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2 | LIBRARY IEEE; |
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2 | LIBRARY IEEE; | |
3 | USE IEEE.STD_LOGIC_1164.ALL; |
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3 | USE IEEE.STD_LOGIC_1164.ALL; | |
4 | LIBRARY lpp; |
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4 | LIBRARY lpp; | |
5 | USE lpp.lpp_ad_conv.ALL; |
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5 | USE lpp.lpp_ad_conv.ALL; | |
6 | USE lpp.general_purpose.SYNC_FF; |
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6 | USE lpp.general_purpose.SYNC_FF; | |
7 |
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7 | |||
8 | ENTITY top_ad_conv_RHF1401 IS |
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8 | ENTITY top_ad_conv_RHF1401 IS | |
9 | GENERIC( |
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9 | GENERIC( | |
10 | ChanelCount : INTEGER := 8; |
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10 | ChanelCount : INTEGER := 8; | |
11 | ncycle_cnv_high : INTEGER := 79; |
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11 | ncycle_cnv_high : INTEGER := 79; | |
12 | ncycle_cnv : INTEGER := 500); |
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12 | ncycle_cnv : INTEGER := 500); | |
13 | PORT ( |
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13 | PORT ( | |
14 | cnv_clk : IN STD_LOGIC; |
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14 | cnv_clk : IN STD_LOGIC; | |
15 | cnv_rstn : IN STD_LOGIC; |
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15 | cnv_rstn : IN STD_LOGIC; | |
16 |
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16 | |||
17 | cnv : OUT STD_LOGIC; |
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17 | cnv : OUT STD_LOGIC; | |
18 |
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18 | |||
19 | clk : IN STD_LOGIC; |
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19 | clk : IN STD_LOGIC; | |
20 | rstn : IN STD_LOGIC; |
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20 | rstn : IN STD_LOGIC; | |
21 | ADC_data : IN Samples14; |
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21 | ADC_data : IN Samples14; | |
22 | ADC_nOE : OUT STD_LOGIC_VECTOR(ChanelCount-1 DOWNTO 0); |
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22 | ADC_nOE : OUT STD_LOGIC_VECTOR(ChanelCount-1 DOWNTO 0); | |
23 | sample : OUT Samples14v(ChanelCount-1 DOWNTO 0); |
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23 | sample : OUT Samples14v(ChanelCount-1 DOWNTO 0); | |
24 | sample_val : OUT STD_LOGIC |
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24 | sample_val : OUT STD_LOGIC | |
25 | ); |
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25 | ); | |
26 | END top_ad_conv_RHF1401; |
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26 | END top_ad_conv_RHF1401; | |
27 |
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27 | |||
28 | ARCHITECTURE ar_top_ad_conv_RHF1401 OF top_ad_conv_RHF1401 IS |
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28 | ARCHITECTURE ar_top_ad_conv_RHF1401 OF top_ad_conv_RHF1401 IS | |
29 |
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29 | |||
30 | SIGNAL cnv_cycle_counter : INTEGER; |
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30 | SIGNAL cnv_cycle_counter : INTEGER; | |
31 | SIGNAL cnv_s : STD_LOGIC; |
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31 | SIGNAL cnv_s : STD_LOGIC; | |
32 | SIGNAL cnv_sync : STD_LOGIC; |
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32 | SIGNAL cnv_sync : STD_LOGIC; | |
33 |
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33 | |||
34 | BEGIN |
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34 | BEGIN | |
35 |
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35 | |||
36 |
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36 | |||
37 | ----------------------------------------------------------------------------- |
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37 | ----------------------------------------------------------------------------- | |
38 | -- CONV |
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38 | -- CONV | |
39 | ----------------------------------------------------------------------------- |
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39 | ----------------------------------------------------------------------------- | |
40 | PROCESS (cnv_clk, cnv_rstn) |
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40 | PROCESS (cnv_clk, cnv_rstn) | |
41 | BEGIN -- PROCESS |
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41 | BEGIN -- PROCESS | |
42 | IF cnv_rstn = '0' THEN -- asynchronous reset (active low) |
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42 | IF cnv_rstn = '0' THEN -- asynchronous reset (active low) | |
43 | cnv_cycle_counter <= 0; |
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43 | cnv_cycle_counter <= 0; | |
44 | cnv_s <= '0'; |
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44 | cnv_s <= '0'; | |
45 | ELSIF cnv_clk'EVENT AND cnv_clk = '1' THEN -- rising clock edge |
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45 | ELSIF cnv_clk'EVENT AND cnv_clk = '1' THEN -- rising clock edge | |
46 | -- IF cnv_run = '1' THEN |
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46 | -- IF cnv_run = '1' THEN | |
47 | IF cnv_cycle_counter < ncycle_cnv THEN |
