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-- Author: Harm Jan Pepping : HJP at astron.nl: April 2012
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--
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-- Copyright (C) 2012
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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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-- This program is free software: you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation, either version 3 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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--
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--------------------------------------------------------------------------------
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-- Purpose: Wideband polyphase filterbank with subband statistics and streaming interfaces.
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--
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-- Description:
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--
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-- This WPFB unit connects an incoming array of streaming interfaces to the
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-- wideband pft + fft.
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-- The output of the wideband fft is connected to a set of subband statistics
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-- units. The statistics can be read via the memory mapped interface.
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-- A control unit takes care of the correct composition of the control of the
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-- output streams regarding sop, eop, sync, bsn, err.
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--
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-- The wpfb unit can handle a wideband factor >= 1 (g_wpfb.wb_factor) or
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-- a narrowband factor >= 1 (2**g_wpfb.nof_chan).
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-- . For wb_factor = 1 the wpfb_unit uses fft_r2_pipe
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-- . For wb_factor > 1 the wpfb_unit uses fft_r2_wide
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-- . For wb_factor >= 1 the wpfb_unit supports nof_chan >= 0, even though the
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-- concept of channels is typically not useful when wb_factor > 1.
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-- . The wpfb_unit does support use_reorder.
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-- . The wpfb_unit does support use_separate.
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-- . The wpfb_unit does support input flow control with invalid gaps in the
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-- input.
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--
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-- . g_coefs_file_prefix:
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-- The g_coefs_file_prefix points to the location where the files
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-- with the initial content for the coefficients memories are located and
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-- is described in fil_ppf_wide.vhd.
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--
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-- . fft_out_gain_w
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-- For two real input typically fft_out_gain_w = 1 is used to compensate for
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-- the divide by 2 in the separate function that is done because real input
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-- frequency bins have norm 0.5. For complex input typically fft_out_gain_w
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-- = 0, because the complex bins have norm 1.
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--
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-- . g_dont_flip_channels:
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-- True preserves channel interleaving, set by g_wpfb.nof_chan>0, of the FFT
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-- output when g_bit_flip=true to reorder the FFT output.
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-- The g_dont_flip_channels applies for both complex input and two_real
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-- input FFT. The g_dont_flip_channels is only implemented for the pipelined
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-- fft_r2_pipe, because for g_wpfb.wb_factor=1 using g_wpfb.nof_chan>0 makes
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-- sense, while for the fft_r2_wide with g_wpfb.wb_factor>1 using input
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-- multiplexing via g_wpfb.nof_chan>0 makes less sense.
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--
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-- The reordering to the fil_ppf_wide is done such that the FIR filter
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-- coefficients are reused. The same filter coefficients are used for all
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-- streams. The filter has real coefficients, because the filterbank
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-- channels are symmetrical in frequency. The real part and the imaginary
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-- part are filtered independently and also use the same real FIR
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-- coefficients.
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--
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-- Note that:
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-- . The same P of all streams are grouped the in filter and all P per
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-- stream are grouped in the FFT. Hence the WPFB input is grouped per
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-- P for all wideband streams to allow FIR coefficients reuse per P
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-- for all wideband streams. The WPFB output is grouped per wideband
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-- stream to have all P together.
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--
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-- . The wideband time index t is big-endian inside the prefilter and
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-- little-endian inside the FFT.
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-- When g_big_endian_wb_in=true then the WPFB input must be in big-endian
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-- format, else in little-endian format.
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-- For little-endian time index t increments in the same direction as the
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-- wideband factor index P, so P = 0, 1, 2, 3 --> t0, t1, t2, t3.
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-- For big-endian the time index t increments in the opposite direction of
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-- the wideband factor index P, so P = 3, 2, 1, 0 --> t0, t1, t2, t3.
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-- The WPFB output is fixed little-endian, so with frequency bins in
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-- incrementing order. However the precise frequency bin order depends
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-- on the reorder generics.
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--
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-- When wb_factor = 4 and nof_wb_streams = 2 the mapping is as follows using
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-- the array notation:
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--
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-- . I = array index
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-- . S = stream index of a wideband stream
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-- . P = wideband factor index
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-- . t = time index
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--
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-- parallel serial type
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-- in_sosi_arr [nof_streams][wb_factor] [t] cint
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--
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-- fil_in_arr [wb_factor][nof_streams][complex] [t] int
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-- fil_out_arr [wb_factor][nof_streams][complex] [t] int
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--
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-- fil_sosi_arr [nof_streams][wb_factor] [t] cint
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-- fft_in_re_arr [nof_streams][wb_factor] [t] int
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-- fft_in_im_arr [nof_streams][wb_factor] [t] int
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-- fft_out_re_arr [nof_streams][wb_factor] [bin] int
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-- fft_out_im_arr [nof_streams][wb_factor] [bin] int
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-- fft_out_sosi_arr [nof_streams][wb_factor] [bin] cint
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-- pfb_out_sosi_arr [nof_streams][wb_factor] [bin] cint with sync, BSN, sop, eop
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-- out_sosi_arr [nof_streams][wb_factor] [bin] cint with sync, BSN, sop, eop
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--
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-- in_sosi_arr | fil_in_arr | fft_in_re_arr | fft_out_re_arr
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-- fil_sosi_arr | fil_out_arr | fft_in_im_arr | fft_out_im_arr
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-- | | | fft_out_sosi_arr
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-- | | | pfb_out_sosi_arr
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-- | | | out_sosi_arr
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-- | | |
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-- I S P t | I P S | I S P t | I S P
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-- 7 1 3 0 | 15 3 1 IM | 7 1 3 3 | 7 1 3
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-- 6 1 2 1 | 14 3 1 RE | 6 1 2 2 | 6 1 2
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-- 5 1 1 2 | 13 3 0 IM | 5 1 1 1 | 5 1 1
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-- 4 1 0 3 | 12 3 0 RE | 4 1 0 0 | 4 1 0
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-- 3 0 3 0 | 11 2 1 IM | 3 0 3 3 | 3 0 3
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-- 2 0 2 1 | 10 2 1 RE | 2 0 2 2 | 2 0 2
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-- 1 0 1 2 | 9 2 0 IM | 1 0 1 1 | 1 0 1
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-- 0 0 0 3 | 8 2 0 RE | 0 0 0 0 | 0 0 0
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-- | 7 1 1 IM | |
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-- ^ | 6 1 1 RE | ^ |
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-- big | 5 1 0 IM | little |
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-- endian | 4 1 0 RE | endian |
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-- | 3 0 1 IM | |
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-- | 2 0 1 RE | |
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-- | 1 0 0 IM | |
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-- | 0 0 0 RE | |
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--
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-- The WPFB output are the frequency bins per transformed block:
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-- . subbands, in case ot two real input or
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-- . channels, in case of complex input
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--
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-- The order of the WPFB output depends on the g_fft fields:
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-- . wb_factor
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-- . use_reorder
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-- . use_fft_shift
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-- . use_separate
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--
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-- The frequency bin order at the output is obtained with reg_out_bin
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-- in the test bench tb_wpfb_unit_dev.vhd.
