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ashematian |
--ADPCM 1-Bit Stereo Decoder.
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--On Cyclone-II Starter Kit
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--Author: Amir Shahram Hematian
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--Date&Time: 2010/Feb/21 19:04
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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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entity HD_ADPCM_Codec is
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port (
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CLOCK_IN : IN STD_LOGIC;
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S_SEVEN_SEGMENT_1_OUT : OUT STD_LOGIC_VECTOR (6 downto 0);
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S_SEVEN_SEGMENT_2_OUT : OUT STD_LOGIC_VECTOR (6 downto 0);
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S_SEVEN_SEGMENT_3_OUT : OUT STD_LOGIC_VECTOR (6 downto 0);
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S_SEVEN_SEGMENT_4_OUT : OUT STD_LOGIC_VECTOR (6 downto 0);
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S_RED_LEDS_OUT : OUT STD_LOGIC_VECTOR (9 downto 0);
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I2C_CLOCK_OUT : OUT STD_LOGIC;
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I2C_DATA_INOUT : INOUT STD_LOGIC;
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I2S_LEFT_RIGHT_CLOCK_OUT: OUT STD_LOGIC;
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I2S_CLOCK_OUT : OUT STD_LOGIC;
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I2S_DATA_INOUT : INOUT STD_LOGIC;
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I2S_CORE_CLOCK_OUT : OUT STD_LOGIC;
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SWITCH_0 : IN STD_LOGIC;
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KEY_0 : IN STD_LOGIC;
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KEY_1 : IN STD_LOGIC;
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FLASH_MEMORY_ADDRESS_OUT: OUT STD_LOGIC_VECTOR (21 downto 0);
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FLASH_MEMORY_DATA_INOUT : INOUT STD_LOGIC_VECTOR (7 downto 0);
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FLASH_MEMORY_nWE_OUT : OUT STD_LOGIC;
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FLASH_MEMORY_nOE_OUT : OUT STD_LOGIC;
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FLASH_MEMORY_nRESET_OUT : OUT STD_LOGIC;
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FLASH_MEMORY_nCE_OUT : OUT STD_LOGIC
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);
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end HD_ADPCM_Codec;
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architecture HD_ADPCM_Codec_Function of HD_ADPCM_Codec is
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component SevenSegments_Driver
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port (
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DIGIT_1_IN, DIGIT_2_IN, DIGIT_3_IN, DIGIT_4_IN : in integer range 0 to 15;
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SEVEN_SEGMENT_1_OUT, SEVEN_SEGMENT_2_OUT, SEVEN_SEGMENT_3_OUT, SEVEN_SEGMENT_4_OUT : out STD_LOGIC_VECTOR (6 downto 0)
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);
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end component;
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component LEDs_Bar_Driver
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port (
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SAMPLE_VALUE : IN INTEGER RANGE 0 to 10;
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LEDS_OUT : OUT STD_LOGIC_VECTOR (9 downto 0)
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);
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end component;
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component I2C_Driver
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port (
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CLOCK_IN : IN STD_LOGIC;
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ACTIVE_IN : IN STD_LOGIC;
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SLAVE_ADDRESS, REGISTER_ADDRESS : IN STD_LOGIC_VECTOR(7 downto 0);
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REGISTER_DATA : IN STD_LOGIC_VECTOR(7 downto 0);
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I2C_CLOCK : OUT STD_LOGIC;
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I2C_DATA : INOUT STD_LOGIC
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);
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end component;
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component I2S_Driver
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port (
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CLOCK_IN : IN STD_LOGIC;
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ACTIVE_IN : IN STD_LOGIC;
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PCM_DATA_LEFT_IN, PCM_DATA_RIGHT_IN : IN STD_LOGIC_VECTOR(15 downto 0);
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I2S_LEFT_RIGHT_CLOCK_OUT : OUT STD_LOGIC;
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I2S_CLOCK_OUT : OUT STD_LOGIC;
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I2S_DATA_INOUT : INOUT STD_LOGIC;
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I2S_PCM_DATA_ACCESS_OUT : OUT STD_LOGIC
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);
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end component;
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component Flash_Memory_Driver
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port (
