diff --git a/applications/lofar2/designs/lofar2_unb2c_sdp_station/revisions/lofar2_unb2c_sdp_station_bf/tb_lofar2_unb2c_sdp_station_bf.vhd b/applications/lofar2/designs/lofar2_unb2c_sdp_station/revisions/lofar2_unb2c_sdp_station_bf/tb_lofar2_unb2c_sdp_station_bf.vhd
index f00a6c10ef0ac8ddfcfff3f27a1ea5975db8445f..c7cca711f2f77c247415e164bbe5e6f86734710a 100644
--- a/applications/lofar2/designs/lofar2_unb2c_sdp_station/revisions/lofar2_unb2c_sdp_station_bf/tb_lofar2_unb2c_sdp_station_bf.vhd
+++ b/applications/lofar2/designs/lofar2_unb2c_sdp_station/revisions/lofar2_unb2c_sdp_station_bf/tb_lofar2_unb2c_sdp_station_bf.vhd
@@ -20,39 +20,47 @@
-------------------------------------------------------------------------------
--
--- Author: R. van der Walle, E. Kooistra
+-- Author: R. van der Walle (original), E. Kooistra (updates)
-- Purpose: Self-checking testbench for simulating lofar2_unb2c_sdp_station_bf using WG data.
--
-- Description:
-- MM control actions:
--
--- 1) Enable calc mode for WG via reg_diag_wg with:
--- freq = 19.921875MHz
--- ampl = 0.5 * 2**13
+-- 1) Enable calc mode for WG on signal input g_sp via reg_diag_wg with:
+-- g_subband = 102 --> WG freq = 19.921875MHz
+-- g_ampl = 1.0 --> WG ampl = 2**13
--
-- 2) Read current BSN from reg_bsn_scheduler_wg and write reg_bsn_scheduler_wg
-- to trigger start of WG at BSN.
--
--- 3) Read subband statistics (SST)
---
--- 4) Read beamlet statistics (BST) via ram_st_bst and verify with
--- c_exp_beamlet_power_sp_0 at c_sdp_N_sub-1 - c_subband_sp_0.
--- View sp_beamlet_power_0 in Wave window
--- 5) Compare SST with BST.
--- 6) Verify 10GbE output.
---
+-- 3) Read and verify subband statistics (SST)
+--
+-- 4) Select subband g_subband for beamlet g_beamlet
+--
+-- 5) Apply BF weight (g_bf_gain, g_bf_phase) to g_beamlet X beam and Y beam
+--
+-- 6) Read and verify beamlet statistics (BST)
+-- View sp_subband_sst in Wave window
+-- View pol_beamlet_bst in Wave window
+--
+-- 7) Verify 10GbE output header and output payload for g_beamlet.
--
-- Usage:
-- > as 7 # default
-- > as 12 # for detailed debugging
+-- # Manually add missing signal
+-- > add wave -position insertpoint \
+-- sim:/tb_lofar2_unb2c_sdp_station_bf/sp_subband_ssts_arr2 \
+-- sim:/tb_lofar2_unb2c_sdp_station_bf/pol_beamlet_bsts_arr2
-- > run -a
--- Takes about 40 m
+-- Takes about 40 m when g_read_all_* = FALSE
+-- Takes about 1h 5 m when g_read_all_* = TRUE
--
-------------------------------------------------------------------------------
LIBRARY IEEE, common_lib, unb2c_board_lib, i2c_lib, mm_lib, dp_lib, diag_lib, lofar2_sdp_lib, wpfb_lib, tech_pll_lib, tr_10GbE_lib, lofar2_unb2c_sdp_station_lib;
USE IEEE.std_logic_1164.ALL;
USE IEEE.numeric_std.ALL;
-USE IEEE.MATH_REAL.ALL;
+USE IEEE.math_real.ALL;
USE common_lib.common_pkg.ALL;
USE common_lib.common_mem_pkg.ALL;
USE common_lib.common_field_pkg.ALL;
@@ -70,6 +78,17 @@ USE lofar2_sdp_lib.tb_sdp_pkg.ALL;
USE tech_pll_lib.tech_pll_component_pkg.ALL;
ENTITY tb_lofar2_unb2c_sdp_station_bf IS
+ GENERIC (
+ g_sp : NATURAL := 0; -- WG signal path index in range(S_pn = 12)
+ g_wg_ampl : REAL := 1.0; -- WG normalized amplitude
+ g_subband : NATURAL := 102; -- select g_subband at index 102 = 102/1024 * 200MHz = 19.921875 MHz
+ g_beamlet : NATURAL := 10; -- map g_subband to g_beamlet index in beamset in range(c_sdp_S_sub_bf = 488)
+ g_beamlet_scale : REAL := 1.0 / 2.0**9; -- g_beamlet output scale factor
+ g_bf_gain : REAL := 1.0; -- g_beamlet BF weight normalized gain
+ g_bf_phase : REAL := 30.0; -- g_beamlet BF weight phase rotation in degrees
+ g_read_all_SST : BOOLEAN := FALSE; -- when FALSE only read SST for g_subband, to save sim time
+ g_read_all_BST : BOOLEAN := FALSE -- when FALSE only read BST for g_beamlet, to save sim time
+ );
END tb_lofar2_unb2c_sdp_station_bf;
ARCHITECTURE tb OF tb_lofar2_unb2c_sdp_station_bf IS
@@ -95,16 +114,19 @@ ARCHITECTURE tb OF tb_lofar2_unb2c_sdp_station_bf IS
CONSTANT c_sa_clk_period : TIME := tech_pll_clk_644_period; -- 644MHz
CONSTANT c_tb_clk_period : TIME := 100 ps; -- use fast tb_clk to speed up M&C
+ CONSTANT c_cross_clock_domain_latency : NATURAL := 20;
CONSTANT c_nof_block_per_sync : NATURAL := 16;
CONSTANT c_nof_clk_per_sync : NATURAL := c_nof_block_per_sync*c_sdp_N_fft;
CONSTANT c_pps_period : NATURAL := c_nof_clk_per_sync;
CONSTANT c_wpfb_sim : t_wpfb := func_wpfb_set_nof_block_per_sync(c_sdp_wpfb_subbands, c_nof_block_per_sync);
- CONSTANT c_stat_data_sz : NATURAL := c_longword_sz/c_word_sz; -- = 2
+ CONSTANT c_stat_data_sz : NATURAL := c_wpfb_sim.stat_data_sz; -- = 2
- CONSTANT c_percentage : REAL := 0.05; -- percentage that actual value may differ from expected value
- CONSTANT c_lo_factor : REAL := 1.0 - c_percentage; -- lower boundary
- CONSTANT c_hi_factor : REAL := 1.0 + c_percentage; -- higher boundary
+ CONSTANT c_stat_percentage : REAL := 0.05; -- +-percentage margin that actual value may differ from expected value
+ CONSTANT c_stat_lo_factor : REAL := 1.0 - c_stat_percentage; -- lower boundary
+ CONSTANT c_stat_hi_factor : REAL := 1.0 + c_stat_percentage; -- higher boundary
+
+ CONSTANT c_beamlet_output_delta : INTEGER := 2; -- +-delta margin
-- header fields
CONSTANT c_cep_eth_dst_mac : STD_LOGIC_VECTOR(47 DOWNTO 0) := c_sdp_cep_eth_dst_mac; -- 00074306C700 = DOP36-eth0
@@ -117,7 +139,7 @@ ARCHITECTURE tb OF tb_lofar2_unb2c_sdp_station_bf IS
CONSTANT c_exp_ip_header_checksum : NATURAL := 16#5BDE#; -- value obtained from rx_sdp_cep_header.ip.header_checksum in wave window
- CONSTANT c_exp_beamlet_scale : NATURAL := 2**15;
+ CONSTANT c_exp_beamlet_scale : NATURAL := NATURAL(g_beamlet_scale * REAL(c_sdp_unit_beamlet_scale)); -- c_sdp_unit_beamlet_scale = 2**15;
CONSTANT c_exp_sdp_info : t_sdp_info := (
TO_UVEC(601, 16), -- station_id
@@ -135,39 +157,72 @@ ARCHITECTURE tb OF tb_lofar2_unb2c_sdp_station_bf IS
);
-- WG
- CONSTANT c_full_scale_ampl : REAL := REAL(2**(14-1)-1); -- = full scale of WG
CONSTANT c_bsn_start_wg : NATURAL := c_init_bsn + 2; -- start WG at this BSN to instead of some BSN, to avoid mismatches in exact expected data values
- CONSTANT c_ampl_sp_0 : NATURAL := 2**(c_sdp_W_adc-1) / 2; -- in number of lsb
+ -- .ampl
+ CONSTANT c_wg_ampl_full_scale : NATURAL := 2**(c_sdp_W_adc-1); -- full scale (FS) of WG, will just cause clipping of +FS to +FS-1
+ CONSTANT c_wg_ampl_lsb : REAL := c_diag_wg_ampl_unit / REAL(c_wg_ampl_full_scale); -- amplitude in number of LSbit resolution steps
+ CONSTANT c_wg_ampl : NATURAL := NATURAL(g_wg_ampl * REAL(c_wg_ampl_full_scale)); -- in number of lsb
+ CONSTANT c_exp_sp_power : REAL := REAL(c_wg_ampl**2) / 2.0;
+ CONSTANT c_exp_sp_ast : REAL := c_exp_sp_power * REAL(c_nof_clk_per_sync);
+ -- . phase
+ CONSTANT c_subband_phase : REAL := 0.0; -- wanted subband phase in degrees = WG phase at sop
+ CONSTANT c_subband_freq : REAL := REAL(g_subband) / REAL(c_sdp_N_fft); -- normalized by fs = f_adc = 200 MHz = dp_clk rate
+ CONSTANT c_wg_latency : INTEGER := c_diag_wg_latency - 0; -- -0 to account for BSN scheduler start trigger latency
+ CONSTANT c_wg_phase_offset : REAL := 360.0 * REAL(c_wg_latency) * c_subband_freq; -- c_diag_wg_latency is in dp_clk cycles
+ CONSTANT c_wg_phase : REAL := c_subband_phase + c_wg_phase_offset; -- WG phase in degrees
+ -- . freq
CONSTANT c_wg_subband_freq_unit : REAL := c_diag_wg_freq_unit/REAL(c_sdp_N_fft); -- subband freq = Fs/1024 = 200 MSps/1024 = 195312.5 Hz sinus
- CONSTANT c_wg_freq_offset : REAL := 0.0/11.0; -- in freq_unit
- CONSTANT c_subband_sp_0 : REAL := 102.0; -- Select subband at index 102 = 102/1024 * 200MHz = 19.921875 MHz
- CONSTANT c_wg_ampl_lsb : REAL := c_diag_wg_ampl_unit / c_full_scale_ampl; -- amplitude in number of LSbit resolution steps
- CONSTANT c_exp_wg_power_sp_0 : REAL := REAL(c_ampl_sp_0**2)/2.0 * REAL(c_nof_clk_per_sync);
-- WPFB
- CONSTANT c_wb_leakage_bin : NATURAL := c_wpfb_sim.nof_points / c_wpfb_sim.wb_factor; -- = 256, leakage will occur in this bin if FIR wb_factor is reversed
- CONSTANT c_exp_sp_beamlet_power_ratio : REAL := 1.0/8.0; -- depends on internal WPFB quantization and FIR coefficients
- CONSTANT c_exp_sp_beamlet_power_sum_ratio : REAL := c_exp_sp_beamlet_power_ratio; -- because all sinus power is expected in one subband
- CONSTANT c_exp_beamlet_power_sp_0 : REAL := c_exp_wg_power_sp_0 * c_exp_sp_beamlet_power_ratio;
+ CONSTANT c_pol_index : NATURAL := g_sp MOD c_sdp_Q_fft;
+ CONSTANT c_pfb_index : NATURAL := g_sp / c_sdp_Q_fft; -- only read used WPFB unit out of range(c_sdp_P_pfb = 6)
+ CONSTANT c_subband_phase_offset : REAL := -90.0; -- WG with zero phase sinues yields subband with -90 degrees phase (negative Im, zero Re)
+ CONSTANT c_subband_weight_gain : REAL := 1.0; -- use default unit subband weights
+ CONSTANT c_subband_weight_phase : REAL := 0.0; -- use default unit subband weights
+ CONSTANT c_exp_subband_sp_ampl_ratio : REAL := 7.96; -- ~= 8 for unit FIR DC gain, depends on internal WPFB quantization and FIR coefficients
+ CONSTANT c_exp_subband_ampl : REAL := REAL(c_wg_ampl) * c_exp_subband_sp_ampl_ratio * c_subband_weight_gain;
+ CONSTANT c_exp_subband_power : REAL := c_exp_subband_ampl**2.0; -- complex, so no divide by 2
+ CONSTANT c_exp_subband_sst : REAL := c_exp_subband_power * REAL(c_nof_block_per_sync);
TYPE t_real_arr IS ARRAY (INTEGER RANGE <>) OF REAL;
- TYPE t_slv_64_subbands_arr IS ARRAY (INTEGER RANGE <>) OF t_slv_64_arr(0 TO c_sdp_N_sub);
- TYPE t_slv_64_beamlets_arr IS ARRAY (INTEGER RANGE <>) OF t_slv_64_arr(0 TO c_sdp_S_sub_bf);
+ TYPE t_slv_64_subbands_arr IS ARRAY (INTEGER RANGE <>) OF t_slv_64_arr(0 TO c_sdp_N_sub-1); -- 512