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--
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-- Output examples:
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--
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-- Frequency bins:
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-- fs = sample frequency
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-- Bb = fs/nof_points = bin bandwidth
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--
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-- 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
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-- ^ ^ ^ ^ ^
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-- <--------- negative bin frequencies ---------> 0 <---------- positive bin frequencies ------->
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-- -fs/2 -Bb 0 +Bb +fs/2-Bb
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--
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-- I) Wideband wb_factor = 4
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-- 1) Two real inputs:
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--
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-- out_sosi_arr:
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-- I S P bin frequency order . nof_streams = 2
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-- 7 1 3 12 12 13 13 14 14 15 15 . wb_factor = 4
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-- 6 1 2 8 8 9 9 10 10 11 11 . nof_points = 32
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-- 5 1 1 4 4 5 5 6 6 7 7 . use_reorder = true
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-- 4 1 0 0 0 1 1 2 2 3 3 . use_fft_shift = false
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-- 3 0 3 12 12 13 13 14 14 15 15 . use_separate = true
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-- 2 0 2 8 8 9 9 10 10 11 11 - input A via in_sosi_arr().re
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-- 1 0 1 4 4 5 5 6 6 7 7 - input B via in_sosi_arr().im
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-- 0 0 0 0 0 1 1 2 2 3 3
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-- input A B A B A B A B
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--
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-- when nof_chan=1 then:
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-- I S P bin frequency order
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-- 7 1 3 12 12 13 13 14 14 15 15 12 12 13 13 14 14 15 15
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-- 6 1 2 8 8 9 9 10 10 11 11 8 8 9 9 10 10 11 11
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-- 5 1 1 4 4 5 5 6 6 7 7 4 4 5 5 6 6 7 7
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-- 4 1 0 0 0 1 1 2 2 3 3 0 0 1 1 2 2 3 3
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-- 3 0 3 12 12 13 13 14 14 15 15 12 12 13 13 14 14 15 15
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-- 2 0 2 8 8 9 9 10 10 11 11 8 8 9 9 10 10 11 11
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-- 1 0 1 4 4 5 5 6 6 7 7 4 4 5 5 6 6 7 7
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-- 0 0 0 0 0 1 1 2 2 3 3 0 0 1 1 2 2 3 3
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-- input A B A B A B A B A B A B A B A B
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-- channel 0....................0 1....................1
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--
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-- 2a) Complex input with fft_shift:
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--
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-- out_sosi_arr:
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-- I S P bin frequency order . nof_streams = 2
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-- 7 1 3 24 25 26 27 28 29 30 31 . wb_factor = 4
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-- 6 1 2 16 17 18 19 20 21 22 23 . nof_points = 32
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-- 5 1 1 8 9 10 11 12 13 14 15 . use_reorder = true
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-- 4 1 0 0 1 2 3 4 5 6 7 . use_fft_shift = true
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-- 3 0 3 24 25 26 27 28 29 30 31 . use_separate = false
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-- 2 0 2 16 17 18 19 20 21 22 23 - complex input via in_sosi_arr().re and im
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-- 1 0 1 8 9 10 11 12 13 14 15
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-- 0 0 0 0 1 2 3 4 5 6 7
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--
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-- when nof_chan=1 then:
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-- I S P bin frequency order
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-- 7 1 3 24 25 26 27 28 29 30 31 24 25 26 27 28 29 30 31
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-- 6 1 2 16 17 18 19 20 21 22 23 16 17 18 19 20 21 22 23
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-- 5 1 1 8 9 10 11 12 13 14 15 8 9 10 11 12 13 14 15
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-- 4 1 0 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
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-- 3 0 3 24 25 26 27 28 29 30 31 24 25 26 27 28 29 30 31
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-- 2 0 2 16 17 18 19 20 21 22 23 16 17 18 19 20 21 22 23
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-- 1 0 1 8 9 10 11 12 13 14 15 8 9 10 11 12 13 14 15
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-- 0 0 0 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