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CLOCK_IN : IN STD_LOGIC;
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ACTIVE_IN : IN STD_LOGIC;
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FLASH_MEMORY_ADDRESS_IN : IN STD_LOGIC_VECTOR (21 downto 0);
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FLASH_MEMORY_DATA_OUT : OUT STD_LOGIC_VECTOR (7 downto 0);
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DATA_VALID : OUT STD_LOGIC;
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FLASH_MEMORY_nWE : OUT STD_LOGIC;
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FLASH_MEMORY_nOE : OUT STD_LOGIC;
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FLASH_MEMORY_nRESET : OUT STD_LOGIC;
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FLASH_MEMORY_nCE : OUT STD_LOGIC;
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FLASH_MEMORY_ADDRESS : OUT STD_LOGIC_VECTOR (21 downto 0);
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FLASH_MEMORY_DATA : INOUT STD_LOGIC_VECTOR (7 downto 0)
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);
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end component;
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component ADPCM_Decoder_1_Bit
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port (
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CLOCK_IN : IN STD_LOGIC;
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ACTIVE_IN : IN STD_LOGIC;
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ADPCM_DATA_IN : IN STD_LOGIC;
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PCM_DATA_OUT : OUT STD_LOGIC_VECTOR(15 downto 0)
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);
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end component;
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signal Seven_Segment_Digit1 : integer range 0 to 15;
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signal Seven_Segment_Digit2 : integer range 0 to 15;
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signal Seven_Segment_Digit3 : integer range 0 to 15;
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signal Seven_Segment_Digit4 : integer range 0 to 15;
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signal Red_LEDs_Bar : integer range 0 to 10;
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constant CLOCK_FREQ : integer := 24000000;
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constant DIVISION_FREQ : integer := 8;
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constant COUNTER_MAX : integer := CLOCK_FREQ/DIVISION_FREQ-1;
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--Clock Divider
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signal Counter : unsigned(24 downto 0);
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signal Audio_Codec_Counter : unsigned(3 downto 0);
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signal PCM_Left_Data : STD_LOGIC_VECTOR(7 downto 0);
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signal I2C_ACTIVE_IN : STD_LOGIC := '0';
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signal I2S_CORE_CLOCK : STD_LOGIC := '0';
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signal I2C_SLAVE_ADDRESS : STD_LOGIC_VECTOR(7 downto 0) := x"34";
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signal I2C_REGISTER_ADDRESS : STD_LOGIC_VECTOR(7 downto 0) := x"12";
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signal I2C_REGISTER_DATA : STD_LOGIC_VECTOR(7 downto 0) := x"01";
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signal AUDIO_CODEC_VOLUME : unsigned(6 downto 0) := "1110000";
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type Stream is array(0 to 7) of STD_LOGIC_VECTOR(7 downto 0);
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signal I2C_Data_Stream : Stream := ( x"1A",--Line In
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x"7B",--Line Out
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x"F8",--Analog Path
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x"06",--Digital Path
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x"00",--Power Down
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x"21",--Digital Format
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x"01",--Sampling Control
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x"01" --Active Control
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);
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signal I2C_Register_Address_Stream : Stream := ( x"01",
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x"05",
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x"08",
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x"0A",
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x"0C",
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x"0E",
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x"10",
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x"12"
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);
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signal I2S_ACTIVE_IN : STD_LOGIC := '0';
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signal I2S_PCM_DATA_LEFT : STD_LOGIC_VECTOR(15 downto 0) := x"0000";
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signal I2S_PCM_DATA_RIGHT : STD_LOGIC_VECTOR(15 downto 0) := x"0000";
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signal I2S_PCM_DATA_ACCESS : STD_LOGIC;
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signal FLASH_MEMORY_ACTIVE : STD_LOGIC := '1';
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signal FLASH_MEMORY_ADDRESS : STD_LOGIC_VECTOR(21 downto 0);