+ TYPE t_slv_64_beamlets_arr IS ARRAY (INTEGER RANGE <>) OF t_slv_64_arr(0 TO c_sdp_N_beamlets_sdp-1); -- 2*488 = 976
-- BF
- CONSTANT c_exp_beamlet_index : NATURAL := NATURAL(c_subband_sp_0) * c_sdp_N_pol_bf;
- CONSTANT c_exp_beamlet_re : STD_LOGIC_VECTOR(7 DOWNTO 0) := x"81"; -- = -127, derived from simulation
- CONSTANT c_exp_beamlet_im : STD_LOGIC_VECTOR(7 DOWNTO 0) := x"7F"; -- = +127, derived from simulation
+ -- . select
+ CONSTANT c_exp_beamlet_index : NATURAL := g_beamlet * c_sdp_N_pol_bf; -- in beamset 0
+ -- . Beamlet weights for selected g_sp
+ CONSTANT c_bf_weight_re : INTEGER := INTEGER(g_bf_gain * REAL(c_sdp_unit_bf_weight) * COS(g_bf_phase * MATH_2_PI / 360.0));
+ CONSTANT c_bf_weight_im : INTEGER := INTEGER(g_bf_gain * REAL(c_sdp_unit_bf_weight) * SIN(g_bf_phase * MATH_2_PI / 360.0));
+ -- . Beamlet internal
+ CONSTANT c_exp_beamlet_ampl : REAL := c_exp_subband_ampl * g_bf_gain;
+ CONSTANT c_exp_beamlet_phase : REAL := c_subband_phase_offset + c_subband_weight_phase + g_bf_phase;
+ CONSTANT c_exp_beamlet_re : REAL := c_exp_beamlet_ampl * COS(c_exp_beamlet_phase * MATH_2_PI / 360.0);
+ CONSTANT c_exp_beamlet_im : REAL := c_exp_beamlet_ampl * SIN(c_exp_beamlet_phase * MATH_2_PI / 360.0);
+ -- . BST
+ CONSTANT c_exp_beamlet_power : REAL := c_exp_beamlet_ampl**2.0; -- complex, so no divide by 2
+ CONSTANT c_exp_beamlet_bst : REAL := c_exp_subband_sst * g_bf_gain**2.0; -- = c_exp_beamlet_power * REAL(c_nof_block_per_sync)
+ -- . Beamlet output
+ CONSTANT c_exp_beamlet_output_ampl : REAL := c_exp_beamlet_ampl * g_beamlet_scale;
+ CONSTANT c_exp_beamlet_output_phase : REAL := c_exp_beamlet_phase;
+ CONSTANT c_exp_beamlet_output_re : REAL := c_exp_beamlet_re * g_beamlet_scale;
+ CONSTANT c_exp_beamlet_output_im : REAL := c_exp_beamlet_im * g_beamlet_scale;
-- MM
-- . Address widths of a single MM instance
+ -- . c_sdp_S_pn = 12 instances
+ CONSTANT c_addr_w_reg_diag_wg : NATURAL := 2;
+ -- . c_sdp_N_beamsets = 2 instances
CONSTANT c_addr_w_ram_ss_ss_wide : NATURAL := ceil_log2(c_sdp_P_pfb * c_sdp_S_sub_bf * c_sdp_Q_fft);
- CONSTANT c_addr_w_ram_bf_weights : NATURAL := ceil_log2(c_sdp_N_pol * c_sdp_P_pfb * c_sdp_S_sub_bf * c_sdp_Q_fft);
+ CONSTANT c_addr_w_ram_bf_weights : NATURAL := ceil_log2(c_sdp_N_pol_bf * c_sdp_P_pfb * c_sdp_S_sub_bf * c_sdp_Q_fft);
CONSTANT c_addr_w_reg_bf_scale : NATURAL := 1;
CONSTANT c_addr_w_reg_hdr_dat : NATURAL := ceil_log2(field_nof_words(c_sdp_cep_hdr_field_arr, c_word_w));
CONSTANT c_addr_w_reg_dp_xonoff : NATURAL := 1;
- CONSTANT c_addr_w_ram_st_bst : NATURAL := ceil_log2(c_sdp_S_sub_bf*c_sdp_N_pol*(c_longword_sz/c_word_sz));
+ CONSTANT c_addr_w_ram_st_bst : NATURAL := ceil_log2(c_sdp_S_sub_bf*c_sdp_N_pol_bf*c_stat_data_sz);
-- . Address spans of a single MM instance
+ -- . c_sdp_S_pn = 12 instances
+ CONSTANT c_mm_span_reg_diag_wg : NATURAL := 2**c_addr_w_reg_diag_wg;
+ -- . c_sdp_N_beamsets = 2 instances
CONSTANT c_mm_span_ram_ss_ss_wide : NATURAL := 2**c_addr_w_ram_ss_ss_wide;
CONSTANT c_mm_span_ram_bf_weights : NATURAL := 2**c_addr_w_ram_bf_weights;
CONSTANT c_mm_span_reg_bf_scale : NATURAL := 2**c_addr_w_reg_bf_scale;
@@ -179,11 +234,15 @@ ARCHITECTURE tb OF tb_lofar2_unb2c_sdp_station_bf IS
CONSTANT c_mm_file_reg_bsn_source_v2 : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SOURCE_V2";
CONSTANT c_mm_file_reg_bsn_scheduler_wg : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SCHEDULER";
CONSTANT c_mm_file_reg_diag_wg : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_WG";
+ CONSTANT c_mm_file_ram_equalizer_gains : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_EQUALIZER_GAINS";
+ CONSTANT c_mm_file_reg_dp_selector : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_DP_SELECTOR";
+ CONSTANT c_mm_file_ram_st_sst : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_ST_SST";
CONSTANT c_mm_file_ram_st_bst : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_ST_BST";
CONSTANT c_mm_file_reg_dp_xonoff : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_DP_XONOFF";
- CONSTANT c_mm_file_ram_st_sst : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_ST_SST";
- CONSTANT c_mm_file_reg_sdp_info : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_SDP_INFO";
+ CONSTANT c_mm_file_ram_ss_ss_wide : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_SS_SS_WIDE";
+ CONSTANT c_mm_file_ram_bf_weights : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_BF_WEIGHTS";
CONSTANT c_mm_file_reg_bf_scale : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BF_SCALE";
+ CONSTANT c_mm_file_reg_sdp_info : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_SDP_INFO";
CONSTANT c_mm_file_reg_hdr_dat : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_HDR_DAT"; -- c_sdp_N_beamsets = 2 beamsets
-- Tb
@@ -211,16 +270,32 @@ ARCHITECTURE tb OF tb_lofar2_unb2c_sdp_station_bf IS
-- WG
SIGNAL current_bsn_wg : STD_LOGIC_VECTOR(c_dp_stream_bsn_w-1 DOWNTO 0);
- -- WPFB
- SIGNAL sp_subband_powers_arr2 : t_slv_64_subbands_arr(c_sdp_N_pol-1 DOWNTO 0); -- [sp][sub]
+ -- FSUB
+ -- . Read sp_subband_ssts_arr2 = SST for one WPFB unit that processes g_sp
+ SIGNAL sp_subband_ssts_arr2 : t_slv_64_subbands_arr(c_sdp_N_pol-1 DOWNTO 0); -- [pol][sub], for X,Y pair of A, B
+ SIGNAL sp_subband_sst : REAL := 0.0;
+ SIGNAL stat_data : STD_LOGIC_VECTOR(c_longword_w-1 DOWNTO 0);
+
+ -- . Selector
+ SIGNAL sst_offload_weighted_subbands : STD_LOGIC;
+
+ -- . Subband equalizer
+ SIGNAL sp_subband_weight_re : INTEGER := 0;
+ SIGNAL sp_subband_weight_im : INTEGER := 0;
+ SIGNAL sp_subband_weight_gain : REAL := 0.0;
+ SIGNAL sp_subband_weight_phase : REAL := 0.0;
+
+ -- BF
+ SIGNAL sp_subband_select : NATURAL := 0;
+ SIGNAL sp_subband_select_arr : t_natural_arr(0 TO c_sdp_S_sub_bf * c_sdp_N_pol-1) := (OTHERS => 0); -- Q_fft = N_pol = 2
+ SIGNAL sp_bf_weights_re_arr : t_integer_arr(0 TO c_sdp_S_pn-1) := (OTHERS => 0);
+ SIGNAL sp_bf_weights_im_arr : t_integer_arr(0 TO c_sdp_S_pn-1) := (OTHERS => 0);
+ SIGNAL sp_bf_weights_gain_arr : t_real_arr(0 TO c_sdp_S_pn-1) := (OTHERS => 0.0);
+ SIGNAL sp_bf_weights_phase_arr : t_real_arr(0 TO c_sdp_S_pn-1) := (OTHERS => 0.0);
- SIGNAL sp_beamlet_powers_arr2 : t_slv_64_beamlets_arr(c_sdp_N_beamsets*c_sdp_N_pol_bf-1 DOWNTO 0); -- [sp][sub]
- SIGNAL sp_beamlet_power_0 : REAL;
- SIGNAL sp_beamlet_power_sum : t_real_arr(c_sdp_N_beamsets*c_sdp_N_pol_bf-1 DOWNTO 0) := (OTHERS=>0.0);
- SIGNAL sp_beamlet_power_sum_0 : REAL;
- SIGNAL sp_beamlet_power_ratio_0 : REAL;
- SIGNAL sp_beamlet_power_sum_ratio_0 : REAL;
- SIGNAL sp_beamlet_power_leakage_sum_0 : REAL;
+ SIGNAL pol_beamlet_bsts_arr2 : t_slv_64_beamlets_arr(c_sdp_N_pol_bf-1 DOWNTO 0); -- [pol_bf][blet]
+ SIGNAL pol_beamlet_bst_X_arr : t_real_arr(0 TO c_sdp_N_beamsets-1) := (OTHERS => 0.0); -- [bset]
+ SIGNAL pol_beamlet_bst_Y_arr : t_real_arr(0 TO c_sdp_N_beamsets-1) := (OTHERS => 0.0); -- [bset]
-- 10GbE
SIGNAL rx_beamlet_arr_re : t_slv_8_arr(c_sdp_cep_nof_blocks_per_packet-1 DOWNTO 0); -- [3:0]
@@ -309,7 +384,7 @@ BEGIN
g_sim_node_nr => c_node_nr,
g_wpfb => c_wpfb_sim,
g_bsn_nof_clk_per_sync => c_nof_clk_per_sync,
- g_scope_selected_subband => NATURAL(c_subband_sp_0)
+ g_scope_selected_subband => g_subband
)
PORT MAP (
-- GENERAL
@@ -421,12 +496,14 @@ BEGIN
p_mm_stimuli : PROCESS
VARIABLE v_bsn : NATURAL;
- VARIABLE v_sp_beamlet_power : REAL;
- VARIABLE v_sp_subband_power : REAL;
- VARIABLE v_W, v_T, v_U, v_S, v_B : NATURAL; -- array indicies
- VARIABLE v_re, v_im : INTEGER;
- VARIABLE v_re_exp, v_im_exp : INTEGER;
- VARIABLE v_offset : NATURAL;
+ VARIABLE v_sp_subband_sst : REAL := 0.0;
+ VARIABLE v_pol_beamlet_bst : REAL := 0.0;
+ VARIABLE v_data_lo, v_data_hi : STD_LOGIC_VECTOR(c_word_w-1 DOWNTO 0);
+ VARIABLE v_stat_data : STD_LOGIC_VECTOR(c_longword_w-1 DOWNTO 0);
+ VARIABLE v_len, v_span, v_offset, v_addr, v_sel : NATURAL; -- address ranges, indices
+ VARIABLE v_W, v_P, v_S, v_A, v_B, v_G : NATURAL; -- array indicies
+ VARIABLE v_re, v_im, v_weight : INTEGER;
+ VARIABLE v_re_exp, v_im_exp : REAL := 0.0;
BEGIN
-- Wait for DUT power up after reset
WAIT FOR 1 us;
@@ -474,8 +551,15 @@ BEGIN
------------------------------------------------------------------------------
FOR bset IN 0 TO c_sdp_N_beamsets-1 LOOP
-- MM beamlet_scale
+ -- . write
v_offset := bset * c_mm_span_reg_bf_scale;
- mmf_mm_bus_rd(c_mm_file_reg_bf_scale, v_offset + 0, rd_data, tb_clk); rd_beamlet_scale <= rd_data(15 DOWNTO 0);
+ mmf_mm_bus_wr(c_mm_file_reg_bf_scale, v_offset + 0, c_exp_beamlet_scale, tb_clk);
+ proc_common_wait_some_cycles(tb_clk, c_cross_clock_domain_latency);
+ proc_common_wait_some_cycles(ext_clk, c_cross_clock_domain_latency);
+
+ -- . readback
+ mmf_mm_bus_rd(c_mm_file_reg_bf_scale, v_offset + 0, rd_data, tb_clk);
+ rd_beamlet_scale <= rd_data(15 DOWNTO 0);
proc_common_wait_some_cycles(tb_clk, 1);
ASSERT TO_UINT(rd_beamlet_scale) = c_exp_beamlet_scale REPORT "Wrong MM read beamlet_scale for beamset " & NATURAL'IMAGE(bset) SEVERITY ERROR;
@@ -560,17 +644,19 @@ BEGIN
pps_rst <= '0';
----------------------------------------------------------------------------
- -- Enable WG
+ -- Enable and start WG
----------------------------------------------------------------------------
-- 0 : mode[7:0] --> off=0, calc=1, repeat=2, single=3)
-- nof_samples[31:16] --> <= c_ram_wg_size=1024
-- 1 : phase[15:0]
-- 2 : freq[30:0]
-- 3 : ampl[16:0]
- mmf_mm_bus_wr(c_mm_file_reg_diag_wg, 0, 1024*2**16 + 1, tb_clk); -- nof_samples, mode calc
- mmf_mm_bus_wr(c_mm_file_reg_diag_wg, 1, INTEGER( 0.0 * c_diag_wg_phase_unit), tb_clk); -- phase offset in degrees
- mmf_mm_bus_wr(c_mm_file_reg_diag_wg, 2, INTEGER((c_subband_sp_0+c_wg_freq_offset) * c_wg_subband_freq_unit), tb_clk); -- freq
