| Line 35... |
Line 35... |
-- the separated data in an interleaved stream: A, B, A, B etc (for both real and imaginary part)
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-- the separated data in an interleaved stream: A, B, A, B etc (for both real and imaginary part)
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-- The last stage contains pipeline stages that are required for allignment
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-- The last stage contains pipeline stages that are required for allignment
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-- and additional pipeling.
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-- and additional pipeling.
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--
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--
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|
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library ieee, common_pkg_lib, common_counter_lib, common_components_lib, common_ram_lib, common_multiplexer_lib;
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library ieee, common_pkg_lib, astron_counter_lib, common_components_lib, astron_ram_lib, astron_multiplexer_lib;
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use IEEE.std_logic_1164.all;
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use IEEE.std_logic_1164.all;
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use IEEE.numeric_std.all;
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use IEEE.numeric_std.all;
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use common_pkg_lib.common_pkg.all;
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use common_pkg_lib.common_pkg.all;
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use work.fft_pkg.all;
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use work.fft_pkg.all;
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| Line 116... |
Line 116... |
-- Prepare the write control signals for the memories.
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-- Prepare the write control signals for the memories.
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wr_en <= in_val;
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wr_en <= in_val;
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next_page <= '1' when unsigned(wr_adr) = c_page_size-1 and wr_en='1' else '0';
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next_page <= '1' when unsigned(wr_adr) = c_page_size-1 and wr_en='1' else '0';
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-- Counter will generate the write address
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-- Counter will generate the write address
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u_wr_adr_cnt : entity common_counter_lib.common_counter
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u_wr_adr_cnt : entity astron_counter_lib.common_counter
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generic map(
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generic map(
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g_latency => 1,
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g_latency => 1,
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g_init => 0,
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g_init => 0,
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g_width => c_adr_w
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g_width => c_adr_w
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)
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)
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| Line 131... |
Line 131... |
count => wr_adr
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count => wr_adr
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);
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);
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-- Instantiation of the rams.
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-- Instantiation of the rams.
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gen_dual_paged_rams : for I in g_fft.wb_factor - 1 downto 0 generate
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gen_dual_paged_rams : for I in g_fft.wb_factor - 1 downto 0 generate
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u_buff : entity common_ram_lib.common_paged_ram_r_w
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u_buff : entity astron_ram_lib.common_paged_ram_r_w
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generic map (
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generic map (
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g_str => "use_adr",
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g_str => "use_adr",
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g_data_w => c_dat_w,
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g_data_w => c_dat_w,
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g_nof_pages => c_nof_pages,
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g_nof_pages => c_nof_pages,
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g_page_sz => c_page_size,
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g_page_sz => c_page_size,
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| Line 183... |
Line 183... |
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-- The instantiation of the zip units and the separation units.
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-- The instantiation of the zip units and the separation units.
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-- The output of the zip units is connected to the input of the
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-- The output of the zip units is connected to the input of the
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-- adjacent separate unit.
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-- adjacent separate unit.
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gen_separators : for I in g_fft.wb_factor - 1 downto 0 generate
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gen_separators : for I in g_fft.wb_factor - 1 downto 0 generate
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u_zipper : entity common_multiplexer_lib.common_zip
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u_zipper : entity astron_multiplexer_lib.common_zip
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generic map (
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generic map (
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g_nof_streams => c_nof_streams,
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g_nof_streams => c_nof_streams,
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g_dat_w => c_dat_w
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g_dat_w => c_dat_w
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)
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)
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port map (
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port map (
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