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signal FLASH_MEMORY_ADDRESS_22 : unsigned(21 downto 0) := "0000000000000000000000";
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signal FLASH_MEMORY_DATA : STD_LOGIC_VECTOR(7 downto 0);
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signal FLASH_MEMORY_DATA_VALID : STD_LOGIC;
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signal ADPCM_DECODER_ACTIVE : STD_LOGIC := '0';
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signal ADPCM_DECODER_PCM_DATA_LEFT : STD_LOGIC_VECTOR(15 downto 0);
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signal ADPCM_DECODER_PCM_DATA_RIGHT: STD_LOGIC_VECTOR(15 downto 0);
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signal ADPCM_DECODER_DATA_LEFT : STD_LOGIC;
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signal ADPCM_DECODER_DATA_RIGHT : STD_LOGIC;
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begin
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u0: SevenSegments_Driver port map ( Seven_Segment_Digit1, Seven_Segment_Digit2, Seven_Segment_Digit3, Seven_Segment_Digit4, S_SEVEN_SEGMENT_1_OUT, S_SEVEN_SEGMENT_2_OUT, S_SEVEN_SEGMENT_3_OUT, S_SEVEN_SEGMENT_4_OUT);
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u1: LEDs_Bar_Driver port map ( Red_LEDs_Bar, S_RED_LEDS_OUT);
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u2: I2C_Driver port map ( CLOCK_IN, I2C_ACTIVE_IN, I2C_SLAVE_ADDRESS, I2C_REGISTER_ADDRESS, I2C_REGISTER_DATA, I2C_CLOCK_OUT, I2C_DATA_INOUT);
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u3: I2S_Driver port map ( CLOCK_IN, I2S_ACTIVE_IN, I2S_PCM_DATA_LEFT, I2S_PCM_DATA_RIGHT, I2S_LEFT_RIGHT_CLOCK_OUT, I2S_CLOCK_OUT, I2S_DATA_INOUT, I2S_PCM_DATA_ACCESS);
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u4: Flash_Memory_Driver port map ( CLOCK_IN, FLASH_MEMORY_ACTIVE, FLASH_MEMORY_ADDRESS, FLASH_MEMORY_DATA, FLASH_MEMORY_DATA_VALID, FLASH_MEMORY_nWE_OUT, FLASH_MEMORY_nOE_OUT, FLASH_MEMORY_nRESET_OUT, FLASH_MEMORY_nCE_OUT, FLASH_MEMORY_ADDRESS_OUT, FLASH_MEMORY_DATA_INOUT);
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u5: ADPCM_Decoder_1_Bit port map ( CLOCK_IN, ADPCM_DECODER_ACTIVE, ADPCM_DECODER_DATA_LEFT, ADPCM_DECODER_PCM_DATA_LEFT);
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u6: ADPCM_Decoder_1_Bit port map ( CLOCK_IN, ADPCM_DECODER_ACTIVE, ADPCM_DECODER_DATA_RIGHT, ADPCM_DECODER_PCM_DATA_RIGHT);
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FLASH_MEMORY_ADDRESS(0) <= FLASH_MEMORY_ADDRESS_22(0);
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FLASH_MEMORY_ADDRESS(1) <= FLASH_MEMORY_ADDRESS_22(1);
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FLASH_MEMORY_ADDRESS(2) <= FLASH_MEMORY_ADDRESS_22(2);
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FLASH_MEMORY_ADDRESS(3) <= FLASH_MEMORY_ADDRESS_22(3);
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FLASH_MEMORY_ADDRESS(4) <= FLASH_MEMORY_ADDRESS_22(4);
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FLASH_MEMORY_ADDRESS(5) <= FLASH_MEMORY_ADDRESS_22(5);
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FLASH_MEMORY_ADDRESS(6) <= FLASH_MEMORY_ADDRESS_22(6);
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FLASH_MEMORY_ADDRESS(7) <= FLASH_MEMORY_ADDRESS_22(7);
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FLASH_MEMORY_ADDRESS(8) <= FLASH_MEMORY_ADDRESS_22(8);
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FLASH_MEMORY_ADDRESS(9) <= FLASH_MEMORY_ADDRESS_22(9);
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FLASH_MEMORY_ADDRESS(10) <= FLASH_MEMORY_ADDRESS_22(10);
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FLASH_MEMORY_ADDRESS(11) <= FLASH_MEMORY_ADDRESS_22(11);
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FLASH_MEMORY_ADDRESS(12) <= FLASH_MEMORY_ADDRESS_22(12);
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FLASH_MEMORY_ADDRESS(13) <= FLASH_MEMORY_ADDRESS_22(13);
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FLASH_MEMORY_ADDRESS(14) <= FLASH_MEMORY_ADDRESS_22(14);
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FLASH_MEMORY_ADDRESS(15) <= FLASH_MEMORY_ADDRESS_22(15);
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FLASH_MEMORY_ADDRESS(16) <= FLASH_MEMORY_ADDRESS_22(16);
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FLASH_MEMORY_ADDRESS(17) <= FLASH_MEMORY_ADDRESS_22(17);
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FLASH_MEMORY_ADDRESS(18) <= FLASH_MEMORY_ADDRESS_22(18);
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FLASH_MEMORY_ADDRESS(19) <= FLASH_MEMORY_ADDRESS_22(19);
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FLASH_MEMORY_ADDRESS(20) <= FLASH_MEMORY_ADDRESS_22(20);
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FLASH_MEMORY_ADDRESS(21) <= FLASH_MEMORY_ADDRESS_22(21);
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I2C_Data_Stream(1)(0) <= AUDIO_CODEC_VOLUME(0);
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I2C_Data_Stream(1)(1) <= AUDIO_CODEC_VOLUME(1);
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I2C_Data_Stream(1)(2) <= AUDIO_CODEC_VOLUME(2);
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I2C_Data_Stream(1)(3) <= AUDIO_CODEC_VOLUME(3);
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I2C_Data_Stream(1)(4) <= AUDIO_CODEC_VOLUME(4);
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I2C_Data_Stream(1)(5) <= AUDIO_CODEC_VOLUME(5);
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I2C_Data_Stream(1)(6) <= AUDIO_CODEC_VOLUME(6);
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I2S_CORE_CLOCK_OUT <= I2S_CORE_CLOCK;
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PCM_Left_Data(7) <= ADPCM_DECODER_PCM_DATA_LEFT(15);