- mmf_mm_bus_wr(c_mm_file_reg_diag_wg, 3, INTEGER(REAL(c_ampl_sp_0) * c_wg_ampl_lsb), tb_clk); -- ampl
+ -- . Put wanted signal on g_sp input
+ v_offset := g_sp * c_mm_span_reg_diag_wg;
+ mmf_mm_bus_wr(c_mm_file_reg_diag_wg, v_offset + 0, 1024*2**16 + 1, tb_clk); -- nof_samples, mode calc
+ mmf_mm_bus_wr(c_mm_file_reg_diag_wg, v_offset + 1, INTEGER(c_wg_phase * c_diag_wg_phase_unit), tb_clk); -- phase offset in degrees
+ mmf_mm_bus_wr(c_mm_file_reg_diag_wg, v_offset + 2, INTEGER(REAL(g_subband) * c_wg_subband_freq_unit), tb_clk); -- freq
+ mmf_mm_bus_wr(c_mm_file_reg_diag_wg, v_offset + 3, INTEGER(REAL(c_wg_ampl) * c_wg_ampl_lsb), tb_clk); -- ampl
-- Read current BSN
mmf_mm_bus_rd(c_mm_file_reg_bsn_scheduler_wg, 0, current_bsn_wg(31 DOWNTO 0), tb_clk);
@@ -584,7 +670,117 @@ BEGIN
mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_wg, 0, v_bsn, tb_clk); -- first write low then high part
mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_wg, 1, 0, tb_clk); -- assume v_bsn < 2**31-1
+ ----------------------------------------------------------------------------
+ -- Read weighted subband selector
+ ----------------------------------------------------------------------------
+ mmf_mm_bus_rd(c_mm_file_reg_dp_selector, 0, rd_data, tb_clk);
+ sst_offload_weighted_subbands <= NOT rd_data(0);
+ proc_common_wait_some_cycles(tb_clk, 1);
+
+ ----------------------------------------------------------------------------
+ -- Subband weight
+ ----------------------------------------------------------------------------
+
+ -- . MM format: (cint16)RAM_EQUALIZER_GAINS[S_pn/Q_fft]_[Q_fft][N_sub] = [S_pn][N_sub]
+ v_addr := g_sp * c_sdp_N_sub + g_subband;
+ -- . read
+ mmf_mm_bus_rd(c_mm_file_ram_equalizer_gains, v_addr, rd_data, tb_clk);
+ v_re := unpack_complex_re(rd_data, c_sdp_W_sub_weight);
+ v_im := unpack_complex_im(rd_data, c_sdp_W_sub_weight);
+ sp_subband_weight_re <= v_re;
+ sp_subband_weight_im <= v_im;
+ sp_subband_weight_gain <= SQRT(REAL(v_re)**2.0 + REAL(v_im)**2.0) / REAL(c_sdp_unit_sub_weight);
+ sp_subband_weight_phase <= atan2(Y => REAL(v_im), X => REAL(v_re)) * 360.0 / MATH_2_PI;
+
+ -- No need to write subband weight, because default it is unit weight
+
+ ----------------------------------------------------------------------------
+ -- Subband select to map subband to beamlet
+ ----------------------------------------------------------------------------
+ -- . MM format: (uint16)RAM_SS_SS_WIDE[N_beamsets][A_pn]_[S_sub_bf][Q_fft], Q_fft = N_pol = 2
+
+ -- . write selection, only for g_beamlet to save sim time
+ v_span := true_log_pow2(c_sdp_N_pol * c_sdp_S_sub_bf); -- = 1024
+ FOR U IN 0 TO c_sdp_N_beamsets-1 LOOP
+ -- Same selection for both beamsets
+ -- Select beamlet g_beamlet to subband g_subband
+ FOR A IN 0 TO c_sdp_A_pn-1 LOOP
+ -- Same selection to all SP
+ FOR P IN 0 TO c_sdp_N_pol-1 LOOP
+ v_addr := P + g_beamlet * c_sdp_N_pol + A * v_span + U * c_mm_span_ram_ss_ss_wide;
+ v_sel := P + g_subband * c_sdp_N_pol;
+ mmf_mm_bus_wr(c_mm_file_ram_ss_ss_wide, v_addr, v_sel, tb_clk);
+ END LOOP;
+ END LOOP;
+ END LOOP;
+
+ -- . read back selection for g_sp = c_pfb_index * c_sdp_N_pol + c_pol_index
+ v_P := c_pol_index;
+ v_A := c_pfb_index;
+ FOR U IN 0 TO c_sdp_N_beamsets-1 LOOP
+ -- Same selection for both beamsets, so fine to use only one sp_subband_select_arr()
+ FOR B IN 0 TO c_sdp_S_sub_bf-1 LOOP
+ -- Same selection for all SP, so fine to only read subband selection for g_sp
+ v_addr := v_P + B * c_sdp_N_pol + v_A * v_span + U * c_mm_span_ram_ss_ss_wide;
+ mmf_mm_bus_rd(c_mm_file_ram_ss_ss_wide, v_addr, rd_data, tb_clk);
+ v_sel := (TO_UINT(rd_data) - v_P) / c_sdp_N_pol;
+ sp_subband_select_arr(B) <= v_sel;
+ sp_subband_select <= v_sel; -- for time series view in Wave window
+ END LOOP;
+ END LOOP;
+ proc_common_wait_some_cycles(tb_clk, 1);
+ proc_common_wait_some_cycles(ext_clk, 100); -- delay for ease of view in Wave window
+
+ ----------------------------------------------------------------------------
+ -- Write beamlet weight for g_beamlet
+ ----------------------------------------------------------------------------
+ -- . MM format: (cint16)RAM_BF_WEIGHTS[N_beamsets][N_pol_bf][A_pn]_[N_pol][S_sub_bf]
+
+ -- . write BF weights, only for g_beamlet to save sim time
+ v_span := true_log_pow2(c_sdp_N_pol * c_sdp_S_sub_bf); -- = 1024
+ FOR U IN 0 TO c_sdp_N_beamsets-1 LOOP
+ -- Same BF weights for both beamsets
+ FOR A IN 0 TO c_sdp_A_pn-1 LOOP
+ FOR P IN 0 TO c_sdp_N_pol-1 LOOP
+ v_S := A * c_sdp_N_pol + P;
+ IF v_S = g_sp THEN
+ -- use generic BF weight for g_sp in g_beamlet
+ v_weight := pack_complex(re => c_bf_weight_re, im => c_bf_weight_im, w => c_sdp_W_bf_weight);
+ ELSE
+ -- default set all weights to zero
+ v_weight := 0;
+ END IF;
+ v_addr := g_beamlet + A * v_span + U * c_mm_span_ram_bf_weights;
+ v_addr := v_addr + P * c_sdp_S_sub_bf;
+ mmf_mm_bus_wr(c_mm_file_ram_bf_weights, v_addr, v_weight, tb_clk);
+ END LOOP;
+ END LOOP;
+ END LOOP;
+
+ -- . read back BF weights for g_beamlet
+ FOR U IN 0 TO c_sdp_N_beamsets-1 LOOP
+ FOR A IN 0 TO c_sdp_A_pn-1 LOOP
+ FOR P IN 0 TO c_sdp_N_pol-1 LOOP
+ v_addr := g_beamlet + A * v_span + U * c_mm_span_ram_bf_weights;
+ v_addr := v_addr + P * c_sdp_S_sub_bf;
+ mmf_mm_bus_rd(c_mm_file_ram_bf_weights, v_addr, rd_data, tb_clk);
+ v_re := unpack_complex_re(rd_data, c_sdp_W_bf_weight);
+ v_im := unpack_complex_im(rd_data, c_sdp_W_bf_weight);
+ -- same BF weights for both beamsets, so fine to use only one sp_bf_weights_*_arr()
+ v_S := A * c_sdp_N_pol + P;
+ sp_bf_weights_re_arr(v_S) <= v_re;
+ sp_bf_weights_im_arr(v_S) <= v_im;
+ sp_bf_weights_gain_arr(v_S) <= SQRT(REAL(v_re)**2.0 + REAL(v_im)**2.0) / REAL(c_sdp_unit_bf_weight);
+ sp_bf_weights_phase_arr(v_S) <= atan2(Y => REAL(v_im), X => REAL(v_re)) * 360.0 / MATH_2_PI;
+ END LOOP;
+ END LOOP;
+ END LOOP;
+ proc_common_wait_some_cycles(tb_clk, 1);
+ proc_common_wait_some_cycles(ext_clk, 100); -- delay for ease of view in Wave window
+
+ ----------------------------------------------------------------------------
-- Wait for enough WG data and start of sync interval
+ ----------------------------------------------------------------------------
mmf_mm_wait_until_value(c_mm_file_reg_bsn_scheduler_wg, 0, -- read BSN low
"UNSIGNED", rd_data, ">=", c_init_bsn + c_nof_block_per_sync*3, -- this is the wait until condition
c_sdp_T_sub, tb_clk);
@@ -595,135 +791,186 @@ BEGIN
---------------------------------------------------------------------------
-- Read subband statistics
---------------------------------------------------------------------------
- -- . the subband statistics are c_wpfb_sim.stat_data_sz = 2 word power values.
- -- . there are c_sdp_N_sub = 512 subbands per signal path
- -- . one complex WPFB can process two real inputs A, B, is c_sdp_Q_fft = c_sdp_N_pol = 2
+ -- . the subband statistics are c_stat_data_sz = 2 word power values.
+ -- . there are c_sdp_S_pn = 12 signal inputs A, B, C, D, E, F, G, H, I, J, K, L
+ -- . there are c_sdp_N_sub = 512 subbands per signal input (SI, = signal path, SP)
+ -- . one complex WPFB can process two real inputs A, B, so there are c_sdp_P_pfb = 6 WPFB units,
+ -- but only read for the 1 WPFB unit of the selected g_sp, to save sim time
+ -- . the outputs for A, B are time multiplexed, c_sdp_Q_fft = 2, assume that they
+ -- correspond to the c_sdp_N_pol = 2 signal polarizations
-- . the subbands are output alternately so A0 B0 A1 B1 ... A511 B511 for input A, B
-- . the subband statistics multiple WPFB units appear in order in the ram_st_sst address map
-- . the subband statistics are stored first lo word 0 then hi word 1
-
- FOR I IN 0 TO c_sdp_N_pol*c_sdp_N_sub*c_stat_data_sz-1 LOOP -- 2048 = 2 * 512 * 64/32
- v_W := I MOD c_stat_data_sz; -- 0, 1 per statistics word
- v_T := (I / c_stat_data_sz) MOD c_sdp_N_pol; -- 0, 1 per pol
- v_U := I / (c_sdp_N_pol*c_stat_data_sz*c_sdp_N_sub); -- / 2048
- v_S := v_T + v_U * c_sdp_N_pol;
- v_B := (I / (c_sdp_N_pol*c_stat_data_sz)) MOD c_sdp_N_sub; -- 0:511 per dual pol
- -- Only read sp 0, pol 0 (v_S = 0)
- IF v_S=0 THEN
+ v_len := c_sdp_N_sub * c_sdp_N_pol * c_stat_data_sz; -- 2048 = 512 * 2 * 64/32
+ v_span := true_log_pow2(v_len); -- = 2048
+ FOR I IN 0 TO v_len-1 LOOP
+ v_W := I MOD c_stat_data_sz; -- 0, 1 per statistics word, word index
+ v_P := (I / c_stat_data_sz) MOD c_sdp_N_pol; -- 0, 1 per SP pol, polarization index
+ v_B := I / (c_sdp_N_pol * c_stat_data_sz); -- subband index, range(N_sub = 512) per dual pol
+ v_addr := I + c_pfb_index * v_span; -- MM address
+ -- Only read SST for g_subband for dual pol SP, to save sim time
+ IF g_read_all_SST = TRUE OR v_B = g_subband THEN
IF v_W=0 THEN
-- low part
- mmf_mm_bus_rd(c_mm_file_ram_st_sst, I, rd_data, tb_clk);
- sp_subband_powers_arr2(v_S)(v_B)(31 DOWNTO 0) <= rd_data;
+ mmf_mm_bus_rd(c_mm_file_ram_st_sst, v_addr, rd_data, tb_clk);
+ v_data_lo := rd_data;
ELSE
-- high part
- mmf_mm_bus_rd(c_mm_file_ram_st_sst, I, rd_data, tb_clk);
- sp_subband_powers_arr2(v_S)(v_B)(63 DOWNTO 32) <= rd_data;
+ mmf_mm_bus_rd(c_mm_file_ram_st_sst, v_addr, rd_data, tb_clk);
+ v_data_hi := rd_data;
+ v_stat_data := v_data_hi & v_data_lo;
+
+ sp_subband_ssts_arr2(v_P)(v_B) <= v_stat_data;
+ stat_data <= v_stat_data; -- for time series view in Wave window
END IF;
END IF;
END LOOP;
+ proc_common_wait_some_cycles(tb_clk, 1);
+
+ -- Subband power of g_subband in g_sp
+ -- . For the selected g_subband in g_sp the sp_subband_sst will be close
+ -- to sp_subband_sst_sum_arr(c_pol_index), because the input is a
+ -- sinus, so most power will be in 1 subband.