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-- channel 0....................0 1....................1
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--
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-- 2b) Complex input with reorder, but no fft_shift:
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--
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-- out_sosi_arr:
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-- I S P bin frequency order . nof_streams = 2
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-- 7 1 3 8 9 10 11 12 13 14 15 . wb_factor = 4
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-- 6 1 2 0 1 2 3 4 5 6 7 . nof_points = 32
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-- 5 1 1 24 25 26 27 28 29 30 31 . use_reorder = true
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-- 4 1 0 16 17 18 19 20 21 22 23 . use_fft_shift = false
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-- 3 0 3 8 9 10 11 12 13 14 15 . use_separate = false
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-- 2 0 2 0 1 2 3 4 5 6 7 - complex input via in_sosi_arr().re and im
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-- 1 0 1 24 25 26 27 28 29 30 31
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-- 0 0 0 16 17 18 19 20 21 22 23
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--
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-- when nof_chan=1 then:
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-- I S P bin frequency order
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-- 7 1 3 8 9 10 11 12 13 14 15 8 9 10 11 12 13 14 15
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-- 6 1 2 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
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-- 5 1 1 24 25 26 27 28 29 30 31 24 25 26 27 28 29 30 31
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-- 4 1 0 16 17 18 19 20 21 22 23 16 17 18 19 20 21 22 23
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-- 3 0 3 8 9 10 11 12 13 14 15 8 9 10 11 12 13 14 15
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-- 2 0 2 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
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-- 1 0 1 24 25 26 27 28 29 30 31 24 25 26 27 28 29 30 31
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-- 0 0 0 16 17 18 19 20 21 22 23 16 17 18 19 20 21 22 23
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-- channel 0....................0 1....................1
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--
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-- 2c) Complex input without reorder (so bit flipped):
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--
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-- out_sosi_arr:
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-- I S P bin frequency order . nof_streams = 2
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-- 7 1 3 8 12 10 14 9 13 11 15 . wb_factor = 4
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-- 6 1 2 24 28 26 30 25 29 27 31 . nof_points = 32
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-- 5 1 1 0 4 2 6 1 5 3 7 . use_reorder = false
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-- 4 1 0 16 20 18 22 17 21 19 23 . use_fft_shift = false
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-- 3 0 3 8 12 10 14 9 13 11 15 . use_separate = false
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-- 2 0 2 24 28 26 30 25 29 27 31 - complex input via in_sosi_arr().re and im
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-- 1 0 1 0 4 2 6 1 5 3 7
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-- 0 0 0 16 20 18 22 17 21 19 23
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--
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-- when nof_chan=1 then:
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-- I S P bin frequency order
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-- 7 1 3 8 8 12 12 10 10 14 14 9 9 13 13 11 11 15 15
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-- 6 1 2 24 24 28 28 26 26 30 30 25 25 29 29 27 27 31 31
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-- 5 1 1 0 0 4 4 2 2 6 6 1 1 5 5 3 3 7 7
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-- 4 1 0 16 16 20 20 18 18 22 22 17 17 21 21 19 19 23 23
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-- 3 0 3 8 8 12 12 10 10 14 14 9 9 13 13 11 11 15 15
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-- 2 0 2 24 24 28 28 26 26 30 30 25 25 29 29 27 27 31 31
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-- 1 0 1 0 0 4 4 2 2 6 6 1 1 5 5 3 3 7 7
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-- 0 0 0 16 16 20 20 18 18 22 22 17 17 21 21 19 19 23 23
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-- channel 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
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--
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-- II) Narrowband wb_factor = 1
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--
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-- 1) Two real inputs:
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--
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-- . nof_streams = 2
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-- . nof_chan = 0
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-- . wb_factor = 1
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-- . nof_points = 32
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-- . use_reorder = true
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-- . use_fft_shift = false
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-- . use_separate = true
