| Line 30... |
Line 30... |
-- The size of the dual page memory is determined by g_nof_points.
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-- The size of the dual page memory is determined by g_nof_points.
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--
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--
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-- Remarks: . This unit is only suitable for the pipelined fft (fft_r2_pipe).
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-- Remarks: . This unit is only suitable for the pipelined fft (fft_r2_pipe).
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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_ram_lib;
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library ieee, common_pkg_lib, astron_counter_lib, astron_ram_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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|
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| Line 147... |
Line 147... |
gen_bit_flip_spectrum_only : if g_dont_flip_channels=true generate -- the channel interleaving in time is preserved
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gen_bit_flip_spectrum_only : if g_dont_flip_channels=true generate -- the channel interleaving in time is preserved
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wr_adr <= adr_fft_flip & adr_chan_cnt;
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wr_adr <= adr_fft_flip & adr_chan_cnt;
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end generate;
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end generate;
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end generate;
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end generate;
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|
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u_adr_point_cnt : entity common_counter_lib.common_counter
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u_adr_point_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 => ceil_log2(g_nof_points)
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g_width => ceil_log2(g_nof_points)
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)
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)
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| Line 168... |
Line 168... |
end generate;
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end generate;
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more_chan : if c_nof_channels>1 generate
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more_chan : if c_nof_channels>1 generate
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cnt_ena <= '1' when in_val = '1' and TO_UINT(adr_chan_cnt) = c_nof_channels-1 else '0';
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cnt_ena <= '1' when in_val = '1' and TO_UINT(adr_chan_cnt) = c_nof_channels-1 else '0';
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end generate;
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end generate;
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|
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u_adr_chan_cnt : entity common_counter_lib.common_counter
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u_adr_chan_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 => g_nof_chan
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g_width => g_nof_chan
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)
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)
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| Line 181... |
Line 181... |
clk => clk,
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clk => clk,
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cnt_en => in_val,
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cnt_en => in_val,
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count => adr_chan_cnt
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count => adr_chan_cnt
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);
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);
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|
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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 => 2,
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g_nof_pages => 2,
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g_page_sz => c_page_size,
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g_page_sz => c_page_size,
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