+ sp_subband_sst <= TO_UREAL(sp_subband_ssts_arr2(c_pol_index)(g_subband));
+ proc_common_wait_some_cycles(tb_clk, 1);
+ proc_common_wait_some_cycles(ext_clk, 100); -- delay for ease of view in Wave window
---------------------------------------------------------------------------
-- Read beamlet statistics
---------------------------------------------------------------------------
-- . the beamlet statistics are c_stat_data_sz = 2 word power values.
- -- . there are c_sdp_S_sub_bf = 488 subbands per signal path
- -- . the subbands are output alternately so A0 B0 A1 B1 ... A5487 B487 for input A, B
- -- . the subband statistics multiple units appear in order in the ram_st_bst address map
- -- . the subband statistics are stored first lo word 0 then hi word 1
- FOR I IN 0 TO c_sdp_N_pol_bf*c_sdp_S_sub_bf*c_stat_data_sz-1 LOOP
- v_W := I MOD c_stat_data_sz;
- v_T := (I / c_stat_data_sz) MOD c_sdp_N_pol_bf;
- v_U := I / (c_sdp_N_pol_bf*c_stat_data_sz*c_sdp_S_sub_bf);
- v_S := v_T + v_U * c_sdp_N_pol_bf;
- v_B := (I / (c_sdp_N_pol_bf*c_stat_data_sz)) MOD c_sdp_S_sub_bf;
- -- Only read beamset 0, pol 0 (v_S = 0)
- IF v_S=0 THEN
- IF v_W=0 THEN
- -- low part
- --mmf_mm_bus_rd(c_mm_file_ram_st_bst, I+(c_sdp_N_pol_bf*c_sdp_N_sub*c_stat_data_sz), rd_data, tb_clk);
- mmf_mm_bus_rd(c_mm_file_ram_st_bst, I, rd_data, tb_clk);
- sp_beamlet_powers_arr2(v_S)(v_B)(31 DOWNTO 0) <= rd_data;
- ELSE
- -- high part
- --mmf_mm_bus_rd(c_mm_file_ram_st_bst, I+(c_sdp_N_pol_bf*c_sdp_N_sub*c_stat_data_sz), rd_data, tb_clk);
- mmf_mm_bus_rd(c_mm_file_ram_st_bst, I, rd_data, tb_clk);
- sp_beamlet_powers_arr2(v_S)(v_B)(63 DOWNTO 32) <= rd_data;
-
- -- Convert STD_LOGIC_VECTOR to REAL
- v_sp_beamlet_power := REAL(TO_UINT(rd_data(29 DOWNTO 0) &
- sp_beamlet_powers_arr2(v_S)(v_B)(31 DOWNTO 30)))*2.0**30 +
- REAL(TO_UINT(sp_beamlet_powers_arr2(v_S)(v_B)(29 DOWNTO 0)));
- -- sum
- sp_beamlet_power_sum(v_S) <= sp_beamlet_power_sum(v_S) + v_sp_beamlet_power;
+ -- . there are c_sdp_S_sub_bf = 488 dual pol beamlets per beamset
+ -- . the beamlets are output alternately so X0 Y0 X1 Y1 ... X487 Y487 for polarizations X, Y
+ -- . the beamlet statistics for multiple beamsets appear in order in the ram_st_bst address map
+ -- . the beamlet statistics are stored first lo word 0 then hi word 1
+ v_len := c_sdp_S_sub_bf * c_sdp_N_pol_bf * c_stat_data_sz; -- = 1952 = 488 * 2 * 64/32
+ v_span := true_log_pow2(v_len); -- = 2048
+ FOR U IN 0 TO c_sdp_N_beamsets-1 LOOP
+ FOR I IN 0 TO v_len-1 LOOP
+ v_W := I MOD c_stat_data_sz; -- 0, 1 per statistics word, word index
+ v_P := (I / c_stat_data_sz) MOD c_sdp_N_pol_bf; -- 0, 1 per BF pol, polarization index
+ v_B := I / (c_sdp_N_pol_bf * c_stat_data_sz); -- beamlet index in beamset, range(S_sub_bf = 488) per dual pol
+ v_G := v_B + U * c_sdp_S_sub_bf; -- global beamlet index, range(c_sdp_N_beamlets_sdp)
+ v_addr := I + U * v_span; -- MM address
+ --Only read BST for g_beamlet and dual pol_bf 0 and 1 and for both beamsets, to save sim time
+ IF g_read_all_BST = TRUE OR v_B = g_beamlet THEN
+ IF v_W = 0 THEN
+ -- low part
+ mmf_mm_bus_rd(c_mm_file_ram_st_bst, v_addr, rd_data, tb_clk);
+ v_data_lo := rd_data;
+ ELSE
+ -- high part
+ mmf_mm_bus_rd(c_mm_file_ram_st_bst, v_addr, rd_data, tb_clk);
+ v_data_hi := rd_data;
+ v_stat_data := v_data_hi & v_data_lo;
+
+ pol_beamlet_bsts_arr2(v_P)(v_G) <= v_stat_data;
+ stat_data <= v_stat_data; -- for time series view in Wave window
+ END IF;
END IF;
- END IF;
+ END LOOP;
END LOOP;
+ proc_common_wait_some_cycles(tb_clk, 1);
- -- sp_beamlet_power_sum is the sum of all subband powers per SP, this value will be close to sp_beamlet_power
- -- because the input is a sinus, so most power will be in 1 subband. The sp_beamlet_power_leakage_sum shows
- -- how much power from the input sinus at a specific subband has leaked into the 511 other subbands.
- sp_beamlet_power_0 <=
- REAL(TO_UINT(sp_beamlet_powers_arr2(0)(INTEGER(ROUND(c_subband_sp_0)))(61 DOWNTO 30)))*2.0**30 +
- REAL(TO_UINT(sp_beamlet_powers_arr2(0)(INTEGER(ROUND(c_subband_sp_0)))(29 DOWNTO 0)));
-
- sp_beamlet_power_sum_0 <= sp_beamlet_power_sum(0);
-
+ -- Beamlet power of g_beamlet X and Y, same for both beamsets
+ FOR U IN 0 TO c_sdp_N_beamsets-1 LOOP
+ v_G := g_beamlet + U * c_sdp_S_sub_bf; -- global beamlet index, range(c_sdp_N_beamlets_sdp)
+ pol_beamlet_bst_X_arr(U) <= TO_UREAL(pol_beamlet_bsts_arr2(0)(v_G)); -- X pol beamlet
+ pol_beamlet_bst_Y_arr(U) <= TO_UREAL(pol_beamlet_bsts_arr2(1)(v_G)); -- Y pol beamlet
+ END LOOP;
proc_common_wait_some_cycles(tb_clk, 1);
+ proc_common_wait_some_cycles(ext_clk, 100); -- delay for ease of view in Wave window
---------------------------------------------------------------------------
- -- Verify subband statistics
+ -- Log WG, subband and beamlet statistics
---------------------------------------------------------------------------
- FOR I IN 0 TO c_sdp_N_pol*c_sdp_S_sub_bf-1 LOOP
- v_T := I MOD c_sdp_N_pol;
- v_U := I / (c_sdp_N_pol*c_sdp_S_sub_bf);
- v_S := v_T + v_U * c_sdp_N_pol;
- v_B := (I / c_sdp_N_pol) MOD c_sdp_S_sub_bf;
- IF v_S=0 THEN
- -- Convert STD_LOGIC_VECTOR to REAL
- v_sp_beamlet_power := REAL(TO_UINT(rd_data(29 DOWNTO 0) &
- sp_beamlet_powers_arr2(v_S)(v_B)(31 DOWNTO 30)))*2.0**30 +
- REAL(TO_UINT(sp_beamlet_powers_arr2(v_S)(v_B)(29 DOWNTO 0)));
- -- Convert STD_LOGIC_VECTOR to REAL
- v_sp_subband_power := REAL(TO_UINT(rd_data(29 DOWNTO 0) &
- sp_subband_powers_arr2(v_S)(v_B)(31 DOWNTO 30)))*2.0**30 +
- REAL(TO_UINT(sp_subband_powers_arr2(v_S)(v_B)(29 DOWNTO 0)));
+ print_str("");
+ print_str("WG:");
+ print_str(". c_wg_ampl = " & int_to_str(c_wg_ampl));
+ print_str(". c_exp_sp_power = " & real_to_str(c_exp_sp_power, 20, 1));
+ print_str(". c_exp_sp_ast = " & real_to_str(c_exp_sp_ast, 20, 1));
- -- verify if subband power and beamlet power are the same. This is expected because we only use 1 WG input and the BF weights have unit value.
- -- the difference should not be larger than 0.5% (+/- 2^13 for low values)
- ASSERT v_sp_beamlet_power > 0.995 * v_sp_subband_power -2.0**13 REPORT "index ("& integer'image(v_S) &","& integer'image(v_B) &"): Subband power = "& real'image(v_sp_subband_power) &" and Beamlet power = "& real'image(v_sp_beamlet_power) &" are not equal" SEVERITY ERROR;
- ASSERT v_sp_beamlet_power < 1.005 * v_sp_subband_power +2.0**13 REPORT "index ("& integer'image(v_S) &","& integer'image(v_B) &"): Subband power = "& real'image(v_sp_subband_power) &" and Beamlet power = "& real'image(v_sp_beamlet_power) &" are not equal" SEVERITY ERROR;
- END IF;
+ print_str("");
+ print_str("Subband selector:");
+ print_str(". sst_offload_weighted_subbands = " & sl_to_str(sst_offload_weighted_subbands));
+
+ print_str("");
+ print_str("Subband weight:");
+ print_str(". sp_subband_weight_gain = " & real_to_str(sp_subband_weight_gain, 20, 6));
+ print_str(". sp_subband_weight_phase = " & real_to_str(sp_subband_weight_phase, 20, 6));
+
+ print_str("");
+ print_str("SST results:");
+ print_str(". c_exp_subband_ampl = " & int_to_str(NATURAL(c_exp_subband_ampl)));
+ print_str(". c_exp_subband_power = " & real_to_str(c_exp_subband_power, 20, 1));
+ print_str(". c_exp_subband_sst = " & real_to_str(c_exp_subband_sst, 20, 1));
+ print_str("");
+ print_str(". sp_subband_sst = " & real_to_str(sp_subband_sst, 20, 1));
+ print_str(". sp_subband_sst / c_exp_subband_sst = " & real_to_str(sp_subband_sst / c_exp_subband_sst, 20, 6));
+
+ print_str("");
+ print_str("BST results:");
+ print_str(". c_exp_beamlet_ampl = " & int_to_str(NATURAL(c_exp_beamlet_ampl)));
+ print_str(". c_exp_beamlet_power = " & real_to_str(c_exp_beamlet_power, 20, 1));
+ print_str(". c_exp_beamlet_bst = " & real_to_str(c_exp_beamlet_bst, 20, 1));
+ print_str("");
+ FOR U IN 0 TO c_sdp_N_beamsets-1 LOOP
+ v_G := g_beamlet + U * c_sdp_S_sub_bf; -- global beamlet index, range(c_sdp_N_beamlets_sdp)
+ print_str(". pol_beamlet_bst_X beamlet(" & INTEGER'IMAGE(v_G) & ") = " & real_to_str(pol_beamlet_bst_X_arr(U), 20, 1));
+ print_str(". pol_beamlet_bst_Y beamlet(" & INTEGER'IMAGE(v_G) & ") = " & real_to_str(pol_beamlet_bst_Y_arr(U), 20, 1));
+ END LOOP;
+ FOR U IN 0 TO c_sdp_N_beamsets-1 LOOP
+ v_G := g_beamlet + U * c_sdp_S_sub_bf; -- global beamlet index, range(c_sdp_N_beamlets_sdp)
+ print_str(". pol_beamlet_bst_X beamlet(" & INTEGER'IMAGE(v_G) & ") / c_exp_beamlet_bst = " & real_to_str(pol_beamlet_bst_X_arr(U) / c_exp_beamlet_bst, 20, 6));
+ print_str(". pol_beamlet_bst_Y beamlet(" & INTEGER'IMAGE(v_G) & ") / c_exp_beamlet_bst = " & real_to_str(pol_beamlet_bst_Y_arr(U) / c_exp_beamlet_bst, 20, 6));
END LOOP;
- -- verify expected subband power based on WG power
- IF sp_beamlet_power_sum_0>0.0 THEN ASSERT sp_beamlet_power_0 > c_lo_factor * c_exp_beamlet_power_sp_0 REPORT "Wrong beamlet power for SP 0" SEVERITY ERROR; END IF;
- IF sp_beamlet_power_sum_0>0.0 THEN ASSERT sp_beamlet_power_0 < c_hi_factor * c_exp_beamlet_power_sp_0 REPORT "Wrong beamlet power for SP 0" SEVERITY ERROR; END IF;
+ print_str("");
+ print_str("Beamlet output:");
+ print_str(". rd_beamlet_scale = " & int_to_str(TO_UINT(rd_beamlet_scale)));
+ print_str(". c_exp_beamlet_output_ampl = " & int_to_str(NATURAL(c_exp_beamlet_output_ampl)));
- -- view c_exp_sp_beamlet_power_ratio in Wave window
- IF sp_beamlet_power_sum_0>0.0 THEN sp_beamlet_power_ratio_0 <= sp_beamlet_power_0/sp_beamlet_power_sum_0; END IF;
+ ---------------------------------------------------------------------------
+ -- Verify SST and BST
+ ---------------------------------------------------------------------------
- -- view c_exp_sp_beamlet_power_sum_ratio in Wave window
- -- The sp_beamlet_power_sum_ratio show similar information as sp_beamlet_power_leakage_sum, because when
- -- sp_beamlet_power_leakage_sum is small then sp_beamlet_power_sum_ratio ~= sp_beamlet_power_ratio.