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-- - input A via in_sosi_arr().re
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-- - input B via in_sosi_arr().im
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--
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-- out_sosi_arr:
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-- I S P bin frequency order
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-- 1 1 0 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15
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-- 0 0 0 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15
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-- input A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B
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--
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-- when nof_chan=1 then:
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-- I S P bin frequency order
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|
|
-- 1 1 0 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15
|
288 |
|
|
-- 0 0 0 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15
|
289 |
|
|
-- input A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B
|
290 |
|
|
-- channel: 0............................................................................................0 1............................................................................................1
|
291 |
|
|
--
|
292 |
|
|
-- 2) Complex input
|
293 |
|
|
-- . nof_streams = 2
|
294 |
|
|
-- . nof_chan = 0
|
295 |
|
|
-- . wb_factor = 1
|
296 |
|
|
-- . nof_points = 32
|
297 |
|
|
-- . use_separate = false
|
298 |
|
|
-- - complex input via in_sosi_arr().re and im
|
299 |
|
|
|
300 |
|
|
-- 2a) Complex input with fft_shift (so use_reorder = true, use_fft_shift = true)
|
301 |
|
|
--
|
302 |
|
|
-- out_sosi_arr:
|
303 |
|
|
-- I S P bin frequency order
|
304 |
|
|
-- 1 1 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
|
305 |
|
|
-- 0 0 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
|
306 |
|
|
--
|
307 |
|
|
-- when nof_chan=1 then:
|
308 |
|
|
-- I S P bin frequency order
|
309 |
|
|
-- 1 1 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
|
310 |
|
|
-- 0 0 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
|
311 |
|
|
-- channel: 0............................................................................................0 1............................................................................................1
|
312 |
|
|
--
|
313 |
|
|
-- 2b) Complex input with reorder but no fft_shift (so use_reorder = true, use_fft_shift = false)
|
314 |
|
|
--
|
315 |
|
|
-- out_sosi_arr:
|
316 |
|
|
-- I S P bin frequency order
|
317 |
|
|
-- 1 1 0 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
|
318 |
|
|
-- 0 0 0 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
|
319 |
|
|
--
|
320 |
|
|
-- when nof_chan=1 then:
|
321 |
|
|
-- I S P bin frequency order
|
322 |
|
|
-- 1 1 0 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
|
323 |
|
|
-- 0 0 0 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
|
324 |
|
|
-- channel: 0............................................................................................0 1............................................................................................1
|
325 |
|
|
--
|
326 |
|
|
-- 2c) Complex input without reorder (so use_reorder = false, use_fft_shift = false)
|
327 |
|
|
--
|
328 |
|
|
-- out_sosi_arr:
|
329 |
|
|
-- I S P bin frequency order
|
330 |
|
|
-- 1 1 0 16 0 24 8 20 4 28 12 18 2 26 10 22 6 30 14 17 1 25 9 21 5 29 13 19 3 27 11 23 7 31 15
|
331 |
|
|
-- 0 0 0 16 0 24 8 20 4 28 12 18 2 26 10 22 6 30 14 17 1 25 9 21 5 29 13 19 3 27 11 23 7 31 15
|
332 |
|
|
--
|
333 |
|
|
-- when nof_chan=1 then:
|
334 |
|
|
-- I S P bin frequency order
|
335 |
|
|
-- 1 1 0 16 16 0 0 24 24 8 8 20 20 4 4 28 28 12 12 18 18 2 2 26 26 10 10 22 22 6 6 30 30 14 14 17 17 1 1 25 25 9 9 21 21 5 5 29 29 13 13 19 19 3 3 27 27 11 11 23 23 7 7 31 31 15 15
|
336 |
|
|
-- 0 0 0 16 16 0 0 24 24 8 8 20 20 4 4 28 28 12 12 18 18 2 2 26 26 10 10 22 22 6 6 30 30 14 14 17 17 1 1 25 25 9 9 21 21 5 5 29 29 13 13 19 19 3 3 27 27 11 11 23 23 7 7 31 31 15 15
|
337 |
|
|
-- channel: 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
|
338 |
|
|
--
|
339 |
|
|
-- Remarks:
|
340 |
|
|
-- . The unit can handle only one sync at a time. Therfor the
|
341 |
|
|
-- sync interval should be larger than the total pipeline
|
342 |
|
|
-- stages of the wideband fft.
|
343 |
|
|
--
|
344 |
|
|
|
345 |
|
|
library ieee, common_pkg_lib, dp_pkg_lib, astron_r2sdf_fft_lib, astron_statistics_lib, astron_filter_lib, astron_wb_fft_lib, astron_diagnostics_lib, astron_ram_lib, astron_mm_lib;
|
346 |
|
|
use IEEE.std_logic_1164.all;
|
347 |
|
|
use STD.textio.all;
|
348 |
|
|
use common_pkg_lib.common_pkg.all;
|
349 |
|
|
use astron_ram_lib.common_ram_pkg.all;
|
350 |
|
|
use dp_pkg_lib.dp_stream_pkg.ALL;
|
351 |
|
|
use astron_r2sdf_fft_lib.rTwoSDFPkg.all;
|
352 |
|
|
use astron_statistics_lib.all;
|
353 |
|
|
use astron_filter_lib.all;
|
354 |
|
|
use astron_filter_lib.fil_pkg.all;
|
355 |
|
|
use astron_wb_fft_lib.all;
|
356 |
|
|
use astron_wb_fft_lib.fft_pkg.all;
|
357 |
|
|
use work.wpfb_pkg.all;
|
358 |
|
|
|
359 |
|
|
entity wpfb_unit_dev is
|
360 |
|
|
generic (
|
361 |
|
|
g_big_endian_wb_in : boolean := true;
|
362 |
|
|
g_wpfb : t_wpfb;
|
363 |
|
|
g_dont_flip_channels: boolean := false; -- True preserves channel interleaving for pipelined FFT
|
364 |
|
|
g_use_prefilter : boolean := TRUE;
|
365 |
|
|
g_stats_ena : boolean := TRUE; -- Enables the statistics unit
|
366 |
|
|
g_use_bg : boolean := FALSE;
|
367 |
|
|