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47 | IF cnv_cycle_counter < ncycle_cnv-1 THEN | |
48 | cnv_cycle_counter <= cnv_cycle_counter +1; |
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48 | cnv_cycle_counter <= cnv_cycle_counter +1; | |
49 | IF cnv_cycle_counter < ncycle_cnv_high THEN |
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49 | IF cnv_cycle_counter < ncycle_cnv_high THEN | |
50 | cnv_s <= '1'; |
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50 | cnv_s <= '1'; | |
51 | ELSE |
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51 | ELSE | |
52 | cnv_s <= '0'; |
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52 | cnv_s <= '0'; | |
53 | END IF; |
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53 | END IF; | |
54 | ELSE |
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54 | ELSE | |
55 | cnv_s <= '1'; |
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55 | cnv_s <= '1'; | |
56 | cnv_cycle_counter <= 0; |
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56 | cnv_cycle_counter <= 0; | |
57 | END IF; |
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57 | END IF; | |
58 | --ELSE |
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58 | --ELSE | |
59 | -- cnv_s <= '0'; |
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59 | -- cnv_s <= '0'; | |
60 | -- cnv_cycle_counter <= 0; |
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60 | -- cnv_cycle_counter <= 0; | |
61 | --END IF; |
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61 | --END IF; | |
62 | END IF; |
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62 | END IF; | |
63 | END PROCESS; |
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63 | END PROCESS; | |
64 |
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64 | |||
65 | cnv <= cnv_s; |
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65 | cnv <= cnv_s; | |
66 |
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66 | |||
67 |
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67 | |||
68 | ----------------------------------------------------------------------------- |
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68 | ----------------------------------------------------------------------------- | |
69 | -- SYNC CNV |
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69 | -- SYNC CNV | |
70 | ----------------------------------------------------------------------------- |
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70 | ----------------------------------------------------------------------------- | |
71 |
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71 | |||
72 | SYNC_FF_cnv : SYNC_FF |
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72 | SYNC_FF_cnv : SYNC_FF | |
73 | GENERIC MAP ( |
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73 | GENERIC MAP ( | |
74 | NB_FF_OF_SYNC => 2) |
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74 | NB_FF_OF_SYNC => 2) | |
75 | PORT MAP ( |
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75 | PORT MAP ( | |
76 | clk => clk, |
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76 | clk => clk, | |
77 | rstn => rstn, |
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77 | rstn => rstn, | |
78 | A => cnv_s, |
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78 | A => cnv_s, | |
79 | A_sync => cnv_sync); |
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79 | A_sync => cnv_sync); | |
80 |
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80 | |||
81 | ----------------------------------------------------------------------------- |
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81 | ----------------------------------------------------------------------------- | |
82 | RHF1401_drvr_1: RHF1401_drvr |
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82 | RHF1401_drvr_1: RHF1401_drvr | |
83 | GENERIC MAP ( |
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83 | GENERIC MAP ( | |
84 | ChanelCount => ChanelCount) |
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84 | ChanelCount => ChanelCount) | |
85 | PORT MAP ( |
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85 | PORT MAP ( | |
86 | cnv_clk => cnv_sync, |
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86 | cnv_clk => cnv_sync, | |
87 | clk => clk, |
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87 | clk => clk, | |
88 | rstn => rstn, |
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88 | rstn => rstn, | |
89 | ADC_data => ADC_data, |
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89 | ADC_data => ADC_data, | |
90 | --ADC_smpclk => OPEN, |
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90 | --ADC_smpclk => OPEN, | |
91 | ADC_nOE => ADC_nOE, |
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91 | ADC_nOE => ADC_nOE, | |
92 | sample => sample, |
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92 | sample => sample, | |
93 | sample_val => sample_val); |
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93 | sample_val => sample_val); | |
94 |
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94 | |||
95 |
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97 |
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97 | |||
98 | END ar_top_ad_conv_RHF1401; |
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98 | END ar_top_ad_conv_RHF1401; | |
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