- IF sp_beamlet_power_sum_0>0.0 THEN sp_beamlet_power_sum_ratio_0 <= sp_beamlet_power_sum_0/sp_beamlet_power_0; END IF;
-
- -- View sp_beamlet_power_leakage_sum in Wave window
- IF sp_beamlet_power_sum_0>0.0 THEN sp_beamlet_power_leakage_sum_0 <= sp_beamlet_power_sum_0 - sp_beamlet_power_0; END IF;
+ -- verify expected subband power based on WG power
+ ASSERT sp_subband_sst > c_stat_lo_factor * c_exp_subband_sst REPORT "Wrong subband power for SP " & NATURAL'IMAGE(g_sp) SEVERITY ERROR;
+ ASSERT sp_subband_sst < c_stat_hi_factor * c_exp_subband_sst REPORT "Wrong subband power for SP " & NATURAL'IMAGE(g_sp) SEVERITY ERROR;
+
+ -- verify expected beamlet power based on WG power and BF weigths
+ --
+ -- All co and cross polarization weights are equal: w = w_xx = w_xy = w_yx = w_yy
+ -- With one g_sp either SP X or SP Y is used, so the other antenna polarization is 0
+ -- Hence the c_exp_beamlet_bst will be the same for beamlet X and Y independent of whether g_sp is an X or Y signal input:
+ -- g_sp = X --> w_xx --> beamlet X = c_exp_beamlet_bst
+ -- g_sp = Y --> w_xy --> beamlet X = c_exp_beamlet_bst
+ -- g_sp = X --> w_yx --> beamlet Y = c_exp_beamlet_bst
+ -- g_sp = Y --> w_yy --> beamlet Y = c_exp_beamlet_bst
+ --
+ FOR U IN 0 TO c_sdp_N_beamsets-1 LOOP
+ ASSERT pol_beamlet_bst_X_arr(U) > c_stat_lo_factor * c_exp_beamlet_bst REPORT "Wrong beamlet power for X in beamset " & NATURAL'IMAGE(U) SEVERITY ERROR;
+ ASSERT pol_beamlet_bst_X_arr(U) < c_stat_hi_factor * c_exp_beamlet_bst REPORT "Wrong beamlet power for X in beamset " & NATURAL'IMAGE(U) SEVERITY ERROR;
+ ASSERT pol_beamlet_bst_Y_arr(U) > c_stat_lo_factor * c_exp_beamlet_bst REPORT "Wrong beamlet power for Y in beamset " & NATURAL'IMAGE(U) SEVERITY ERROR;
+ ASSERT pol_beamlet_bst_Y_arr(U) < c_stat_hi_factor * c_exp_beamlet_bst REPORT "Wrong beamlet power for Y in beamset " & NATURAL'IMAGE(U) SEVERITY ERROR;
+ END LOOP;
---------------------------------------------------------------------------
- -- Verify 10GbE UDP offload
+ -- Verify beamlet output in 10GbE UDP offload
---------------------------------------------------------------------------
- v_re := TO_SINT(rx_beamlet_list_re(c_exp_beamlet_index)); v_re_exp := TO_SINT(c_exp_beamlet_re);
- v_im := TO_SINT(rx_beamlet_list_im(c_exp_beamlet_index)); v_im_exp := TO_SINT(c_exp_beamlet_im);
- ASSERT v_re = v_re_exp REPORT "Wrong 10GbE output (re) " & INTEGER'IMAGE(v_re) & " != " & INTEGER'IMAGE(v_re_exp) SEVERITY ERROR;
- ASSERT v_im = v_im_exp REPORT "Wrong 10GbE output (im) " & INTEGER'IMAGE(v_re) & " != " & INTEGER'IMAGE(v_re_exp) SEVERITY ERROR;
+ v_re := TO_SINT(rx_beamlet_list_re(c_exp_beamlet_index)); v_re_exp := c_exp_beamlet_output_re;
+ v_im := TO_SINT(rx_beamlet_list_im(c_exp_beamlet_index)); v_im_exp := c_exp_beamlet_output_im;
+ ASSERT v_re > INTEGER(v_re_exp) - c_beamlet_output_delta REPORT "Wrong 10GbE output (re) " & INTEGER'IMAGE(v_re) & " != " & REAL'IMAGE(v_re_exp) SEVERITY ERROR;
+ ASSERT v_re < INTEGER(v_re_exp) + c_beamlet_output_delta REPORT "Wrong 10GbE output (re) " & INTEGER'IMAGE(v_re) & " != " & REAL'IMAGE(v_re_exp) SEVERITY ERROR;
+ ASSERT v_im > INTEGER(v_im_exp) - c_beamlet_output_delta REPORT "Wrong 10GbE output (im) " & INTEGER'IMAGE(v_im) & " != " & REAL'IMAGE(v_im_exp) SEVERITY ERROR;
+ ASSERT v_im < INTEGER(v_im_exp) + c_beamlet_output_delta REPORT "Wrong 10GbE output (im) " & INTEGER'IMAGE(v_im) & " != " & REAL'IMAGE(v_im_exp) SEVERITY ERROR;
---------------------------------------------------------------------------
-- End Simulation
---------------------------------------------------------------------------
tb_almost_end <= '1';
- proc_common_wait_some_cycles(ext_clk, 100);
+ proc_common_wait_some_cycles(ext_clk, 100); -- delay for ease of view in Wave window
proc_common_stop_simulation(TRUE, ext_clk, tb_almost_end, tb_end);
WAIT;
END PROCESS;
@@ -852,7 +1099,7 @@ BEGIN
FOR I IN 0 TO (c_sdp_cep_nof_blocks_per_packet * c_sdp_cep_nof_beamlets_per_block/2)-1 LOOP
proc_common_wait_until_high(ext_clk, test_offload_sosi.valid);
rx_beamlet_valid <= '1';
- -- Capture rx beamlets per longword in rx_beamlet_arr
+ -- Capture rx beamlets per longword in rx_beamlet_arr, for time series view in Wave window
rx_beamlet_arr_re(0) <= test_offload_sosi.data(55 DOWNTO 48); -- X
rx_beamlet_arr_im(0) <= test_offload_sosi.data(63 DOWNTO 56);
rx_beamlet_arr_re(1) <= test_offload_sosi.data(39 DOWNTO 32); -- Y
@@ -863,13 +1110,13 @@ BEGIN
rx_beamlet_arr_im(3) <= test_offload_sosi.data(15 DOWNTO 8);
IF I < c_sdp_cep_nof_beamlets_per_block/2 THEN
-- Only capture the first beamlets block of each packet in rx_beamlet_list
- rx_beamlet_list_re(I*4 + 0) <= test_offload_sosi.data(55 DOWNTO 48);
+ rx_beamlet_list_re(I*4 + 0) <= test_offload_sosi.data(55 DOWNTO 48); -- X
rx_beamlet_list_im(I*4 + 0) <= test_offload_sosi.data(63 DOWNTO 56);
- rx_beamlet_list_re(I*4 + 1) <= test_offload_sosi.data(39 DOWNTO 32);
+ rx_beamlet_list_re(I*4 + 1) <= test_offload_sosi.data(39 DOWNTO 32); -- Y
rx_beamlet_list_im(I*4 + 1) <= test_offload_sosi.data(47 DOWNTO 40);
- rx_beamlet_list_re(I*4 + 2) <= test_offload_sosi.data(23 DOWNTO 16);
+ rx_beamlet_list_re(I*4 + 2) <= test_offload_sosi.data(23 DOWNTO 16); -- X
rx_beamlet_list_im(I*4 + 2) <= test_offload_sosi.data(31 DOWNTO 24);
- rx_beamlet_list_re(I*4 + 3) <= test_offload_sosi.data( 7 DOWNTO 0);
+ rx_beamlet_list_re(I*4 + 3) <= test_offload_sosi.data( 7 DOWNTO 0); -- Y
rx_beamlet_list_im(I*4 + 3) <= test_offload_sosi.data(15 DOWNTO 8);
END IF;
proc_common_wait_until_high(ext_clk, test_offload_sosi.valid);
diff --git a/applications/lofar2/designs/lofar2_unb2c_sdp_station/revisions/lofar2_unb2c_sdp_station_fsub/tb_lofar2_unb2c_sdp_station_fsub.vhd b/applications/lofar2/designs/lofar2_unb2c_sdp_station/revisions/lofar2_unb2c_sdp_station_fsub/tb_lofar2_unb2c_sdp_station_fsub.vhd
index c28b78463e1570614b135e582e07f9291283c770..ef550d46f766c8083a10c39f05cfa4133039c085 100644
--- a/applications/lofar2/designs/lofar2_unb2c_sdp_station/revisions/lofar2_unb2c_sdp_station_fsub/tb_lofar2_unb2c_sdp_station_fsub.vhd
+++ b/applications/lofar2/designs/lofar2_unb2c_sdp_station/revisions/lofar2_unb2c_sdp_station_fsub/tb_lofar2_unb2c_sdp_station_fsub.vhd
@@ -20,7 +20,7 @@
-------------------------------------------------------------------------------
--
--- Author: R. van der Walle
+-- Author: R. van der Walle (original), E. Kooistra (updates)
-- Purpose: Self-checking testbench for simulating lofar2_unb2c_sdp_station_fsub using WG data.
--
-- Description:
@@ -29,44 +29,68 @@
-- 1) Enable calc mode for WG via reg_diag_wg with:
-- freq = 19.921875MHz
-- ampl = 0.5 * 2**13
---
--- 2) Read current BSN from reg_bsn_scheduler_wg and write reg_bsn_scheduler_wg
+--
+-- 2) Read current BSN from reg_bsn_scheduler_wg and write reg_bsn_scheduler_wg
-- to trigger start of WG at BSN.
---
--- 3) Read subband statistics (SST) via ram_st_sst and verify with
--- c_exp_subband_power_sp_0 at c_subband_sp_0.
--- View sp_subband_power_0 in Wave window
---
+--
+-- 3) Read subband statistics (SST) via MM and verify with exp_subband_sst at g_subband.
+-- . use weighted subbands (default selected by MM)
+--
+-- 4) View in wave window
+-- . in_sosi.sop and in_data in u_si_arr(g_sp) to check that:
+-- - WG starts with zero phase sine when c_subband_phase = 0.0 degrees
+-- - WG amplitude = 8191 (is full scale - 1) when wg_ampl = 1.0
+-- . pfb_sosi_arr(c_pfb_index).im/re and fsub_sosi_arr(c_pfb_index).im/re
+-- in u_fsub in decimal radix and analog format to check that subband
+-- phase is g_subband_weight_phase phase as set by the subband weight.
+-- - Raw: pfb_sosi_arr = atan2(-65195 / 0) = -90 degrees
+-- - Weighted: fsub_sosi_arr = atan2(-56457 / 32598) = -60 degrees
+-- --> rotated expected g_subband_weight_phase = -60 - -90 = +30 degrees.
