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LIBRARY IEEE;
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USE IEEE.STD_LOGIC_1164.ALL;
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LIBRARY lpp;
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USE lpp.lpp_ad_conv.ALL;
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USE lpp.general_purpose.SYNC_FF;
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ENTITY top_ad_conv_RHF1401 IS
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GENERIC(
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ChanelCount : INTEGER := 8;
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ncycle_cnv_high : INTEGER := 79;
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ncycle_cnv : INTEGER := 500);
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PORT (
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cnv_clk : IN STD_LOGIC;
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cnv_rstn : IN STD_LOGIC;
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cnv : OUT STD_LOGIC;
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clk : IN STD_LOGIC;
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rstn : IN STD_LOGIC;
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ADC_data : IN Samples14;
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ADC_nOE : OUT STD_LOGIC_VECTOR(ChanelCount-1 DOWNTO 0);
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sample : OUT Samples14v(ChanelCount-1 DOWNTO 0);
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sample_val : OUT STD_LOGIC
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);
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END top_ad_conv_RHF1401;
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ARCHITECTURE ar_top_ad_conv_RHF1401 OF top_ad_conv_RHF1401 IS
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SIGNAL cnv_cycle_counter : INTEGER;
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SIGNAL cnv_s : STD_LOGIC;
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SIGNAL cnv_sync : STD_LOGIC;
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BEGIN
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-----------------------------------------------------------------------------
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-- CONV
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-----------------------------------------------------------------------------
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PROCESS (cnv_clk, cnv_rstn)
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BEGIN -- PROCESS
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IF cnv_rstn = '0' THEN -- asynchronous reset (active low)
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cnv_cycle_counter <= 0;
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cnv_s <= '0';
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ELSIF cnv_clk'EVENT AND cnv_clk = '1' THEN -- rising clock edge
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-- IF cnv_run = '1' THEN
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IF cnv_cycle_counter < ncycle_cnv-1 THEN
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cnv_cycle_counter <= cnv_cycle_counter +1;
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IF cnv_cycle_counter < ncycle_cnv_high THEN
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cnv_s <= '1';
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ELSE
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cnv_s <= '0';
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END IF;
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ELSE
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cnv_s <= '1';
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cnv_cycle_counter <= 0;
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END IF;
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--ELSE
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-- cnv_s <= '0';
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-- cnv_cycle_counter <= 0;
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--END IF;
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END IF;
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END PROCESS;
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cnv <= cnv_s;
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-----------------------------------------------------------------------------
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-- SYNC CNV
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-----------------------------------------------------------------------------
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SYNC_FF_cnv : SYNC_FF
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GENERIC MAP (
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NB_FF_OF_SYNC => 2)
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PORT MAP (
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clk => clk,
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rstn => rstn,
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A => cnv_s,
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A_sync => cnv_sync);
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-----------------------------------------------------------------------------
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RHF1401_drvr_1: RHF1401_drvr
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GENERIC MAP (
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ChanelCount => ChanelCount)
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PORT MAP (
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cnv_clk => cnv_sync,
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clk => clk,
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rstn => rstn,
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ADC_data => ADC_data,
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--ADC_smpclk => OPEN,
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ADC_nOE => ADC_nOE,
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sample => sample,
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sample_val => sample_val);
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END ar_top_ad_conv_RHF1401;
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