g_coefs_file_prefix : string := "data/coefs_wide" -- File prefix for the coefficients files.
|
368 |
|
|
);
|
369 |
|
|
port (
|
370 |
|
|
dp_rst : in std_logic := '0';
|
371 |
|
|
dp_clk : in std_logic;
|
372 |
|
|
mm_rst : in std_logic;
|
373 |
|
|
mm_clk : in std_logic;
|
374 |
|
|
ram_fil_coefs_mosi : in t_mem_mosi;
|
375 |
|
|
ram_fil_coefs_miso : out t_mem_miso := c_mem_miso_rst;
|
376 |
|
|
ram_st_sst_mosi : in t_mem_mosi; -- Subband statistics registers
|
377 |
|
|
ram_st_sst_miso : out t_mem_miso := c_mem_miso_rst;
|
378 |
|
|
reg_bg_ctrl_mosi : in t_mem_mosi;
|
379 |
|
|
reg_bg_ctrl_miso : out t_mem_miso;
|
380 |
|
|
ram_bg_data_mosi : in t_mem_mosi;
|
381 |
|
|
ram_bg_data_miso : out t_mem_miso;
|
382 |
|
|
in_sosi_arr : in t_dp_sosi_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
383 |
|
|
fil_sosi_arr : out t_dp_sosi_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
384 |
|
|
out_sosi_arr : out t_dp_sosi_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0)
|
385 |
|
|
);
|
386 |
|
|
end entity wpfb_unit_dev;
|
387 |
|
|
|
388 |
|
|
architecture str of wpfb_unit_dev is
|
389 |
|
|
|
390 |
|
|
constant c_nof_channels : natural := 2**g_wpfb.nof_chan;
|
391 |
|
|
|
392 |
|
|
constant c_nof_data_per_block : natural := c_nof_channels * g_wpfb.nof_points;
|
393 |
|
|
constant c_nof_valid_per_block : natural := c_nof_data_per_block / g_wpfb.wb_factor;
|
394 |
|
|
|
395 |
|
|
constant c_nof_stats : natural := c_nof_valid_per_block;
|
396 |
|
|
|
397 |
|
|
constant c_fil_ppf : t_fil_ppf := (g_wpfb.wb_factor,
|
398 |
|
|
g_wpfb.nof_chan,
|
399 |
|
|
g_wpfb.nof_points,
|
400 |
|
|
g_wpfb.nof_taps,
|
401 |
|
|
c_nof_complex*g_wpfb.nof_wb_streams, -- Complex FFT always requires 2 filter streams: real and imaginary
|
402 |
|
|
g_wpfb.fil_backoff_w,
|
403 |
|
|
g_wpfb.fil_in_dat_w,
|
404 |
|
|
g_wpfb.fil_out_dat_w,
|
405 |
|
|
g_wpfb.coef_dat_w);
|
406 |
|
|
|
407 |
|
|
constant c_fft : t_fft := (g_wpfb.use_reorder,
|
408 |
|
|
g_wpfb.use_fft_shift,
|
409 |
|
|
g_wpfb.use_separate,
|
410 |
|
|
g_wpfb.nof_chan,
|
411 |
|
|
g_wpfb.wb_factor,
|
412 |
|
|
0,
|
413 |
|
|
g_wpfb.nof_points,
|
414 |
|
|
g_wpfb.fft_in_dat_w,
|
415 |
|
|
g_wpfb.fft_out_dat_w,
|
416 |
|
|
g_wpfb.fft_out_gain_w,
|
417 |
|
|
g_wpfb.stage_dat_w,
|
418 |
|
|
g_wpfb.guard_w,
|
419 |
|
|
g_wpfb.guard_enable,
|
420 |
|
|
g_wpfb.stat_data_w,
|
421 |
|
|
g_wpfb.stat_data_sz);
|
422 |
|
|
|
423 |
|
|
constant c_fft_r2_check : boolean := fft_r2_parameter_asserts(c_fft);
|
424 |
|
|
|
425 |
|
|
constant c_bg_buf_adr_w : natural := ceil_log2(g_wpfb.nof_points/g_wpfb.wb_factor);
|
426 |
|
|
constant c_bg_data_file_index_arr : t_nat_natural_arr := array_init(0, g_wpfb.nof_wb_streams*g_wpfb.wb_factor, 1);
|
427 |
|
|
constant c_bg_data_file_prefix : string := "UNUSED";
|
428 |
|
|
|
429 |
|
|
signal ram_st_sst_mosi_arr : t_mem_mosi_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
430 |
|
|
signal ram_st_sst_miso_arr : t_mem_miso_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0) := (others => c_mem_miso_rst);
|
431 |
|
|
|
432 |
|
|
signal fil_in_arr : t_fil_slv_arr(c_nof_complex*g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
433 |
|
|
signal fil_in_val : std_logic;
|
434 |
|
|
signal fil_out_arr : t_fil_slv_arr(c_nof_complex*g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
435 |
|
|
signal fil_out_val : std_logic;
|
436 |
|
|
|
437 |
|
|
signal fft_in_re_arr : t_fft_slv_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
438 |
|
|
signal fft_in_im_arr : t_fft_slv_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
439 |
|
|
signal fft_in_val : std_logic;
|
440 |
|
|
|
441 |
|
|
signal fft_out_re_arr_i : t_fft_slv_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
442 |
|
|
signal fft_out_im_arr_i : t_fft_slv_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
443 |
|
|
signal fft_out_re_arr : t_fft_slv_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
444 |
|
|
signal fft_out_im_arr : t_fft_slv_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
445 |
|
|
signal fft_out_re_arr_pipe : t_fft_slv_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
446 |
|
|
signal fft_out_im_arr_pipe : t_fft_slv_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
447 |
|
|
signal fft_out_val_arr : std_logic_vector(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
448 |
|
|
|
449 |
|
|
signal fft_out_sosi : t_dp_sosi;
|
450 |
|
|
signal fft_out_sosi_arr : t_dp_sosi_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0) := (others => c_dp_sosi_rst);
|
451 |
|
|
|
452 |
|
|
signal pfb_out_sosi_arr : t_dp_sosi_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0) := (others => c_dp_sosi_rst);
|
453 |
|
|
|
454 |
|
|
type reg_type is record
|
455 |
|
|
in_sosi_arr : t_dp_sosi_arr(g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 downto 0);
|
456 |
|
|
end record;
|
457 |
|
|
|
458 |
|
|
signal r, rin : reg_type;
|
459 |
|
|
|
460 |
|
|
begin
|
461 |
|
|
|
462 |
|
|
-- The complete input sosi arry is registered.
|
463 |
|
|
comb : process(r, in_sosi_arr)
|
464 |
|
|
variable v : reg_type;
|
465 |
|
|
begin
|
466 |
|
|
v := r;
|
467 |
|
|
v.in_sosi_arr := in_sosi_arr;
|
468 |
|
|
rin <= v;
|
469 |
|
|
end process comb;
|
470 |
|
|
|
471 |
|
|
regs : process(dp_clk)
|
472 |
|
|
begin
|
473 |
|
|
if rising_edge(dp_clk) then
|
474 |
|
|
r <= rin;
|
475 |
|
|
end if;
|
476 |
|
|
end process;
|
477 |
|
|
|
478 |
|
|
---------------------------------------------------------------
|
479 |
|
|
-- COMBINE MEMORY MAPPED INTERFACES
|
480 |
|
|
---------------------------------------------------------------
|
481 |
|
|
-- Combine the internal array of mm interfaces for the subband
|
482 |
|
|
-- statistics to one array that is connected to the port of the
|
483 |
|
|
-- fft_wide_unit.