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PCM_Left_Data(6) <= ADPCM_DECODER_PCM_DATA_LEFT(14);
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PCM_Left_Data(5) <= ADPCM_DECODER_PCM_DATA_LEFT(13);
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PCM_Left_Data(4) <= ADPCM_DECODER_PCM_DATA_LEFT(12);
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PCM_Left_Data(3) <= ADPCM_DECODER_PCM_DATA_LEFT(11);
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PCM_Left_Data(2) <= ADPCM_DECODER_PCM_DATA_LEFT(10);
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PCM_Left_Data(1) <= ADPCM_DECODER_PCM_DATA_LEFT(9);
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PCM_Left_Data(0) <= ADPCM_DECODER_PCM_DATA_LEFT(8);
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I2S_PCM_DATA_LEFT <= ADPCM_DECODER_PCM_DATA_LEFT;
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I2S_PCM_DATA_RIGHT <= ADPCM_DECODER_PCM_DATA_RIGHT;
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process(CLOCK_IN, I2S_PCM_DATA_ACCESS)
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variable I2C_Stream_Counter : integer range 0 to 7;
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variable ADPCM_Bit_Counter : integer range 0 to 7 := 6;
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begin
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if rising_edge(I2S_PCM_DATA_ACCESS) then
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ADPCM_DECODER_DATA_LEFT <= FLASH_MEMORY_DATA(ADPCM_Bit_Counter+1);
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ADPCM_DECODER_DATA_RIGHT <= FLASH_MEMORY_DATA(ADPCM_Bit_Counter);
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ADPCM_DECODER_ACTIVE <= not ADPCM_DECODER_ACTIVE;
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if ADPCM_Bit_Counter = 0 then
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ADPCM_Bit_Counter := 6;
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FLASH_MEMORY_ADDRESS_22 <= FLASH_MEMORY_ADDRESS_22 + 1;
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else
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ADPCM_Bit_Counter := ADPCM_Bit_Counter - 2;
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end if;
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if PCM_Left_Data > "11111000" then
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Red_LEDs_Bar <= 10;
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elsif PCM_Left_Data > "11110000" then
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Red_LEDs_Bar <= 9;
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elsif PCM_Left_Data > "11100000" then
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Red_LEDs_Bar <= 8;
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elsif PCM_Left_Data > "11000000" then
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Red_LEDs_Bar <= 7;
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elsif PCM_Left_Data > "10111000" then
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Red_LEDs_Bar <= 6;
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elsif PCM_Left_Data > "10110000" then
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Red_LEDs_Bar <= 5;
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elsif PCM_Left_Data > "10100000" then
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Red_LEDs_Bar <= 4;
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elsif PCM_Left_Data > "10011100" then
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Red_LEDs_Bar <= 3;
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elsif PCM_Left_Data > "10011000" then
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Red_LEDs_Bar <= 2;
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elsif PCM_Left_Data > "10001000" then
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Red_LEDs_Bar <= 1;
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else
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Red_LEDs_Bar <= 0;
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end if;
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end if;
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if rising_edge(CLOCK_IN) then
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if Counter = COUNTER_MAX then
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Counter <= (others => '0');
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if KEY_0 = '0' then
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if AUDIO_CODEC_VOLUME = "1111111" then
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else
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AUDIO_CODEC_VOLUME <= AUDIO_CODEC_VOLUME + 1;
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end if;
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elsif KEY_1 = '0' then
|
288 |
|
|
if AUDIO_CODEC_VOLUME = "000000" then
|
289 |
|
|
else
|
290 |
|
|
AUDIO_CODEC_VOLUME <= AUDIO_CODEC_VOLUME - 1;
|
291 |
|
|
end if;
|
292 |
|
|
end if;
|
293 |
|
|
|
294 |
|
|
I2C_REGISTER_ADDRESS <= I2C_Register_Address_Stream(I2C_Stream_Counter);
|
295 |
|
|
I2C_REGISTER_DATA <= I2C_Data_Stream(I2C_Stream_Counter);
|
296 |
|
|
if I2C_ACTIVE_IN = '0' then
|
297 |
|
|
I2C_ACTIVE_IN <= '1';
|
298 |
|
|
else
|
299 |
|
|
I2C_ACTIVE_IN <= '0';
|
300 |
|
|
if I2C_Stream_Counter = 7 then
|
301 |
|
|
I2C_Stream_Counter := 0;
|
302 |
|
|
I2S_ACTIVE_IN <= '1';
|
303 |
|
|
else
|
304 |
|
|
I2C_Stream_Counter := I2C_Stream_Counter + 1;
|
305 |
|
|
end if;
|
306 |
|
|
end if;
|
307 |
|
|
|
308 |
|
|
else
|
309 |
|
|
Counter <= Counter + 1;
|
310 |
|
|
end if;
|
311 |
|
|
I2S_CORE_CLOCK <= not I2S_CORE_CLOCK;
|
312 |
|
|
end if;
