT MAP(mm_rst, mm_clk, ram_diag_bg_mosi, ram_diag_bg_miso);
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u_mm_file_ram_st_sst : mm_file GENERIC MAP(mmf_unb_file_prefix(0, 0, "BN") & "RAM_ST_SST")
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PORT MAP(mm_rst, mm_clk, ram_st_sst_mosi, ram_st_sst_miso);
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u_mm_file_reg_st_sst : mm_file GENERIC MAP(mmf_unb_file_prefix(0, 0, "BN") & "REG_ST_SST")
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PORT MAP(mm_rst, mm_clk, reg_st_sst_mosi, reg_st_sst_miso);
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----------------------------------------------------------------------------
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-- Source: block generator
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----------------------------------------------------------------------------
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u_bg : ENTITY astron_diagnostics_lib.mms_diag_block_gen
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GENERIC MAP(
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g_nof_streams => c_bg_nof_output_streams,
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g_buf_dat_w => c_bg_buf_dat_w,
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g_buf_addr_w => c_bg_buf_adr_w,
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g_file_index_arr => c_bg_data_file_index_arr,
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g_file_name_prefix => c_bg_data_file_prefix
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)
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PORT MAP(
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-- System
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mm_rst => mm_rst,
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mm_clk => mm_clk,
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dp_rst => dp_rst,
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dp_clk => dp_clk,
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en_sync => dp_pps,
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-- MM interface
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reg_bg_ctrl_mosi => reg_diag_bg_mosi,
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reg_bg_ctrl_miso => reg_diag_bg_miso,
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ram_bg_data_mosi => ram_diag_bg_mosi,
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ram_bg_data_miso => ram_diag_bg_miso,
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-- ST interface
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out_siso_arr => bg_siso_arr,
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out_sosi_arr => bg_sosi_arr
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);
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-- Combine the internal array of mm interfaces for the beamlet statistics to one array that is connected to the port of bf
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u_mem_mux_ram_sst : ENTITY astron_mm_lib.common_mem_mux
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GENERIC MAP (
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g_nof_mosi => g_nof_instances,
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g_mult_addr_w => c_ram_addr_w
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)
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PORT MAP (
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mosi => ram_st_sst_mosi,
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miso => ram_st_sst_miso,
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mosi_arr => ram_st_sst_mosi_arr,
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miso_arr => ram_st_sst_miso_arr
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);
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u_mem_mux_reg_sst : ENTITY astron_mm_lib.common_mem_mux
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GENERIC MAP (
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g_nof_mosi => g_nof_instances,
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g_mult_addr_w => 1
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)
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PORT MAP (
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mosi => reg_st_sst_mosi,
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miso => reg_st_sst_miso,
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mosi_arr => reg_st_sst_mosi_arr,
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miso_arr => reg_st_sst_miso_arr
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);
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----------------------------------------------------------------------------
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-- DUT: Device Under Test
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----------------------------------------------------------------------------
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gen_duts : FOR I IN 0 TO g_nof_instances-1 GENERATE
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u_dut : ENTITY work.st_sst
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GENERIC MAP(
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g_nof_stat => g_nof_stat,
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g_xst_enable => g_xst_enable,
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g_in_data_w => g_in_data_w,
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g_stat_data_w => g_stat_data_w,
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g_stat_data_sz => g_stat_data_sz
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)
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PORT MAP(
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mm_rst => mm_rst,
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mm_clk => mm_clk,
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dp_rst => dp_rst,
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dp_clk => dp_clk,
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-- Streaming
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in_complex => bg_sosi_arr(I),
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-- Memory Mapped
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ram_st_sst_mosi => ram_st_sst_mosi_arr(I),
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ram_st_sst_miso => ram_st_sst_miso_arr(I),
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reg_st_sst_mosi => reg_st_sst_mosi_arr(I),
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reg_st_sst_miso => reg_st_sst_miso_arr(I)
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);
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END GENERATE;
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END tb;
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