|
484 |
|
|
u_mem_mux_sst : entity astron_mm_lib.common_mem_mux
|
485 |
|
|
generic map (
|
486 |
|
|
g_nof_mosi => g_wpfb.nof_wb_streams*g_wpfb.wb_factor,
|
487 |
|
|
g_mult_addr_w => ceil_log2(g_wpfb.stat_data_sz*c_nof_stats)
|
488 |
|
|
)
|
489 |
|
|
port map (
|
490 |
|
|
mosi => ram_st_sst_mosi,
|
491 |
|
|
miso => ram_st_sst_miso,
|
492 |
|
|
mosi_arr => ram_st_sst_mosi_arr,
|
493 |
|
|
miso_arr => ram_st_sst_miso_arr
|
494 |
|
|
);
|
495 |
|
|
|
496 |
|
|
gen_pfb : if g_use_bg = FALSE generate
|
497 |
|
|
---------------------------------------------------------------
|
498 |
|
|
-- REWIRE THE DATA FOR WIDEBAND POLY PHASE FILTER
|
499 |
|
|
---------------------------------------------------------------
|
500 |
|
|
|
501 |
|
|
-- Wire in_sosi_arr --> fil_in_arr
|
502 |
|
|
wire_fil_in_wideband: for P in 0 to g_wpfb.wb_factor-1 generate
|
503 |
|
|
wire_fil_in_streams: for S in 0 to g_wpfb.nof_wb_streams-1 generate
|
504 |
|
|
fil_in_arr(P*g_wpfb.nof_wb_streams*c_nof_complex+S*c_nof_complex) <= RESIZE_SVEC_32(r.in_sosi_arr(S*g_wpfb.wb_factor+P).re(g_wpfb.fil_in_dat_w-1 downto 0));
|
505 |
|
|
fil_in_arr(P*g_wpfb.nof_wb_streams*c_nof_complex+S*c_nof_complex+1) <= RESIZE_SVEC_32(r.in_sosi_arr(S*g_wpfb.wb_factor+P).im(g_wpfb.fil_in_dat_w-1 downto 0));
|
506 |
|
|
end generate;
|
507 |
|
|
end generate;
|
508 |
|
|
fil_in_val <= r.in_sosi_arr(0).valid;
|
509 |
|
|
|
510 |
|
|
-- Wire fil_out_arr --> fil_sosi_arr
|
511 |
|
|
wire_fil_sosi_streams: for S in 0 to g_wpfb.nof_wb_streams-1 generate
|
512 |
|
|
wire_fil_sosi_wideband: for P in 0 to g_wpfb.wb_factor-1 generate
|
513 |
|
|
fil_sosi_arr(S*g_wpfb.wb_factor+P).valid <= fil_out_val;
|
514 |
|
|
fil_sosi_arr(S*g_wpfb.wb_factor+P).re <= RESIZE_DP_DSP_DATA(fil_out_arr(P*g_wpfb.nof_wb_streams*c_nof_complex+S*c_nof_complex ));
|
515 |
|
|
fil_sosi_arr(S*g_wpfb.wb_factor+P).im <= RESIZE_DP_DSP_DATA(fil_out_arr(P*g_wpfb.nof_wb_streams*c_nof_complex+S*c_nof_complex+1));
|
516 |
|
|
end generate;
|
517 |
|
|
end generate;
|
518 |
|
|
|
519 |
|
|
-- Wire fil_out_arr --> fft_in_re_arr, fft_in_im_arr
|
520 |
|
|
wire_fft_in_streams: for S in 0 to g_wpfb.nof_wb_streams-1 generate
|
521 |
|
|
wire_fft_in_wideband: for P in 0 to g_wpfb.wb_factor-1 generate
|
522 |
|
|
fft_in_re_arr(S*g_wpfb.wb_factor + P) <= fil_out_arr(P*g_wpfb.nof_wb_streams*c_nof_complex+S*c_nof_complex);
|
523 |
|
|
fft_in_im_arr(S*g_wpfb.wb_factor + P) <= fil_out_arr(P*g_wpfb.nof_wb_streams*c_nof_complex+S*c_nof_complex+1);
|
524 |
|
|
end generate;
|
525 |
|
|
end generate;
|
526 |
|
|
|
527 |
|
|
---------------------------------------------------------------
|
528 |
|
|
-- THE POLY PHASE FILTER
|
529 |
|
|
---------------------------------------------------------------
|
530 |
|
|
gen_prefilter : IF g_use_prefilter = TRUE generate
|
531 |
|
|
u_filter : entity astron_filter_lib.fil_ppf_wide
|
532 |
|
|
generic map (
|
533 |
|
|
g_big_endian_wb_in => g_big_endian_wb_in,
|
534 |
|
|
g_big_endian_wb_out => false, -- reverse wideband order from big-endian [3:0] = [t0,t1,t2,t3] in fil_ppf_wide to little-endian [3:0] = [t3,t2,t1,t0] in fft_r2_wide
|
535 |
|
|
g_fil_ppf => c_fil_ppf,
|
536 |
|
|
g_fil_ppf_pipeline => g_wpfb.fil_pipeline,
|
537 |
|
|
g_coefs_file_prefix => g_coefs_file_prefix
|
538 |
|
|
)
|
539 |
|
|
port map (
|
540 |
|
|
dp_clk => dp_clk,
|
541 |
|
|
dp_rst => dp_rst,
|
542 |
|
|
mm_clk => mm_clk,
|
543 |
|
|
mm_rst => mm_rst,