|
313 |
|
|
|
314 |
|
|
|
315 |
|
|
end process;
|
316 |
|
|
|
317 |
|
|
end HD_ADPCM_Codec_Function;
|
318 |
|
|
|
319 |
|
|
|
320 |
|
|
------------------------7Segments Driver------------------------------
|
321 |
|
|
library ieee;
|
322 |
|
|
use ieee.std_logic_1164.all;
|
323 |
|
|
use ieee.numeric_std.all;
|
324 |
|
|
|
325 |
|
|
entity SevenSegments_Driver is
|
326 |
|
|
port (
|
327 |
|
|
DIGIT_1_IN, DIGIT_2_IN, DIGIT_3_IN, DIGIT_4_IN : in integer range 0 to 15;
|
328 |
|
|
SEVEN_SEGMENT_1_OUT, SEVEN_SEGMENT_2_OUT, SEVEN_SEGMENT_3_OUT, SEVEN_SEGMENT_4_OUT : out STD_LOGIC_VECTOR (6 downto 0)
|
329 |
|
|
);
|
330 |
|
|
end SevenSegments_Driver;
|
331 |
|
|
|
332 |
|
|
|
333 |
|
|
architecture HD_ADPCM_Codec_Function of SevenSegments_Driver is
|
334 |
|
|
type Stream is array(0 to 15) of STD_LOGIC_VECTOR(7 downto 0);
|
335 |
|
|
constant Seven_Segment_Data_Stream : Stream := ( x"40",
|
336 |
|
|
x"F9",
|
337 |
|
|
x"A4",
|
338 |
|
|
x"B0",
|
339 |
|
|
x"99",
|
340 |
|
|
x"92",
|
341 |
|
|
x"02",
|
342 |
|
|
x"F8",
|
343 |
|
|
x"00",
|
344 |
|
|
x"10",
|
345 |
|
|
x"08",
|
346 |
|
|
x"03",
|
347 |
|
|
x"46",
|
348 |
|
|
x"21",
|
349 |
|
|
x"06",
|
350 |
|
|
x"0E");
|
351 |
|
|
begin
|
352 |
|
|
SEVEN_SEGMENT_1_OUT(0) <= Seven_Segment_Data_Stream(DIGIT_1_IN)(0);
|
353 |
|
|
SEVEN_SEGMENT_1_OUT(1) <= Seven_Segment_Data_Stream(DIGIT_1_IN)(1);
|
354 |
|
|
SEVEN_SEGMENT_1_OUT(2) <= Seven_Segment_Data_Stream(DIGIT_1_IN)(2);
|
355 |
|
|
SEVEN_SEGMENT_1_OUT(3) <= Seven_Segment_Data_Stream(DIGIT_1_IN)(3);
|
356 |
|
|
SEVEN_SEGMENT_1_OUT(4) <= Seven_Segment_Data_Stream(DIGIT_1_IN)(4);
|
357 |
|
|
SEVEN_SEGMENT_1_OUT(5) <= Seven_Segment_Data_Stream(DIGIT_1_IN)(5);
|
358 |
|
|
SEVEN_SEGMENT_1_OUT(6) <= Seven_Segment_Data_Stream(DIGIT_1_IN)(6);
|
359 |
|
|
|
360 |
|
|
SEVEN_SEGMENT_2_OUT(0) <= Seven_Segment_Data_Stream(DIGIT_2_IN)(0);
|
361 |
|
|
SEVEN_SEGMENT_2_OUT(1) <= Seven_Segment_Data_Stream(DIGIT_2_IN)(1);
|
362 |
|
|
SEVEN_SEGMENT_2_OUT(2) <= Seven_Segment_Data_Stream(DIGIT_2_IN)(2);
|
363 |
|
|
SEVEN_SEGMENT_2_OUT(3) <= Seven_Segment_Data_Stream(DIGIT_2_IN)(3);
|
364 |
|
|
SEVEN_SEGMENT_2_OUT(4) <= Seven_Segment_Data_Stream(DIGIT_2_IN)(4);
|
365 |
|
|
SEVEN_SEGMENT_2_OUT(5) <= Seven_Segment_Data_Stream(DIGIT_2_IN)(5);
|
366 |
|
|
SEVEN_SEGMENT_2_OUT(6) <= Seven_Segment_Data_Stream(DIGIT_2_IN)(6);
|
367 |
|
|
|
368 |
|
|
SEVEN_SEGMENT_3_OUT(0) <= Seven_Segment_Data_Stream(DIGIT_3_IN)(0);
|
369 |
|
|
SEVEN_SEGMENT_3_OUT(1) <= Seven_Segment_Data_Stream(DIGIT_3_IN)(1);
|
370 |
|
|
SEVEN_SEGMENT_3_OUT(2) <= Seven_Segment_Data_Stream(DIGIT_3_IN)(2);
|
371 |
|
|
SEVEN_SEGMENT_3_OUT(3) <= Seven_Segment_Data_Stream(DIGIT_3_IN)(3);
|
372 |
|
|
SEVEN_SEGMENT_3_OUT(4) <= Seven_Segment_Data_Stream(DIGIT_3_IN)(4);
|
373 |
|
|
SEVEN_SEGMENT_3_OUT(5) <= Seven_Segment_Data_Stream(DIGIT_3_IN)(5);
|
374 |
|
|
SEVEN_SEGMENT_3_OUT(6) <= Seven_Segment_Data_Stream(DIGIT_3_IN)(6);
|
375 |
|
|
|
376 |
|
|
SEVEN_SEGMENT_4_OUT(0) <= Seven_Segment_Data_Stream(DIGIT_4_IN)(0);
|
377 |
|
|
SEVEN_SEGMENT_4_OUT(1) <= Seven_Segment_Data_Stream(DIGIT_4_IN)(1);
|
378 |
|
|
SEVEN_SEGMENT_4_OUT(2) <= Seven_Segment_Data_Stream(DIGIT_4_IN)(2);
|
379 |
|
|
SEVEN_SEGMENT_4_OUT(3) <= Seven_Segment_Data_Stream(DIGIT_4_IN)(3);
|
380 |
|
|
SEVEN_SEGMENT_4_OUT(4) <= Seven_Segment_Data_Stream(DIGIT_4_IN)(4);
|
381 |
|
|
SEVEN_SEGMENT_4_OUT(5) <= Seven_Segment_Data_Stream(DIGIT_4_IN)(5);
|
382 |
|
|
SEVEN_SEGMENT_4_OUT(6) <= Seven_Segment_Data_Stream(DIGIT_4_IN)(6);
|
383 |
|
|
|
384 |
|
|
end HD_ADPCM_Codec_Function;
|
385 |
|
|
------------------------7Segments Driver------------------------------
|
386 |
|
|
|
387 |
|
|
|
388 |
|
|
|
389 |
|
|
|
390 |
|
|
------------------------LEDs Bar Driver------------------------------
|
391 |
|
|
library ieee;
|
392 |
|
|
use ieee.std_logic_1164.all;
|
393 |
|
|
use ieee.numeric_std.all;
|
394 |
|
|
|
395 |
|
|
entity LEDs_Bar_Driver is
|
396 |
|
|
port (
|
397 |
|
|
SAMPLE_VALUE : IN INTEGER RANGE 0 to 10;
|
398 |
|
|
LEDS_OUT : OUT STD_LOGIC_VECTOR (9 downto 0)
|
399 |
|
|
);
|
400 |
|
|
end LEDs_Bar_Driver;
|
401 |
|
|
|
402 |
|
|
|
403 |
|
|
architecture HD_ADPCM_Codec_Function of LEDs_Bar_Driver is
|
404 |
|
|
type Stream is array(0 to 10) of STD_LOGIC_VECTOR(9 downto 0);
|
405 |
|
|
constant LEDs_Data_Stream : Stream := (
|
406 |
|
|
"0000000000",
|
407 |
|
|
"0000000001",
|
408 |
|
|
"0000000011",
|
409 |
|
|
"0000000111",
|
410 |
|
|
"0000001111",
|
411 |
|
|
"0000011111",
|
412 |
|
|
"0000111111",
|
413 |
|
|
"0001111111",
|
414 |
|
|
"0011111111",
|
415 |
|
|
"0111111111",
|
416 |
|
|
"1111111111");
|
417 |
|
|
begin
|
418 |
|
|
LEDS_OUT(0) <= LEDs_Data_Stream(SAMPLE_VALUE)(0);
|
419 |
|
|
LEDS_OUT(1) <= LEDs_Data_Stream(SAMPLE_VALUE)(1);
|
420 |
|
|
LEDS_OUT(2) <= LEDs_Data_Stream(SAMPLE_VALUE)(2);
|
421 |
|
|
LEDS_OUT(3) <= LEDs_Data_Stream(SAMPLE_VALUE)(3);
|
422 |
|
|
LEDS_OUT(4) <= LEDs_Data_Stream(SAMPLE_VALUE)(4);
|
423 |
|
|
LEDS_OUT(5) <= LEDs_Data_Stream(SAMPLE_VALUE)(5);
|
424 |
|
|
LEDS_OUT(6) <= LEDs_Data_Stream(SAMPLE_VALUE)(6);
|
425 |
|
|
LEDS_OUT(7) <= LEDs_Data_Stream(SAMPLE_VALUE)(7);
|
426 |
|
|
LEDS_OUT(8) <= LEDs_Data_Stream(SAMPLE_VALUE)(8);
|
427 |
|
|
LEDS_OUT(9) <= LEDs_Data_Stream(SAMPLE_VALUE)(9);
|
428 |
|
|
|
429 |
|
|
end HD_ADPCM_Codec_Function;
|
430 |
|
|
------------------------7Segments Driver------------------------------
|
431 |
|
|
|
432 |
|
|
|
433 |
|
|
|
434 |
|
|
------------------------I2C Driver------------------------------
|
435 |
|
|
library ieee;
|
436 |
|
|
use ieee.std_logic_1164.all;
|
437 |
|
|
use ieee.numeric_std.all;
|
438 |
|
|
|
439 |
|
|
entity I2C_Driver is
|
440 |
|
|
port (
|
441 |
|
|
CLOCK_IN : IN STD_LOGIC;
