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LIBRARY ieee;
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USE ieee.std_logic_1164.ALL;
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USE ieee.numeric_std.ALL;
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LIBRARY lpp;
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USE lpp.lpp_ad_conv.ALL;
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USE lpp.iir_filter.ALL;
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USE lpp.FILTERcfg.ALL;
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USE lpp.lpp_memory.ALL;
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--USE lpp.lpp_waveform_pkg.ALL;
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USE lpp.lpp_dma_pkg.ALL;
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--USE lpp.lpp_top_lfr_pkg.ALL;
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--USE lpp.lpp_lfr_pkg.ALL;
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USE lpp.general_purpose.ALL;
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LIBRARY techmap;
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USE techmap.gencomp.ALL;
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LIBRARY grlib;
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USE grlib.amba.ALL;
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USE grlib.stdlib.ALL;
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USE grlib.devices.ALL;
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USE GRLIB.DMA2AHB_Package.ALL;
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ENTITY DMA_SubSystem_Arbiter IS
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PORT (
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clk : IN STD_LOGIC;
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rstn : IN STD_LOGIC;
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run : IN STD_LOGIC;
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--
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data_burst_valid : IN STD_LOGIC_VECTOR(4 DOWNTO 0);
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data_burst_valid_grant : OUT STD_LOGIC_VECTOR(4 DOWNTO 0)
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);
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END DMA_SubSystem_Arbiter;
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ARCHITECTURE beh OF DMA_SubSystem_Arbiter IS
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SIGNAL data_burst_valid_r : STD_LOGIC_VECTOR(4 DOWNTO 0);
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SIGNAL dma_rr_grant_s : STD_LOGIC_VECTOR(3 DOWNTO 0);
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SIGNAL dma_rr_grant_ms : STD_LOGIC_VECTOR(3 DOWNTO 0);
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SIGNAL dma_rr_valid_ms : STD_LOGIC_VECTOR(3 DOWNTO 0);
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BEGIN -- beh
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-----------------------------------------------------------------------------
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-- REG the burst valid signal
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-----------------------------------------------------------------------------
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PROCESS (clk, rstn)
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BEGIN -- PROCESS
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IF rstn = '0' THEN -- asynchronous reset (active low)
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data_burst_valid_r <= (OTHERS => '0');
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ELSIF clk'event AND clk = '1' THEN -- rising clock edge
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IF run = '1' THEN
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data_burst_valid_r <= data_burst_valid;
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ELSE
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data_burst_valid_r <= (OTHERS => '0');
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END IF;
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END IF;
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END PROCESS;
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-----------------------------------------------------------------------------
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-- ARBITER Between all the "WAVEFORM_PICKER" channel
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-----------------------------------------------------------------------------
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RR_Arbiter_4_1 : RR_Arbiter_4
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PORT MAP (
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clk => clk,
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rstn => rstn,
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in_valid => data_burst_valid_r(3 DOWNTO 0),
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out_grant => dma_rr_grant_s);
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dma_rr_valid_ms(0) <= data_burst_valid_r(4);--data_ms_valid OR data_ms_valid_burst;
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dma_rr_valid_ms(1) <= '0' WHEN dma_rr_grant_s = "0000" ELSE '1';
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dma_rr_valid_ms(2) <= '0';
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dma_rr_valid_ms(3) <= '0';
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-----------------------------------------------------------------------------
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-- ARBITER Between all the "WAVEFORM_PICKER" and "SPECTRAL MATRIX"
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-----------------------------------------------------------------------------
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RR_Arbiter_4_2 : RR_Arbiter_4
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PORT MAP (
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clk => clk,
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rstn => rstn,
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in_valid => dma_rr_valid_ms,
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out_grant => dma_rr_grant_ms);
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data_burst_valid_grant <= dma_rr_grant_ms(0) & "0000" WHEN dma_rr_grant_ms(0) = '1' ELSE '0' & dma_rr_grant_s;
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END beh;
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