|
544 |
|
|
ram_coefs_mosi => ram_fil_coefs_mosi,
|
545 |
|
|
ram_coefs_miso => ram_fil_coefs_miso,
|
546 |
|
|
in_dat_arr => fil_in_arr,
|
547 |
|
|
in_val => fil_in_val,
|
548 |
|
|
out_dat_arr => fil_out_arr,
|
549 |
|
|
out_val => fil_out_val
|
550 |
|
|
);
|
551 |
|
|
end generate;
|
552 |
|
|
|
553 |
|
|
-- Bypass filter
|
554 |
|
|
no_prefilter : if g_use_prefilter = FALSE generate
|
555 |
|
|
fil_out_arr <= fil_in_arr;
|
556 |
|
|
fil_out_val <= fil_in_val;
|
557 |
|
|
end generate;
|
558 |
|
|
|
559 |
|
|
fft_in_val <= fil_out_val;
|
560 |
|
|
|
561 |
|
|
---------------------------------------------------------------
|
562 |
|
|
-- THE WIDEBAND FFT
|
563 |
|
|
---------------------------------------------------------------
|
564 |
|
|
gen_wideband_fft: if g_wpfb.wb_factor > 1 generate
|
565 |
|
|
gen_fft_r2_wide_streams: for S in 0 to g_wpfb.nof_wb_streams-1 generate
|
566 |
|
|
u_fft_r2_wide : entity astron_wb_fft_lib.fft_r2_wide
|
567 |
|
|
generic map(
|
568 |
|
|
g_fft => c_fft, -- generics for the WFFT
|
569 |
|
|
g_pft_pipeline => g_wpfb.pft_pipeline,
|
570 |
|
|
g_fft_pipeline => g_wpfb.fft_pipeline
|
571 |
|
|
)
|
572 |
|
|
port map(
|
573 |
|
|
clk => dp_clk,
|
574 |
|
|
rst => dp_rst,
|
575 |
|
|
in_re_arr => fft_in_re_arr((S+1)*g_wpfb.wb_factor-1 downto S*g_wpfb.wb_factor),
|
576 |
|
|
in_im_arr => fft_in_im_arr((S+1)*g_wpfb.wb_factor-1 downto S*g_wpfb.wb_factor),
|
577 |
|
|
in_val => fft_in_val,
|
578 |
|
|
out_re_arr => fft_out_re_arr((S+1)*g_wpfb.wb_factor-1 downto S*g_wpfb.wb_factor),
|
579 |
|
|
out_im_arr => fft_out_im_arr((S+1)*g_wpfb.wb_factor-1 downto S*g_wpfb.wb_factor),
|
580 |
|
|
out_val => fft_out_val_arr(S)
|
581 |
|
|
);
|
582 |
|
|
end generate;
|
583 |
|
|
end generate;
|
584 |
|
|
|
585 |
|
|
---------------------------------------------------------------
|
586 |
|
|
-- THE PIPELINED FFT
|
587 |
|
|
---------------------------------------------------------------
|
588 |
|
|
gen_pipeline_fft: if g_wpfb.wb_factor = 1 generate
|
589 |
|
|
gen_fft_r2_pipe_streams: for S in 0 to g_wpfb.nof_wb_streams-1 generate
|
590 |
|
|
u_fft_r2_pipe : entity astron_wb_fft_lib.fft_r2_pipe
|
591 |
|
|
generic map(
|
592 |
|
|
g_fft => c_fft,
|
593 |
|
|
g_dont_flip_channels => g_dont_flip_channels,
|
594 |
|
|
g_pipeline => g_wpfb.fft_pipeline
|
595 |
|
|
)
|
596 |
|
|
port map(
|
597 |
|
|
clk => dp_clk,
|
598 |
|
|
rst => dp_rst,
|
599 |
|
|
in_re => fft_in_re_arr(S)(c_fft.in_dat_w-1 downto 0),
|
600 |
|
|
in_im => fft_in_im_arr(S)(c_fft.in_dat_w-1 downto 0),
|
601 |
|
|
in_val => fft_in_val,
|
602 |
|
|
out_re => fft_out_re_arr_i(S)(c_fft.out_dat_w-1 downto 0),
|
603 |
|
|
out_im => fft_out_im_arr_i(S)(c_fft.out_dat_w-1 downto 0),
|
604 |
|
|
out_val => fft_out_val_arr(S)
|
605 |
|
|
);
|
606 |
|
|
|
607 |
|
|
fft_out_re_arr(S) <= RESIZE_SVEC_32(fft_out_re_arr_i(S)(c_fft.out_dat_w-1 downto 0));
|
608 |
|
|
fft_out_im_arr(S) <= RESIZE_SVEC_32(fft_out_im_arr_i(S)(c_fft.out_dat_w-1 downto 0));
|
609 |
|
|
end generate;
|
610 |
|
|
end generate;
|
611 |
|
|
|
612 |
|
|
---------------------------------------------------------------
|
613 |
|
|
-- FFT CONTROL UNIT
|
614 |
|
|
---------------------------------------------------------------
|
615 |
|
|
|
616 |
|
|
-- Capture input BSN at input sync and pass the captured input BSN it on to PFB output sync.
|
617 |
|
|
-- The FFT output valid defines PFB output sync, sop, eop.