|
442 |
|
|
ACTIVE_IN : IN STD_LOGIC;
|
443 |
|
|
SLAVE_ADDRESS, REGISTER_ADDRESS : IN STD_LOGIC_VECTOR(7 downto 0);
|
444 |
|
|
REGISTER_DATA : IN STD_LOGIC_VECTOR(7 downto 0);
|
445 |
|
|
I2C_CLOCK : OUT STD_LOGIC;
|
446 |
|
|
I2C_DATA : INOUT STD_LOGIC
|
447 |
|
|
);
|
448 |
|
|
end I2C_Driver;
|
449 |
|
|
|
450 |
|
|
|
451 |
|
|
architecture HD_ADPCM_Codec_Function of I2C_Driver is
|
452 |
|
|
|
453 |
|
|
type Stream is array(0 to 86) of STD_LOGIC;
|
454 |
|
|
constant CLOCK_FREQ : integer := 24000000;
|
455 |
|
|
constant DIVISION_FREQ : integer := 100000;--I2C Speed: 100Kbps
|
456 |
|
|
constant COUNTER_MAX : integer := CLOCK_FREQ/(DIVISION_FREQ*3)-1;
|
457 |
|
|
|
458 |
|
|
--Clock Divider
|
459 |
|
|
signal Counter : unsigned(24 downto 0);
|
460 |
|
|
signal I2C_Sent : unsigned(0 downto 0);
|
461 |
|
|
signal I2C_Data_Stream : Stream := (
|
462 |
|
|
'1',
|
463 |
|
|
'0',
|
464 |
|
|
'0',
|
465 |
|
|
SLAVE_ADDRESS(7),
|
466 |
|
|
SLAVE_ADDRESS(7),
|
467 |
|
|
SLAVE_ADDRESS(7),
|
468 |
|
|
SLAVE_ADDRESS(6),
|
469 |
|
|
SLAVE_ADDRESS(6),
|
470 |
|
|
SLAVE_ADDRESS(6),
|
471 |
|
|
SLAVE_ADDRESS(5),
|
472 |
|
|
SLAVE_ADDRESS(5),
|
473 |
|
|
SLAVE_ADDRESS(5),
|
474 |
|
|
SLAVE_ADDRESS(4),
|
475 |
|
|
SLAVE_ADDRESS(4),
|
476 |
|
|
SLAVE_ADDRESS(4),
|
477 |
|
|
SLAVE_ADDRESS(3),
|
478 |
|
|
SLAVE_ADDRESS(3),
|
479 |
|
|
SLAVE_ADDRESS(3),
|
480 |
|
|
SLAVE_ADDRESS(2),
|
481 |
|
|
SLAVE_ADDRESS(2),
|
482 |
|
|
SLAVE_ADDRESS(2),
|
483 |
|
|
SLAVE_ADDRESS(1),
|
484 |
|
|
SLAVE_ADDRESS(1),
|
485 |
|
|
SLAVE_ADDRESS(1),
|
486 |
|
|
SLAVE_ADDRESS(0),
|
487 |
|
|
SLAVE_ADDRESS(0),
|
488 |
|
|
SLAVE_ADDRESS(0),
|
489 |
|
|
'1',--Ack
|
490 |
|
|
'1',--Ack
|
491 |
|
|
'1',--Ack
|
492 |
|
|
REGISTER_ADDRESS(7),
|
493 |
|
|
REGISTER_ADDRESS(7),
|
494 |
|
|
REGISTER_ADDRESS(7),
|
495 |
|
|
REGISTER_ADDRESS(6),
|
496 |
|
|
REGISTER_ADDRESS(6),
|
497 |
|
|
REGISTER_ADDRESS(6),
|
498 |
|
|
REGISTER_ADDRESS(5),
|
499 |
|
|
REGISTER_ADDRESS(5),
|
500 |
|
|
REGISTER_ADDRESS(5),
|
501 |
|
|
REGISTER_ADDRESS(4),
|
502 |
|
|
REGISTER_ADDRESS(4),
|
503 |
|
|
REGISTER_ADDRESS(4),
|
504 |
|
|
REGISTER_ADDRESS(3),
|
505 |
|
|
REGISTER_ADDRESS(3),
|
506 |
|
|
REGISTER_ADDRESS(3),
|
507 |
|
|
REGISTER_ADDRESS(2),
|
508 |
|
|
REGISTER_ADDRESS(2),
|
509 |
|
|
REGISTER_ADDRESS(2),
|
510 |
|
|
REGISTER_ADDRESS(1),
|
511 |
|
|
REGISTER_ADDRESS(1),
|
512 |
|
|
REGISTER_ADDRESS(1),
|
513 |
|
|
REGISTER_ADDRESS(0),
|
514 |
|
|
REGISTER_ADDRESS(0),
|
515 |
|
|
REGISTER_ADDRESS(0),
|
516 |
|
|
'1',--Ack
|
517 |
|
|
'1',--Ack
|
518 |
|
|
'1',--Ack
|
519 |
|
|
REGISTER_DATA(7),
|
520 |
|
|
REGISTER_DATA(7),
|
521 |
|
|
REGISTER_DATA(7),
|
522 |
|
|
REGISTER_DATA(6),
|
523 |
|
|
REGISTER_DATA(6),
|
524 |
|
|
REGISTER_DATA(6),
|
525 |
|
|
REGISTER_DATA(5),
|
526 |
|
|
REGISTER_DATA(5),
|
527 |
|
|
REGISTER_DATA(5),
|
528 |
|
|
REGISTER_DATA(4),
|
529 |
|
|
REGISTER_DATA(4),
|
530 |
|
|
REGISTER_DATA(4),
|
531 |
|
|
REGISTER_DATA(3),
|
532 |
|
|
REGISTER_DATA(3),
|
533 |
|
|
REGISTER_DATA(3),
|
534 |
|
|
REGISTER_DATA(2),
|
535 |
|
|
REGISTER_DATA(2),
|
536 |
|
|
REGISTER_DATA(2),
|
537 |
|
|
REGISTER_DATA(1),
|
538 |
|
|
REGISTER_DATA(1),
|
539 |
|
|
REGISTER_DATA(1),
|
540 |
|
|
REGISTER_DATA(0),
|
541 |
|
|
REGISTER_DATA(0),
|
542 |
|
|
REGISTER_DATA(0),
|
543 |
|
|
'1',--Ack
|
544 |
|
|
'1',--Ack
|
545 |
|
|
'1',--Ack
|
546 |
|
|
'0',
|
547 |
|
|
'0',
|
548 |
|
|
'1');
|
549 |
|
|
|
550 |
|
|
constant I2C_Clock_Stream : Stream := (
|
551 |
|
|
'1',
|
552 |
|
|
'1',
|
553 |
|
|
'0',
|
554 |
|
|
'0',
|
555 |
|
|
'1',
|
556 |
|
|
'0',
|
557 |
|
|
'0',
|
558 |
|
|
'1',
|
559 |
|
|
'0',
|
560 |
|
|
'0',
|
561 |
|
|
'1',
|
562 |
|
|
'0',
|
563 |
|
|
'0',
|
564 |
|
|
'1',
|
565 |
|
|
'0',
|
566 |
|
|
'0',
|
567 |
|
|
'1',
|
568 |
|
|
'0',
|
569 |
|
|
'0',
|
570 |
|
|
'1',
|
571 |
|
|
'0',
|
572 |
|
|
'0',
|
573 |
|
|
'1',
|
574 |
|
|
'0',
|
575 |
|
|
'0',
|
576 |
|
|
'1',
|
577 |
|
|
'0',
|
578 |
|
|
'0',
|
579 |
|
|
'1',
|
580 |
|
|
'0',
|
581 |
|
|
'0',
|
582 |
|
|
'1',
|
583 |
|
|
'0',
|
584 |
|
|
'0',
|
585 |
|
|
'1',
|
586 |
|
|
'0',
|
587 |
|
|
'0',
|
588 |
|
|
'1',
|
589 |
|
|
'0',
|
590 |
|
|
'0',
|
591 |
|
|
'1',
|
592 |
|
|
'0',
|
593 |
|
|
'0',
|
594 |
|
|
'1',
|
595 |
|
|
'0',
|
596 |
|
|
'0',
|
597 |
|
|
'1',
|
598 |
|
|
'0',
|
599 |
|
|
'0',
|
600 |
|
|
'1',
|
601 |
|
|
'0',
|
602 |
|
|
'0',
|
603 |
|
|
'1',
|
604 |
|
|
'0',
|
605 |
|
|
'0',
|
606 |
|
|
'1',
|
607 |
|
|
'0',
|
608 |
|
|
'0',
|
609 |
|
|
'1',
|
610 |
|
|
'0',
|
611 |
|
|
'0',
|
612 |
|
|
'1',
|
613 |
|
|
'0',
|
614 |
|
|
'0',
|
615 |
|
|
'1',
|
616 |
|
|
'0',
|
617 |
|
|
'0',
|
618 |
|
|
'1',
|
619 |
|
|
'0',
|
620 |
|
|
'0',
|
621 |
|
|
'1',
|
622 |
|
|
'0',
|
623 |
|
|
'0',
|
624 |
|
|
'1',
|
625 |
|
|
'0',
|
626 |
|
|
'0',
|
627 |
|
|
'1',
|
628 |
|
|
'0',
|
629 |
|
|
'0',
|
630 |
|
|
'1',
|
631 |
|
|
'0',
|
632 |
|
|
'0',
|
633 |
|
|
'1',
|
634 |
|
|
'0',
|
635 |
|
|
'0',
|
636 |
|
|
'1',
|
637 |
|
|
'1'
|
638 |
|
|
);
|
639 |
|
|
|
640 |
|
|
begin
|
641 |
|
|
|
642 |
|
|
process(CLOCK_IN, ACTIVE_IN)
|
643 |
|
|
variable I2C_Stream_Counter : integer range 0 to 86;
|
644 |
|
|
begin
|
645 |
|
|
if rising_edge(CLOCK_IN) then
|
646 |
|
|
|
647 |
|
|
I2C_CLOCK <= I2C_Clock_Stream(I2C_Stream_Counter);
|
648 |
|
|
I2C_DATA <= I2C_Data_Stream(I2C_Stream_Counter);
|
649 |
|
|
|
650 |
|
|
if Counter = COUNTER_MAX then
|
651 |
|
|
Counter <= (others => '0');
|
652 |
|
|
|
653 |
|
|
if ACTIVE_IN = '1' then
|
654 |
|
|
if I2C_Stream_Counter = 86 then
|
655 |
|
|
--I2C_Stream_Counter := 0;
|
656 |
|
|
else
|
657 |
|
|
I2C_Stream_Counter := I2C_Stream_Counter + 1;
|
658 |
|
|
end if;
|
659 |
|
|
else
|
660 |
|
|
I2C_Stream_Counter := 0;
|
661 |