--
-- Usage:
-- > as 7 # default
-- > as 12 # for detailed debugging
--- > run -a
+-- # Manually add missing signal
+-- > add wave -position insertpoint \
+-- sim:/tb_lofar2_unb2c_sdp_station_fsub/sp_subband_ssts_arr2
+-- > run -a
+-- # Takes about 30 m when g_read_all_SST = FALSE
+-- # Takes about 40 m when g_read_all_SST = TRUE
--
-------------------------------------------------------------------------------
LIBRARY IEEE, common_lib, unb2c_board_lib, i2c_lib, mm_lib, dp_lib, diag_lib, lofar2_sdp_lib, wpfb_lib, lofar2_unb2c_sdp_station_lib;
USE IEEE.std_logic_1164.ALL;
USE IEEE.numeric_std.ALL;
-USE IEEE.MATH_REAL.ALL;
+USE IEEE.math_real.ALL;
USE common_lib.common_pkg.ALL;
-USE unb2c_board_lib.unb2c_board_pkg.ALL;
USE common_lib.tb_common_pkg.ALL;
USE common_lib.common_str_pkg.ALL;
USE mm_lib.mm_file_pkg.ALL;
-USE dp_lib.dp_stream_pkg.ALL;
USE mm_lib.mm_file_unb_pkg.ALL;
+USE dp_lib.dp_stream_pkg.ALL;
USE diag_lib.diag_pkg.ALL;
USE wpfb_lib.wpfb_pkg.ALL;
USE lofar2_sdp_lib.sdp_pkg.ALL;
+USE unb2c_board_lib.unb2c_board_pkg.ALL;
ENTITY tb_lofar2_unb2c_sdp_station_fsub IS
+ GENERIC (
+ g_sp : NATURAL := 3; -- signal path index in range(S_pn = 12)
+ g_wg_ampl : REAL := 1.0; -- WG normalized amplitude
+ g_subband : NATURAL := 102; -- select subband at index 102 = 102/1024 * 200MHz = 19.921875 MHz
+ g_subband_weight_gain : REAL := 1.0; -- subband weight normalized gain
+ g_subband_weight_phase : REAL := 30.0; -- subband weight phase rotation in degrees
+ g_read_all_SST : BOOLEAN := TRUE -- when FALSE only read SST for g_subband, to save sim time
+ );
END tb_lofar2_unb2c_sdp_station_fsub;
ARCHITECTURE tb OF tb_lofar2_unb2c_sdp_station_fsub IS
CONSTANT c_sim : BOOLEAN := TRUE;
CONSTANT c_unb_nr : NATURAL := 0; -- UniBoard 0
- CONSTANT c_node_nr : NATURAL := 0;
+ CONSTANT c_node_nr : NATURAL := 0;
+ CONSTANT c_init_bsn : NATURAL := 17; -- some recognizable value >= 0
+
CONSTANT c_id : STD_LOGIC_VECTOR(7 DOWNTO 0) := "00000000";
CONSTANT c_version : STD_LOGIC_VECTOR(1 DOWNTO 0) := "00";
CONSTANT c_fw_version : t_unb2c_board_fw_version := (1, 0);
@@ -78,63 +102,108 @@ ARCHITECTURE tb OF tb_lofar2_unb2c_sdp_station_fsub IS
CONSTANT c_tb_clk_period : TIME := 100 ps; -- use fast tb_clk to speed up M&C
CONSTANT c_nof_block_per_sync : NATURAL := 16;
- CONSTANT c_nof_clk_per_sync : NATURAL := c_nof_block_per_sync*c_sdp_N_fft - (c_sdp_N_fft/2); --15.5 block per sync
+ CONSTANT c_nof_clk_per_sync : NATURAL := c_nof_block_per_sync * c_sdp_N_fft;
CONSTANT c_pps_period : NATURAL := c_nof_clk_per_sync;
CONSTANT c_wpfb_sim : t_wpfb := func_wpfb_set_nof_block_per_sync(c_sdp_wpfb_subbands, c_nof_block_per_sync);
-
+ CONSTANT c_stat_data_sz : NATURAL := c_wpfb_sim.stat_data_sz; -- = 2
+
CONSTANT c_percentage : REAL := 0.05; -- percentage that actual value may differ from expected value
- CONSTANT c_lo_factor : REAL := 1.0 - c_percentage; -- lower boundary
+ CONSTANT c_lo_factor : REAL := 1.0 - c_percentage; -- lower boundary
CONSTANT c_hi_factor : REAL := 1.0 + c_percentage; -- higher boundary
-- WG
- CONSTANT c_full_scale_ampl : REAL := REAL(2**(14-1)-1); -- = full scale of WG
- CONSTANT c_bsn_start_wg : NATURAL := 2; -- start WG at this BSN to instead of some BSN, to avoid mismatches in exact expected data values
- CONSTANT c_ampl_sp_0 : NATURAL := 2**(c_sdp_W_adc-1)/2; -- in number of lsb
+ CONSTANT c_bsn_start_wg : NATURAL := c_init_bsn + 2; -- start WG at this BSN to instead of some BSN, to avoid mismatches in exact expected data values
+ -- .ampl
+ CONSTANT c_wg_ampl_full_scale : NATURAL := 2**(c_sdp_W_adc-1); -- full scale (FS) of WG, will just cause clipping of +FS to +FS-1
+ CONSTANT c_wg_ampl_lsb : REAL := c_diag_wg_ampl_unit / REAL(c_wg_ampl_full_scale); -- amplitude in number of LSbit resolution steps
+ CONSTANT c_wg_ampl : NATURAL := NATURAL(g_wg_ampl * REAL(c_wg_ampl_full_scale)); -- in number of lsb
+ CONSTANT c_exp_sp_power : REAL := REAL(c_wg_ampl**2) / 2.0;
+ CONSTANT c_exp_sp_ast : REAL := c_exp_sp_power * REAL(c_nof_clk_per_sync);
+ -- . phase
+ CONSTANT c_subband_phase : REAL := 0.0; -- wanted subband phase in degrees = WG phase at sop
+ CONSTANT c_subband_freq : REAL := REAL(g_subband) / REAL(c_sdp_N_fft); -- normalized by fs = f_adc = 200 MHz is dp_clk
+ CONSTANT c_wg_latency : INTEGER := c_diag_wg_latency - 0; -- -0 to account for BSN scheduler start trigger latency
+ CONSTANT c_wg_phase_offset : REAL := 360.0 * REAL(c_wg_latency) * c_subband_freq; -- c_diag_wg_latency is in dp_clk cycles
+ CONSTANT c_wg_phase : REAL := c_subband_phase + c_wg_phase_offset; -- WG phase in degrees
+ -- . freq
CONSTANT c_wg_subband_freq_unit : REAL := c_diag_wg_freq_unit/REAL(c_sdp_N_fft); -- subband freq = Fs/1024 = 200 MSps/1024 = 195312.5 Hz sinus
- CONSTANT c_wg_freq_offset : REAL := 0.0/11.0; -- in freq_unit
- CONSTANT c_subband_sp_0 : REAL := 102.0; -- Select subband at index 102 = 102/1024 * 200MHz = 19.921875 MHz
- CONSTANT c_wg_ampl_lsb : REAL := c_diag_wg_ampl_unit / c_full_scale_ampl; -- amplitude in number of LSbit resolution steps
- CONSTANT c_exp_wg_power_sp_0 : REAL := REAL(c_ampl_sp_0**2)/2.0 * REAL(c_nof_clk_per_sync);
-
- -- WPFB
- CONSTANT c_nof_pfb : NATURAL := 1; -- Verifying 1 of c_sdp_P_pfb = 6 pfb to speed up simulation.
- CONSTANT c_wb_leakage_bin : NATURAL := c_wpfb_sim.nof_points / c_wpfb_sim.wb_factor; -- = 256, leakage will occur in this bin if FIR wb_factor is reversed
- CONSTANT c_exp_sp_subband_power_ratio : REAL := 1.0/8.0; -- depends on internal WPFB quantization and FIR coefficients
- CONSTANT c_exp_sp_subband_power_sum_ratio : REAL := c_exp_sp_subband_power_ratio; -- because all sinus power is expected in one subband
- CONSTANT c_exp_subband_power_sp_0 : REAL := c_exp_wg_power_sp_0 * c_exp_sp_subband_power_ratio;
-
- TYPE t_real_arr IS ARRAY (INTEGER RANGE <>) OF REAL;
- TyPE t_slv_64_subbands_arr IS ARRAY (INTEGER RANGE <>) OF t_slv_64_arr(0 TO c_sdp_N_sub);
-
- -- MM
+
+ -- FSUB
+ -- . WPFB
+ CONSTANT c_pol_index : NATURAL := g_sp MOD c_sdp_Q_fft;
+ CONSTANT c_pfb_index : NATURAL := g_sp / c_sdp_Q_fft; -- only read used WPFB unit out of range(c_sdp_P_pfb = 6)
+ CONSTANT c_exp_subband_sp_ampl_ratio : REAL := 7.96; -- ~= 8 for unit FIR DC gain, depends on internal WPFB quantization and FIR coefficients
+ CONSTANT c_exp_subband_ampl_raw : REAL := REAL(c_wg_ampl) * c_exp_subband_sp_ampl_ratio;
+ CONSTANT c_exp_subband_ampl_weighted : REAL := c_exp_subband_ampl_raw * g_subband_weight_gain;
+ CONSTANT c_exp_subband_power_raw : REAL := c_exp_subband_ampl_raw**2.0; -- complex, so no divide by 2
+ CONSTANT c_exp_subband_power_weighted : REAL := c_exp_subband_ampl_weighted**2.0; -- complex, so no divide by 2
+ CONSTANT c_exp_subband_sst_raw : REAL := c_exp_subband_power_raw * REAL(c_nof_block_per_sync);
+ CONSTANT c_exp_subband_sst_weighted : REAL := c_exp_subband_power_weighted * REAL(c_nof_block_per_sync);
+
+ -- . expected limit values, obtained with print_str() for g_subband = 102,
+ -- g_wg_ampl = 1.0, g_subband_weight_gain = 1.0, g_subband_weight_phase = 30.0
+ CONSTANT c_exp_subband_sst_leakage_snr_dB : REAL := 70.0; -- < 74.913
+ CONSTANT c_exp_subband_sst_crosstalk_snr_dB : REAL := 90.0; -- < 96.284
+
+ TYPE t_real_arr IS ARRAY (INTEGER RANGE <>) OF REAL;
+ TyPE t_slv_64_subbands_arr IS ARRAY (INTEGER RANGE <>) OF t_slv_64_arr(0 TO c_sdp_N_sub-1);
+
+ -- . Subband weights for selected g_sp
+ CONSTANT c_subband_weight_re : INTEGER := INTEGER(g_subband_weight_gain * REAL(c_sdp_unit_sub_weight) * COS(g_subband_weight_phase * MATH_2_PI / 360.0));
+ CONSTANT c_subband_weight_im : INTEGER := INTEGER(g_subband_weight_gain * REAL(c_sdp_unit_sub_weight) * SIN(g_subband_weight_phase * MATH_2_PI / 360.0));
+
+ -- MM
+ -- . Address widths of a single MM instance
+ CONSTANT c_addr_w_reg_diag_wg : NATURAL := 2;
+ -- . Address spans of a single MM instance
+ CONSTANT c_mm_span_reg_diag_wg : NATURAL := 2**c_addr_w_reg_diag_wg;
+
CONSTANT c_mm_file_reg_bsn_source_v2 : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SOURCE_V2";
CONSTANT c_mm_file_reg_bsn_scheduler_wg : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SCHEDULER";
CONSTANT c_mm_file_reg_diag_wg : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_WG";
+ CONSTANT c_mm_file_ram_equalizer_gains : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_EQUALIZER_GAINS";
+ CONSTANT c_mm_file_reg_dp_selector : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_DP_SELECTOR";
CONSTANT c_mm_file_ram_st_sst : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_ST_SST";
-- Tb
SIGNAL tb_end : STD_LOGIC := '0';
SIGNAL sim_done : STD_LOGIC := '0';
- SIGNAL tb_clk : STD_LOGIC := '0';
+ SIGNAL tb_clk : STD_LOGIC := '0';
SIGNAL rd_data : STD_LOGIC_VECTOR(c_32-1 DOWNTO 0) := (OTHERS => '0');
+ SIGNAL pps_rst : STD_LOGIC := '1';
+ SIGNAL gen_pps : STD_LOGIC := '0';
+
-- WG
- SIGNAL current_bsn_wg : STD_LOGIC_VECTOR(c_dp_stream_bsn_w-1 DOWNTO 0);
-
- -- WPFB
- SIGNAL sp_subband_powers_arr2 : t_slv_64_subbands_arr(c_nof_pfb*c_nof_complex-1 DOWNTO 0); -- [sp][sub]
- SIGNAL sp_subband_power_0 : REAL;
- SIGNAL sp_subband_power_sum : t_real_arr(c_nof_pfb*c_nof_complex-1 DOWNTO 0) := (OTHERS=>0.0);
- SIGNAL sp_subband_power_sum_0 : REAL;
- SIGNAL sp_subband_power_ratio_0 : REAL;
- SIGNAL sp_subband_power_sum_ratio_0 : REAL;
- SIGNAL sp_subband_power_leakage_sum_0 : REAL;
-
+ SIGNAL current_bsn_wg : STD_LOGIC_VECTOR(c_dp_stream_bsn_w-1 DOWNTO 0);
+
+ -- FSUB
+ -- . WPFB
+ SIGNAL sp_subband_ssts_arr2 : t_slv_64_subbands_arr(c_sdp_N_pol-1 DOWNTO 0); -- [pol][sub]
+ SIGNAL sp_subband_sst_sum_arr : t_real_arr(c_sdp_N_pol-1 DOWNTO 0) := (OTHERS => 0.0);