|
618 |
|
|
|
619 |
|
|
fft_out_sosi.sync <= r.in_sosi_arr(0).sync;
|
620 |
|
|
fft_out_sosi.bsn <= r.in_sosi_arr(0).bsn;
|
621 |
|
|
fft_out_sosi.valid <= fft_out_val_arr(0);
|
622 |
|
|
|
623 |
|
|
wire_fft_out_sosi_arr : for I in 0 to g_wpfb.nof_wb_streams*g_wpfb.wb_factor-1 generate
|
624 |
|
|
fft_out_sosi_arr(I).re <= RESIZE_DP_DSP_DATA(fft_out_re_arr(I));
|
625 |
|
|
fft_out_sosi_arr(I).im <= RESIZE_DP_DSP_DATA(fft_out_im_arr(I));
|
626 |
|
|
fft_out_sosi_arr(I).valid <= fft_out_val_arr(I);
|
627 |
|
|
end generate;
|
628 |
|
|
|
629 |
|
|
u_dp_block_gen_valid_arr : ENTITY work.dp_block_gen_valid_arr
|
630 |
|
|
GENERIC MAP (
|
631 |
|
|
g_nof_streams => g_wpfb.nof_wb_streams*g_wpfb.wb_factor,
|
632 |
|
|
g_nof_data_per_block => c_nof_valid_per_block,
|
633 |
|
|
g_nof_blk_per_sync => g_wpfb.nof_blk_per_sync,
|
634 |
|
|
g_check_input_sync => false,
|
635 |
|
|
g_nof_pages_bsn => 1,
|
636 |
|
|
g_restore_global_bsn => true
|
637 |
|
|
)
|
638 |
|
|
PORT MAP (
|
639 |
|
|
rst => dp_rst,
|
640 |
|
|
clk => dp_clk,
|
641 |
|
|
-- Streaming sink
|
642 |
|
|
snk_in => fft_out_sosi,
|
643 |
|
|
snk_in_arr => fft_out_sosi_arr,
|
644 |
|
|
-- Streaming source
|
645 |
|
|
src_out_arr => pfb_out_sosi_arr,
|
646 |
|
|
-- Control
|
647 |
|
|
enable => '1'
|
648 |
|
|
);
|
649 |
|
|
end generate;
|
650 |
|
|
|
651 |
|
|
----------------------------------------------------------------------------
|
652 |
|
|
-- Source: block generator
|
653 |
|
|
----------------------------------------------------------------------------
|
654 |
|
|
gen_bg : if g_use_bg = TRUE generate
|
655 |
|
|
u_bg : entity astron_diagnostics_lib.mms_diag_block_gen
|
656 |
|
|
generic map(
|
657 |
|
|
g_nof_streams => g_wpfb.nof_wb_streams*g_wpfb.wb_factor,
|
658 |
|
|
g_buf_dat_w => c_nof_complex*g_wpfb.fft_out_dat_w,
|
659 |
|
|
g_buf_addr_w => c_bg_buf_adr_w, -- Waveform buffer size 2**g_buf_addr_w nof samples
|
660 |
|
|
g_file_index_arr => c_bg_data_file_index_arr,
|
661 |
|
|
g_file_name_prefix => c_bg_data_file_prefix
|
662 |
|
|
)
|
663 |
|
|
port map(
|
664 |
|
|
-- System
|
665 |
|
|
mm_rst => mm_rst,
|
666 |
|
|
mm_clk => mm_clk,
|
667 |
|
|
dp_rst => dp_rst,
|
668 |
|
|
dp_clk => dp_clk,
|
669 |
|
|
en_sync => '0',
|
670 |
|
|
-- MM interface
|
671 |
|
|
reg_bg_ctrl_mosi => reg_bg_ctrl_mosi,
|
672 |
|
|
reg_bg_ctrl_miso => reg_bg_ctrl_miso,
|
673 |
|
|
ram_bg_data_mosi => ram_bg_data_mosi,
|
674 |
|
|
ram_bg_data_miso => ram_bg_data_miso,
|
675 |
|
|
-- ST interface
|
676 |
|
|
out_sosi_arr => pfb_out_sosi_arr
|
677 |
|
|
);
|
678 |
|
|
end generate;
|
679 |
|
|
|
680 |
|
|
---------------------------------------------------------------
|
681 |
|
|
-- SUBBAND STATISTICS
|
682 |
|
|
---------------------------------------------------------------
|
683 |
|
|
-- For all "wb_factor"x"nof_wb_streams" output streams of the
|
684 |
|
|
-- wideband FFT a subband statistics unit is placed if the
|
685 |
|
|
-- g_stats_ena is TRUE.
|
686 |
|
|
-- Since the subband statistics module uses embedded DSP blocks
|
687 |
|
|
-- for multiplication, the incoming data cannot be wider
|
688 |
|
|
-- than 18 bit.
|
689 |
|
|
gen_stats : if g_stats_ena = TRUE generate
|
690 |
|
|
gen_stats_streams: for S in 0 to g_wpfb.nof_wb_streams-1 generate
|
691 |
|
|
gen_stats_wideband: for P in 0 to g_wpfb.wb_factor-1 generate
|
692 |
|
|
u_subband_stats : entity astron_statistics_lib.st_sst
|
693 |
|
|
generic map(
|
694 |
|
|
g_nof_stat => c_nof_stats,
|
695 |
|
|
g_in_data_w => g_wpfb.fft_out_dat_w,
|
696 |
|
|
g_stat_data_w => g_wpfb.stat_data_w,
|
697 |
|
|
g_stat_data_sz => g_wpfb.stat_data_sz
|
698 |
|
|
)
|
699 |
|
|
port map (
|
700 |
|
|
mm_rst => mm_rst,
|
701 |
|
|
mm_clk => mm_clk,
|
702 |
|
|
dp_rst => dp_rst,
|
703 |
|
|
dp_clk => dp_clk,
|
704 |
|
|
in_complex => pfb_out_sosi_arr(S*g_wpfb.wb_factor+P),
|
705 |
|
|
ram_st_sst_mosi => ram_st_sst_mosi_arr(S*g_wpfb.wb_factor+P),
|
706 |
|
|
ram_st_sst_miso => ram_st_sst_miso_arr(S*g_wpfb.wb_factor+P)
|
707 |
|
|
);
|
708 |
|
|
end generate;
|
709 |
|
|
end generate;
|
710 |
|
|
end generate;
|
711 |
|
|
|
712 |
|
|
-- Connect to the outside world
|
713 |
|
|
out_sosi_arr <= pfb_out_sosi_arr;
|
714 |
|
|
|
715 |
|
|
end str;
|
716 |
|
|
|
717 |
|
|
|
718 |
|
|
|