|
|
end if;
|
662 |
|
|
else
|
663 |
|
|
Counter <= Counter + 1;
|
664 |
|
|
end if;
|
665 |
|
|
end if;
|
666 |
|
|
end process;
|
667 |
|
|
|
668 |
|
|
|
669 |
|
|
|
670 |
|
|
|
671 |
|
|
|
672 |
|
|
end HD_ADPCM_Codec_Function;
|
673 |
|
|
------------------------I2C Driver------------------------------
|
674 |
|
|
|
675 |
|
|
|
676 |
|
|
|
677 |
|
|
------------------------I2S Driver------------------------------
|
678 |
|
|
library ieee;
|
679 |
|
|
use ieee.std_logic_1164.all;
|
680 |
|
|
use ieee.numeric_std.all;
|
681 |
|
|
|
682 |
|
|
entity I2S_Driver is
|
683 |
|
|
port (
|
684 |
|
|
CLOCK_IN : IN STD_LOGIC;
|
685 |
|
|
ACTIVE_IN : IN STD_LOGIC;
|
686 |
|
|
PCM_DATA_LEFT_IN, PCM_DATA_RIGHT_IN : IN STD_LOGIC_VECTOR(15 downto 0);
|
687 |
|
|
I2S_LEFT_RIGHT_CLOCK_OUT : OUT STD_LOGIC;
|
688 |
|
|
I2S_CLOCK_OUT : OUT STD_LOGIC;
|
689 |
|
|
I2S_DATA_INOUT : INOUT STD_LOGIC;
|
690 |
|
|
I2S_PCM_DATA_ACCESS_OUT : OUT STD_LOGIC
|
691 |
|
|
);
|
692 |
|
|
end I2S_Driver;
|
693 |
|
|
|
694 |
|
|
|
695 |
|
|
architecture HD_ADPCM_Codec_Function of I2S_Driver is
|
696 |
|
|
|
697 |
|
|
type Stream is array(0 to 37) of STD_LOGIC;
|
698 |
|
|
constant CLOCK_FREQ : integer := 24000000;
|
699 |
|
|
--constant DIVISION_FREQ : integer := 1824000;--I2S Speed: 48000Hz 48Khz * 38 I2S Bits
|
700 |
|
|
--constant COUNTER_MAX : integer := CLOCK_FREQ/(DIVISION_FREQ*2)-1;
|
701 |
|
|
constant COUNTER_MAX : integer := 7;
|
702 |
|
|
|
703 |
|
|
|
704 |
|
|
--Clock Divider
|
705 |
|
|
signal Counter : unsigned(24 downto 0);
|
706 |
|
|
signal Active_Module : unsigned(0 downto 0);
|
707 |
|
|
signal I2S_Clock : STD_LOGIC := '0';
|
708 |
|
|
signal I2S_Data_Stream : Stream := ( '0',
|
709 |
|
|
PCM_DATA_LEFT_IN(15),
|
710 |
|
|
PCM_DATA_LEFT_IN(14),
|
711 |
|
|
PCM_DATA_LEFT_IN(13),
|
712 |
|
|
PCM_DATA_LEFT_IN(12),
|
713 |
|
|
PCM_DATA_LEFT_IN(11),
|
714 |
|
|
PCM_DATA_LEFT_IN(10),
|
715 |
|
|
PCM_DATA_LEFT_IN(9),
|
716 |
|
|
PCM_DATA_LEFT_IN(8),
|
717 |
|
|
PCM_DATA_LEFT_IN(7),
|
718 |
|
|
PCM_DATA_LEFT_IN(6),
|
719 |
|
|
PCM_DATA_LEFT_IN(5),
|
720 |
|
|
PCM_DATA_LEFT_IN(4),
|
721 |
|
|
PCM_DATA_LEFT_IN(3),
|
722 |
|
|
PCM_DATA_LEFT_IN(2),
|
723 |
|
|
PCM_DATA_LEFT_IN(1),
|
724 |
|
|
PCM_DATA_LEFT_IN(0),
|
725 |
|
|
'0',
|
726 |
|
|
'0',
|
727 |
|
|
'0',
|
728 |
|
|
PCM_DATA_RIGHT_IN(15),
|
729 |
|
|
PCM_DATA_RIGHT_IN(14),
|
730 |
|
|
PCM_DATA_RIGHT_IN(13),
|
731 |
|
|
PCM_DATA_RIGHT_IN(12),
|
732 |
|
|
PCM_DATA_RIGHT_IN(11),
|
733 |
|
|
PCM_DATA_RIGHT_IN(10),
|
734 |
|
|
PCM_DATA_RIGHT_IN(9),
|
735 |
|
|
PCM_DATA_RIGHT_IN(8),
|
736 |
|
|
PCM_DATA_RIGHT_IN(7),
|
737 |
|
|
PCM_DATA_RIGHT_IN(6),
|
738 |
|
|
PCM_DATA_RIGHT_IN(5),
|
739 |
|
|
PCM_DATA_RIGHT_IN(4),
|
740 |
|
|
PCM_DATA_RIGHT_IN(3),
|
741 |
|
|
PCM_DATA_RIGHT_IN(2),
|
742 |
|
|
PCM_DATA_RIGHT_IN(1),
|
743 |
|
|
PCM_DATA_RIGHT_IN(0),
|
744 |
|
|
'0',
|
745 |
|
|
'0');
|
746 |
|
|
|
747 |
|
|
|
748 |
|
|
begin
|
749 |
|
|
|
750 |
|
|
I2S_CLOCK_OUT <= I2S_Clock;
|
751 |
|
|
|
752 |
|
|
process(CLOCK_IN, ACTIVE_IN)
|
753 |
|
|
begin
|
754 |
|
|
if rising_edge(CLOCK_IN) then
|
755 |
|
|
if Counter = COUNTER_MAX then
|
756 |
|
|
Counter <= (others => '0');
|
757 |
|
|
|
758 |
|
|
if Active_Module = "1" then
|
759 |
|
|
I2S_Clock <= not I2S_Clock;
|
760 |
|
|
end if;
|
761 |
|
|
|
762 |
|
|
else
|
763 |
|
|
Counter <= Counter + 1;
|
764 |
|
|
end if;
|
765 |
|
|
end if;
|
766 |
|
|
if rising_edge(ACTIVE_IN) then
|
767 |
|
|
Active_Module <= "1";
|
768 |
|
|
end if;
|
769 |
|
|
if ACTIVE_IN = '0' then
|
770 |
|
|
Active_Module <= "0";
|
771 |
|
|
end if;
|
772 |
|
|
end process;
|
773 |
|
|
|
774 |
|
|
process(I2S_Clock)
|
775 |
|
|
variable I2S_Stream_Counter : integer range 0 to 37;
|
776 |
|
|
begin
|
777 |
|
|
if falling_edge(I2S_Clock) then
|
778 |
|
|
|
779 |
|
|
I2S_DATA_INOUT <= I2S_Data_Stream(I2S_Stream_Counter);
|
780 |
|
|
|
781 |
|
|
if I2S_Stream_Counter = 0 then
|
782 |
|
|
I2S_LEFT_RIGHT_CLOCK_OUT <= '0';
|
783 |
|
|
elsif I2S_Stream_Counter = 19 then
|
784 |
|
|
I2S_LEFT_RIGHT_CLOCK_OUT <= '1';
|
785 |
|
|
end if;
|
786 |
|
|
|
787 |
|
|
if I2S_Stream_Counter = 37 then
|
788 |
|
|
I2S_Stream_Counter := 0;
|
789 |
|
|
I2S_PCM_DATA_ACCESS_OUT <= '1';
|
790 |
|
|
else
|
791 |
|
|
I2S_PCM_DATA_ACCESS_OUT <= '0';
|
792 |
|
|
I2S_Stream_Counter := I2S_Stream_Counter + 1;
|
793 |
|
|
end if;
|
794 |
|
|
end if;
|
795 |
|
|
end process;
|
796 |
|
|
|
797 |
|
|
end HD_ADPCM_Codec_Function;
|
798 |
|
|
------------------------I2S Driver------------------------------
|
799 |
|
|
|
800 |
|
|
|
801 |
|
|
|
802 |
|
|
|
803 |
|
|
------------------------Flash Memory Driver------------------------------
|
804 |
|
|
library ieee;
|
805 |
|
|
use ieee.std_logic_1164.all;
|
806 |
|
|
use ieee.numeric_std.all;
|
807 |
|
|
|
808 |
|
|
entity Flash_Memory_Driver is
|
809 |
|
|
port (
|
810 |
|
|
CLOCK_IN : IN STD_LOGIC;
|
811 |
|
|
ACTIVE_IN : IN STD_LOGIC;
|
812 |
|
|
FLASH_MEMORY_ADDRESS_IN : IN STD_LOGIC_VECTOR (21 downto 0);
|
813 |
|
|
FLASH_MEMORY_DATA_OUT : OUT STD_LOGIC_VECTOR (7 downto 0);
|
814 |
|
|
DATA_VALID : OUT STD_LOGIC;
|
815 |
|
|
FLASH_MEMORY_nWE : OUT STD_LOGIC;
|
816 |
|
|
FLASH_MEMORY_nOE : OUT STD_LOGIC;
|
817 |
|
|
FLASH_MEMORY_nRESET : OUT STD_LOGIC;
|
818 |
|
|
FLASH_MEMORY_nCE : OUT STD_LOGIC;
|
819 |
|
|
FLASH_MEMORY_ADDRESS : OUT STD_LOGIC_VECTOR (21 downto 0);
|
820 |
|
|
FLASH_MEMORY_DATA : INOUT STD_LOGIC_VECTOR (7 downto 0)
|
821 |
|
|
);
|
822 |
|
|
end Flash_Memory_Driver;
|
823 |
|
|
|
824 |
|
|
|
825 |
|
|
architecture HD_ADPCM_Codec_Function of Flash_Memory_Driver is
|
826 |
|
|
constant CLOCK_FREQ : integer := 24000000;
|
827 |
|
|
constant DIVISION_FREQ : integer := 2000000;--Flash Memory Speed Clock.