+ SIGNAL sp_subband_sst : REAL := 0.0;
+ SIGNAL sp_subband_sst_leakage : REAL := 0.0;
+ SIGNAL sp_subband_sst_leakage_snr_dB : REAL := 0.0; -- signal to noise (leakage) ratio
+ SIGNAL sp_subband_sst_crosstalk : REAL := 0.0;
+ SIGNAL sp_subband_sst_crosstalk_snr_dB : REAL := 0.0; -- signal to noise (crosstalk) ration
+
+ SIGNAL exp_subband_ampl : REAL := 0.0;
+ SIGNAL exp_subband_power : REAL := 0.0;
+ SIGNAL exp_subband_sst : REAL := 0.0;
+ SIGNAL stat_data : STD_LOGIC_VECTOR(c_longword_w-1 DOWNTO 0);
+
+ -- . Selector
+ SIGNAL sst_offload_weighted_subbands : STD_LOGIC;
+
+ -- . Subband equalizer
+ SIGNAL sp_subband_weight_re : INTEGER := 0;
+ SIGNAL sp_subband_weight_im : INTEGER := 0;
+ SIGNAL sp_subband_weight_gain : REAL := 0.0;
+ SIGNAL sp_subband_weight_phase : REAL := 0.0;
+
-- DUT
SIGNAL ext_clk : STD_LOGIC := '0';
- SIGNAL pps : STD_LOGIC := '0';
- SIGNAL ext_pps : STD_LOGIC := '0';
- SIGNAL pps_rst : STD_LOGIC := '0';
+ SIGNAL ext_pps : STD_LOGIC := '0';
SIGNAL WDI : STD_LOGIC;
SIGNAL INTA : STD_LOGIC;
@@ -158,7 +227,6 @@ BEGIN
-- System setup
----------------------------------------------------------------------------
ext_clk <= NOT ext_clk AFTER c_ext_clk_period/2; -- External clock (200 MHz)
- eth_clk(0) <= NOT eth_clk(0) AFTER c_eth_clk_period/2; -- Ethernet ref clock (125 MHz)
JESD204B_REFCLK <= NOT JESD204B_REFCLK AFTER c_bck_ref_clk_period/2; -- JESD sample clock (200MHz)
INTA <= 'H'; -- pull up
@@ -167,9 +235,9 @@ BEGIN
------------------------------------------------------------------------------
-- External PPS
------------------------------------------------------------------------------
- proc_common_gen_pulse(5, c_pps_period, '1', pps_rst, ext_clk, pps);
- jesd204b_sysref <= pps;
- ext_pps <= pps;
+ proc_common_gen_pulse(5, c_pps_period, '1', pps_rst, ext_clk, gen_pps);
+ jesd204b_sysref <= gen_pps;
+ ext_pps <= gen_pps;
------------------------------------------------------------------------------
-- DUT
@@ -183,12 +251,12 @@ BEGIN
g_sim_node_nr => c_node_nr,
g_wpfb => c_wpfb_sim,
g_bsn_nof_clk_per_sync => c_nof_clk_per_sync,
- g_scope_selected_subband => NATURAL(c_subband_sp_0)
+ g_scope_selected_subband => g_subband
)
PORT MAP (
-- GENERAL
CLK => ext_clk,
- PPS => pps,
+ PPS => ext_pps,
WDI => WDI,
INTA => INTA,
INTB => INTB,
@@ -215,125 +283,231 @@ BEGIN
JESD204B_SYNC_N => jesd204b_sync_n
);
+ -- Raw or weighted subbands
+ exp_subband_ampl <= sel_a_b(sst_offload_weighted_subbands = '0', c_exp_subband_ampl_raw, c_exp_subband_ampl_weighted);
+ exp_subband_power <= sel_a_b(sst_offload_weighted_subbands = '0', c_exp_subband_power_raw, c_exp_subband_power_weighted);
+ exp_subband_sst <= sel_a_b(sst_offload_weighted_subbands = '0', c_exp_subband_sst_raw, c_exp_subband_sst_weighted);
+
------------------------------------------------------------------------------
-- MM slave accesses via file IO
------------------------------------------------------------------------------
- tb_clk <= NOT tb_clk AFTER c_tb_clk_period/2; -- Testbench MM clock
-
+ tb_clk <= NOT tb_clk AFTER c_tb_clk_period/2; -- Testbench MM clock
+
p_mm_stimuli : PROCESS
- VARIABLE v_bsn : NATURAL;
- VARIABLE v_sp_subband_power : REAL;
- VARIABLE v_W, v_T, v_U, v_S, v_B : NATURAL; -- array indicies
+ VARIABLE v_bsn : NATURAL;
+ VARIABLE v_data_lo, v_data_hi : STD_LOGIC_VECTOR(c_word_w-1 DOWNTO 0);
+ VARIABLE v_stat_data : STD_LOGIC_VECTOR(c_longword_w-1 DOWNTO 0);
+ VARIABLE v_len, v_span, v_offset, v_addr : NATURAL; -- address ranges, indices
+ VARIABLE v_W, v_P, v_U, v_S, v_B : NATURAL; -- array indicies
+ VARIABLE v_re, v_im, v_weight : INTEGER;
+ VARIABLE v_power : REAL;
BEGIN
-- Wait for DUT power up after reset
WAIT FOR 1 us;
- -- wait for pps
- proc_common_wait_until_hi_lo(ext_clk, ext_pps);
-
----------------------------------------------------------------------------
-- Enable BSN
----------------------------------------------------------------------------
- mmf_mm_bus_wr(c_mm_file_reg_bsn_source_v2, 3, 0, tb_clk);
- mmf_mm_bus_wr(c_mm_file_reg_bsn_source_v2, 2, 0, tb_clk); -- Init BSN = 0
- mmf_mm_bus_wr(c_mm_file_reg_bsn_source_v2, 1, c_nof_clk_per_sync, tb_clk); -- nof_block_per_sync
- mmf_mm_bus_wr(c_mm_file_reg_bsn_source_v2, 0, 16#00000003#, tb_clk); -- Enable BSN at PPS
-
+ mmf_mm_bus_wr(c_mm_file_reg_bsn_source_v2, 2, c_init_bsn, tb_clk); -- Init BSN
+ mmf_mm_bus_wr(c_mm_file_reg_bsn_source_v2, 3, 0, tb_clk); -- Write high part activates the init BSN
+ mmf_mm_bus_wr(c_mm_file_reg_bsn_source_v2, 1, c_nof_clk_per_sync, tb_clk); -- nof_block_per_sync
+ mmf_mm_bus_wr(c_mm_file_reg_bsn_source_v2, 0, 16#00000003#, tb_clk); -- Enable BSN at PPS
+
+ -- Release PPS pulser, to get first PPS now and to start BSN source
+ WAIT FOR 1 us;
+ pps_rst <= '0';
+
+ ----------------------------------------------------------------------------
+ -- Read weighted subband selector
+ ----------------------------------------------------------------------------
+ mmf_mm_bus_rd(c_mm_file_reg_dp_selector, 0, rd_data, tb_clk);
+ proc_common_wait_some_cycles(tb_clk, 1);
+ sst_offload_weighted_subbands <= NOT rd_data(0);
+
----------------------------------------------------------------------------
- -- Enable WG
+ -- Enable and start WG
----------------------------------------------------------------------------
-- 0 : mode[7:0] --> off=0, calc=1, repeat=2, single=3)
-- nof_samples[31:16] --> <= c_ram_wg_size=1024
-- 1 : phase[15:0]
-- 2 : freq[30:0]
-- 3 : ampl[16:0]
- mmf_mm_bus_wr(c_mm_file_reg_diag_wg, 0, 1024*2**16 + 1, tb_clk); -- nof_samples, mode calc
- mmf_mm_bus_wr(c_mm_file_reg_diag_wg, 1, INTEGER( 0.0 * c_diag_wg_phase_unit), tb_clk); -- phase offset in degrees
- mmf_mm_bus_wr(c_mm_file_reg_diag_wg, 2, INTEGER((c_subband_sp_0+c_wg_freq_offset) * c_wg_subband_freq_unit), tb_clk); -- freq
- mmf_mm_bus_wr(c_mm_file_reg_diag_wg, 3, INTEGER(REAL(c_ampl_sp_0) * c_wg_ampl_lsb), tb_clk); -- ampl
+ v_offset := g_sp * c_mm_span_reg_diag_wg;
+ mmf_mm_bus_wr(c_mm_file_reg_diag_wg, v_offset + 0, 1024*2**16 + 1, tb_clk); -- nof_samples, mode calc
+ mmf_mm_bus_wr(c_mm_file_reg_diag_wg, v_offset + 1, INTEGER(c_wg_phase * c_diag_wg_phase_unit), tb_clk); -- phase offset in degrees
+ mmf_mm_bus_wr(c_mm_file_reg_diag_wg, v_offset + 2, INTEGER(REAL(g_subband) * c_wg_subband_freq_unit), tb_clk); -- freq
+ mmf_mm_bus_wr(c_mm_file_reg_diag_wg, v_offset + 3, INTEGER(REAL(c_wg_ampl) * c_wg_ampl_lsb), tb_clk); -- ampl
-- Read current BSN
mmf_mm_bus_rd(c_mm_file_reg_bsn_scheduler_wg, 0, current_bsn_wg(31 DOWNTO 0), tb_clk);
mmf_mm_bus_rd(c_mm_file_reg_bsn_scheduler_wg, 1, current_bsn_wg(63 DOWNTO 32), tb_clk);
proc_common_wait_some_cycles(tb_clk, 1);
-
+
-- Write scheduler BSN to trigger start of WG at next block
v_bsn := TO_UINT(current_bsn_wg) + 2;
ASSERT v_bsn <= c_bsn_start_wg REPORT "Too late to start WG: " & int_to_str(v_bsn) & " > " & int_to_str(c_bsn_start_wg) SEVERITY ERROR;
mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_wg, 0, c_bsn_start_wg, tb_clk); -- first write low then high part
- mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_wg, 1, 0, tb_clk); -- assume v_bsn < 2**31-1
+ mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_wg, 1, 0, tb_clk); -- assume v_bsn < 2**31-1
+ ----------------------------------------------------------------------------
+ -- Write subband weight for selected g_sp and g_subband
+ ----------------------------------------------------------------------------
+ -- . MM format: (cint16)RAM_EQUALIZER_GAINS[S_pn/Q_fft]_[Q_fft][N_sub] = [S_pn][N_sub]
+ v_addr := g_sp * c_sdp_N_sub + g_subband;
+ -- . read
+ mmf_mm_bus_rd(c_mm_file_ram_equalizer_gains, v_addr, rd_data, tb_clk);
+ v_re := unpack_complex_re(rd_data, c_sdp_W_sub_weight);
+ v_im := unpack_complex_im(rd_data, c_sdp_W_sub_weight);
+ sp_subband_weight_re <= v_re;
+ sp_subband_weight_im <= v_im;
+ sp_subband_weight_gain <= SQRT(REAL(v_re)**2.0 + REAL(v_im)**2.0) / REAL(c_sdp_unit_sub_weight);
+ sp_subband_weight_phase <= atan2(Y => REAL(v_im), X => REAL(v_re)) * 360.0 / MATH_2_PI;
+ -- . write
+ v_weight := pack_complex(re => c_subband_weight_re, im => c_subband_weight_im, w => c_sdp_W_sub_weight); -- c_sdp_W_sub_weight = 16 bit
+ mmf_mm_bus_wr(c_mm_file_ram_equalizer_gains, v_addr, v_weight, tb_clk);
+ -- . read back
+ mmf_mm_bus_rd(c_mm_file_ram_equalizer_gains, v_addr, rd_data, tb_clk);
+ v_re := unpack_complex_re(rd_data, c_sdp_W_sub_weight);
+ v_im := unpack_complex_im(rd_data, c_sdp_W_sub_weight);
+ sp_subband_weight_re <= v_re;
+ sp_subband_weight_im <= v_im;
+ sp_subband_weight_gain <= SQRT(REAL(v_re)**2.0 + REAL(v_im)**2.0) / REAL(c_sdp_unit_sub_weight);
+ sp_subband_weight_phase <= atan2(Y => REAL(v_im), X => REAL(v_re)) * 360.0 / MATH_2_PI;
+
+ ----------------------------------------------------------------------------
-- Wait for enough WG data and start of sync interval
-
- mmf_mm_wait_until_value(c_mm_file_reg_bsn_scheduler_wg, 0, -- read BSN low
- "UNSIGNED", rd_data, ">=", c_nof_block_per_sync * 3, -- this is the wait until condition
+ ----------------------------------------------------------------------------
+ mmf_mm_wait_until_value(c_mm_file_reg_bsn_scheduler_wg, 0, -- read BSN low
+ "UNSIGNED", rd_data, ">=", c_init_bsn + c_nof_block_per_sync * 3, -- this is the wait until condition
c_sdp_T_sub, tb_clk);
---------------------------------------------------------------------------
-- Read subband statistics
---------------------------------------------------------------------------
- -- . the subband statistics are c_wpfb_sim.stat_data_sz = 2 word power values.
- -- . there are c_sdp_N_sub = 512 subbands per signal path
- -- . one complex WPFB can process two real inputs A, B
+ -- . the subband statistics are c_stat_data_sz = 2 word power values.
+ -- . there are c_sdp_S_pn = 12 signal inputs A, B, C, D, E, F, G, H, I, J, K, L
+ -- . there are c_sdp_N_sub = 512 subbands per signal input (SI, = signal path, SP)
+ -- . one complex WPFB can process two real inputs A, B, so there are c_sdp_P_pfb = 6 WPFB units,
+ -- but only read for the 1 WPFB unit of the selected g_sp, to save sim time
+ -- . the outputs for A, B are time multiplexed, c_sdp_Q_fft = 2, assume that they
+ -- correspond to the c_sdp_N_pol = 2 signal polarizations
-- . the subbands are output alternately so A0 B0 A1 B1 ... A511 B511 for input A, B
-- . the subband statistics multiple WPFB units appear in order in the ram_st_sst address map
-- . the subband statistics are stored first lo word 0 then hi word 1
-
- FOR I IN 0 TO c_nof_pfb*c_nof_complex*c_sdp_N_sub*c_wpfb_sim.stat_data_sz-1 LOOP
- v_W := I MOD c_wpfb_sim.stat_data_sz;
- v_T := (I / c_wpfb_sim.stat_data_sz) MOD c_nof_complex;
- v_U := I / (c_nof_complex*c_wpfb_sim.stat_data_sz*c_sdp_N_sub);
- v_S := v_T + v_U * c_nof_complex;
- v_B := (I / (c_nof_complex*c_wpfb_sim.stat_data_sz)) MOD c_sdp_N_sub;
- IF v_W=0 THEN
- -- low part
- mmf_mm_bus_rd(c_mm_file_ram_st_sst, I, rd_data, tb_clk);
- sp_subband_powers_arr2(v_S)(v_B)(31 DOWNTO 0) <= rd_data;
- ELSE
- -- high part
- mmf_mm_bus_rd(c_mm_file_ram_st_sst, I, rd_data, tb_clk);
- sp_subband_powers_arr2(v_S)(v_B)(63 DOWNTO 32) <= rd_data;
-
- -- Convert STD_LOGIC_VECTOR to REAL
- v_sp_subband_power := REAL(TO_UINT(rd_data(29 DOWNTO 0) &
- sp_subband_powers_arr2(v_S)(v_B)(31 DOWNTO 30)))*2.0**30 +
- REAL(TO_UINT(sp_subband_powers_arr2(v_S)(v_B)(29 DOWNTO 0)));
- -- sum
- sp_subband_power_sum(v_S) <= sp_subband_power_sum(v_S) + v_sp_subband_power;
+ v_len := c_sdp_N_sub * c_sdp_N_pol * c_stat_data_sz; -- 2048 = 512 * 2 * 64/32
+ v_span := true_log_pow2(v_len); -- = 2048
+ FOR I IN 0 TO v_len-1 LOOP
+ v_W := I MOD c_stat_data_sz; -- 0, 1 per statistics word, word index
+ v_P := (I / c_stat_data_sz) MOD c_sdp_N_pol; -- 0, 1 per SP pol, polarization index
+ v_B := I / (c_sdp_N_pol * c_stat_data_sz); -- subband index, range(N_sub = 512) per dual pol
+ v_addr := I + c_pfb_index * v_span; -- MM address for WPFB unit of selected g_sp
+ -- Only read SST for g_subband for dual pol SP, to save sim time
+ IF g_read_all_SST = TRUE OR v_B = g_subband THEN
+ IF v_W = 0 THEN
+ -- low part
+ mmf_mm_bus_rd(c_mm_file_ram_st_sst, v_addr, rd_data, tb_clk);
+ v_data_lo := rd_data;
+ ELSE
+ -- high part
+ mmf_mm_bus_rd(c_mm_file_ram_st_sst, v_addr, rd_data, tb_clk);
+ v_data_hi := rd_data;
+ v_stat_data := v_data_hi & v_data_lo;
+
+ sp_subband_ssts_arr2(v_P)(v_B) <= v_stat_data;
+ stat_data <= v_stat_data; -- for time series view in Wave window
+
+ -- sum of all subband powers per pol
+ sp_subband_sst_sum_arr(v_P) <= sp_subband_sst_sum_arr(v_P) + TO_UREAL(v_stat_data);
+ END IF;
END IF;
END LOOP;
+ proc_common_wait_some_cycles(tb_clk, 1);
- -- sp_subband_power_sum is the sum of all subband powers per SP, this value will be close to sp_subband_power
- -- because the input is a sinus, so most power will be in 1 subband. The sp_subband_power_leakage_sum shows
- -- how much power from the input sinus at a specific subband has leaked into the 511 other subbands.
- sp_subband_power_0 <= REAL(TO_UINT(sp_subband_powers_arr2(0)(INTEGER(ROUND(c_subband_sp_0)))(61 DOWNTO 30)))*2.0**30 +
- REAL(TO_UINT(sp_subband_powers_arr2(0)(INTEGER(ROUND(c_subband_sp_0)))(29 DOWNTO 0)));
-
- sp_subband_power_sum_0 <= sp_subband_power_sum(0);
-
+ -- Subband power of g_subband in g_sp
+ -- . For the selected g_subband in g_sp the sp_subband_sst will be close
+ -- to sp_subband_sst_sum_arr(c_pol_index), because the input is a
+ -- sinus, so most power will be in 1 subband.
+ sp_subband_sst <= TO_UREAL(sp_subband_ssts_arr2(c_pol_index)(g_subband));
proc_common_wait_some_cycles(tb_clk, 1);
+ -- The sp_subband_sst_leakage shows how much power from the input sinus at a specific
+ -- subband has leaked into the N_sub-1 = 511 other subbands. The power ratio yields an
+ -- indication of the SNR, although that also depends on the SNR of the WG sinus.
+ v_power := sp_subband_sst_sum_arr(c_pol_index) - sp_subband_sst;
+ sp_subband_sst_leakage <= v_power;
+ IF sp_subband_sst > c_eps AND v_power > c_eps THEN
+ sp_subband_sst_leakage_snr_dB <= 10.0 * LOG10(sp_subband_sst / v_power);
+ ELSIF g_read_all_SST THEN
+ REPORT "Wrong, zero leakage is unexpected for SP-" & NATURAL'IMAGE(g_sp) SEVERITY ERROR;
+ END IF;
+
+ -- The sp_subband_sst_crosstalk shows how much power from one WPFB input cross talks
+ -- into the other output, due to quantization cross talk in the complex FFT. The power
+ -- ration indicates the suppression, provided that the other input was zero.
+ v_power := sp_subband_sst_sum_arr(not_int(c_pol_index));
+ sp_subband_sst_crosstalk <= v_power;
+ IF sp_subband_sst > c_eps AND v_power > c_eps THEN
+ sp_subband_sst_crosstalk_snr_dB <= 10.0 * LOG10(sp_subband_sst / v_power);
+ ELSIF g_read_all_SST THEN
+ REPORT "Wrong, zero crosstalk is unexpected for SP-" & NATURAL'IMAGE(g_sp) SEVERITY ERROR;
+ END IF;
+
+ proc_common_wait_some_cycles(tb_clk, 10);
+
+ ---------------------------------------------------------------------------
+ -- Log WG, subband statistics
+ ---------------------------------------------------------------------------
+ print_str("");
+ print_str("WG:");
+ print_str(". c_wg_ampl = " & int_to_str(c_wg_ampl));
+ print_str(". c_exp_sp_power = " & real_to_str(c_exp_sp_power, 20, 1));
+ print_str(". c_exp_sp_ast = " & real_to_str(c_exp_sp_ast, 20, 1));
+
+ print_str("");
+ print_str("Subband selector:");
+ print_str(". sst_offload_weighted_subbands = " & sl_to_str(sst_offload_weighted_subbands));
+
+ print_str("");
+ print_str("Subband weight:");
+ print_str(". sp_subband_weight_gain = " & real_to_str(sp_subband_weight_gain, 20, 6));
+ print_str(". sp_subband_weight_phase = " & real_to_str(sp_subband_weight_phase, 20, 6));
+
+ print_str("");
+ print_str("SST results:");
+ print_str(". exp_subband_ampl = " & int_to_str(NATURAL(exp_subband_ampl)));
+ print_str(". exp_subband_power = " & real_to_str(exp_subband_power, 20, 1));
+ print_str(". exp_subband_sst = " & real_to_str(exp_subband_sst, 20, 1));
+ print_str("");
+ print_str(". sp_subband_sst = " & real_to_str(sp_subband_sst, 20, 1));
+ print_str(". sp_subband_sst / exp_subband_sst = " & real_to_str(sp_subband_sst / exp_subband_sst, 20, 6));
+
+ IF g_read_all_SST THEN
+ -- Log WPFB details, these are allready verified in tb of wpfb_unit_dev.vhd, so here
+ -- quality indicators like leakage and crosstalk are also reported out of interest.
+ print_str("");
+ print_str("SST quality indicators");
+ print_str(". sp_subband_sst_leakage = " & real_to_str(sp_subband_sst_leakage, 20, 0));
+ print_str(". sp_subband_sst_leakage_snr_dB = " & real_to_str(sp_subband_sst_leakage_snr_dB, 20, 3));
+ print_str(". sp_subband_sst_crosstalk = " & real_to_str(sp_subband_sst_crosstalk, 20, 0));
+ print_str(". sp_subband_sst_crosstalk_snr_db = " & real_to_str(sp_subband_sst_crosstalk_snr_db, 20, 3));
+ END IF;
+
+ ---------------------------------------------------------------------------
+ -- Verify SST
---------------------------------------------------------------------------
- -- Verify subband statistics
- ---------------------------------------------------------------------------
-- verify expected subband power based on WG power
- IF sp_subband_power_sum_0>0.0 THEN ASSERT sp_subband_power_0 > c_lo_factor * c_exp_subband_power_sp_0 REPORT "Wrong subband power for SP 0" SEVERITY ERROR; END IF;
- IF sp_subband_power_sum_0>0.0 THEN ASSERT sp_subband_power_0 < c_hi_factor * c_exp_subband_power_sp_0 REPORT "Wrong subband power for SP 0" SEVERITY ERROR; END IF;
-
- -- view c_exp_sp_subband_power_ratio in Wave window
- IF sp_subband_power_sum_0>0.0 THEN sp_subband_power_ratio_0 <= sp_subband_power_0/sp_subband_power_sum_0; END IF;
-
- -- view c_exp_sp_subband_power_sum_ratio in Wave window
- -- The sp_subband_power_sum_ratio show similar information as sp_subband_power_leakage_sum, because when
- -- sp_subband_power_leakage_sum is small then sp_subband_power_sum_ratio ~= sp_subband_power_ratio.
- IF sp_subband_power_sum_0>0.0 THEN sp_subband_power_sum_ratio_0 <= sp_subband_power_sum_0/sp_subband_power_0; END IF;
-
- -- View sp_subband_power_leakage_sum in Wave window
- IF sp_subband_power_sum_0>0.0 THEN sp_subband_power_leakage_sum_0 <= sp_subband_power_sum_0 - sp_subband_power_0; END IF;
+ ASSERT sp_subband_sst > c_lo_factor * exp_subband_sst REPORT "Wrong subband power for SP " & NATURAL'IMAGE(g_sp) SEVERITY ERROR;
+ ASSERT sp_subband_sst < c_hi_factor * exp_subband_sst REPORT "Wrong subband power for SP " & NATURAL'IMAGE(g_sp) SEVERITY ERROR;
+ IF g_read_all_SST THEN
+ -- Verify expected SNR quality measures
+ ASSERT sp_subband_sst_leakage_snr_dB > c_exp_subband_sst_leakage_snr_dB REPORT "Wrong to much leakage for SP " & NATURAL'IMAGE(g_sp) SEVERITY ERROR;
+ ASSERT sp_subband_sst_crosstalk_snr_dB > c_exp_subband_sst_crosstalk_snr_dB REPORT "Wrong to much crosstalk for SP " & NATURAL'IMAGE(g_sp) SEVERITY ERROR;
+ END IF;
+
+ ---------------------------------------------------------------------------
+ -- End Simulation
---------------------------------------------------------------------------
- -- End Simulation
- ---------------------------------------------------------------------------
sim_done <= '1';
proc_common_wait_some_cycles(ext_clk, 100);
proc_common_stop_simulation(TRUE, ext_clk, sim_done, tb_end);