|
828 |
|
|
constant COUNTER_MAX : integer := CLOCK_FREQ/(DIVISION_FREQ*2)-1;
|
829 |
|
|
|
830 |
|
|
--Clock Divider
|
831 |
|
|
signal Counter : unsigned(24 downto 0);
|
832 |
|
|
signal Flash_Memory_Clock : STD_LOGIC := '0';
|
833 |
|
|
signal Flash_Memory_Data_Valid : STD_LOGIC := '0';
|
834 |
|
|
begin
|
835 |
|
|
|
836 |
|
|
DATA_VALID <= Flash_Memory_Data_Valid;
|
837 |
|
|
process(CLOCK_IN)
|
838 |
|
|
begin
|
839 |
|
|
if rising_edge(CLOCK_IN) then
|
840 |
|
|
if Counter = COUNTER_MAX then
|
841 |
|
|
Counter <= (others => '0');
|
842 |
|
|
|
843 |
|
|
if ACTIVE_IN = '1' then
|
844 |
|
|
Flash_Memory_Clock <= not Flash_Memory_Clock;
|
845 |
|
|
end if;
|
846 |
|
|
|
847 |
|
|
else
|
848 |
|
|
Counter <= Counter + 1;
|
849 |
|
|
end if;
|
850 |
|
|
end if;
|
851 |
|
|
|
852 |
|
|
|
853 |
|
|
end process;
|
854 |
|
|
|
855 |
|
|
process(Flash_Memory_Clock)
|
856 |
|
|
variable Flash_Memory_Counter : integer range 0 to 5;
|
857 |
|
|
begin
|
858 |
|
|
if falling_edge(Flash_Memory_Clock) then
|
859 |
|
|
case Flash_Memory_Counter is
|
860 |
|
|
when 0 =>
|
861 |
|
|
Flash_Memory_Data_Valid <= '0';
|
862 |
|
|
FLASH_MEMORY_nRESET <= '1';
|
863 |
|
|
FLASH_MEMORY_nWE <= '1';
|
864 |
|
|
FLASH_MEMORY_nOE <= '1';
|
865 |
|
|
FLASH_MEMORY_nCE <= '1';
|
866 |
|
|
when 1 =>
|
867 |
|
|
FLASH_MEMORY_ADDRESS <= FLASH_MEMORY_ADDRESS_IN;
|
868 |
|
|
when 2 =>
|
869 |
|
|
FLASH_MEMORY_nCE <= '0';
|
870 |
|
|
when 3 =>
|
871 |
|
|
FLASH_MEMORY_nOE <= '0';
|
872 |
|
|
when 4 =>
|
873 |
|
|
FLASH_MEMORY_DATA_OUT <= FLASH_MEMORY_DATA;
|
874 |
|
|
when 5 =>
|
875 |
|
|
FLASH_MEMORY_nCE <= '1';
|
876 |
|
|
FLASH_MEMORY_nOE <= '1';
|
877 |
|
|
Flash_Memory_Data_Valid <= '1';
|
878 |
|
|
when others => null;
|
879 |
|
|
end case;
|
880 |
|
|
if Flash_Memory_Counter = 5 then
|
881 |
|
|
Flash_Memory_Counter := 0;
|
882 |
|
|
else
|
883 |
|
|
Flash_Memory_Counter := Flash_Memory_Counter + 1;
|
884 |
|
|
end if;
|
885 |
|
|
end if;
|
886 |
|
|
end process;
|
887 |
|
|
|
888 |
|
|
|
889 |
|
|
end HD_ADPCM_Codec_Function;
|
890 |
|
|
------------------------Flash Memory Driver------------------------------
|
891 |
|
|
|
892 |
|
|
|
893 |
|
|
|
894 |
|
|
|
895 |
|
|
------------------------ADPCM Decoder 1-Bit Driver------------------------------
|
896 |
|
|
library ieee;
|
897 |
|
|
use ieee.std_logic_1164.all;
|
898 |
|
|
use ieee.numeric_std.all;
|
899 |
|
|
|
900 |
|
|
entity ADPCM_Decoder_1_Bit is
|
901 |
|
|
port (
|
902 |
|
|
CLOCK_IN : IN STD_LOGIC;
|
903 |
|
|
ACTIVE_IN : IN STD_LOGIC;
|
904 |
|
|
ADPCM_DATA_IN : IN STD_LOGIC;
|
905 |
|
|
PCM_DATA_OUT : OUT STD_LOGIC_VECTOR(15 downto 0)
|
906 |
|
|
);
|
907 |
|
|
end ADPCM_Decoder_1_Bit;
|
908 |
|
|
|
909 |
|
|
|
910 |
|
|
architecture HD_ADPCM_Codec_Function of ADPCM_Decoder_1_Bit is
|
911 |
|
|
|
912 |
|
|
signal Active_Module : STD_LOGIC;
|
913 |
|
|
signal Last_ADPCM_Data : STD_LOGIC;
|
914 |
|
|
type Stream is array(0 to 15) of integer;
|
915 |
|
|
constant PCM_Data_Converter : Stream := (
|
916 |
|
|
1,
|
917 |
|
|
2,
|
918 |
|
|
4,
|
919 |
|
|
8,
|
920 |
|
|
16,
|
921 |
|
|
32,
|
922 |
|
|
64,
|
923 |
|
|
128,
|
924 |
|
|
256,
|
925 |
|
|
512,
|
926 |
|
|
1024,
|
927 |
|
|
2048,
|
928 |
|
|
4096,
|
929 |
|
|
8192,
|
930 |
|
|
16384,
|
931 |
|
|
32768);
|
932 |
|
|
|
933 |
|
|
begin
|
934 |
|
|
|
935 |
|
|
process(CLOCK_IN, ACTIVE_IN)
|
936 |
|
|
variable Last_PCM_Data : integer range -32767 to 32768;
|
937 |
|
|
variable PCM_Data : integer range 0 to 65535;
|
938 |
|
|
variable PCM_Data_Difference : integer range -32767 to 32768;
|
939 |
|
|
variable ADPCM_Decoder_Step_Size_Table_Pointer : integer range 0 to 1000;
|
940 |
|
|
variable ADPCM_Decoder_State_Counter : integer range 0 to 5;
|
941 |
|
|
begin
|
942 |
|
|
|
943 |
|
|
if rising_edge(CLOCK_IN) then
|
944 |
|
|
if Active_Module = not ACTIVE_IN then
|
945 |
|
|
case ADPCM_Decoder_State_Counter is
|
946 |
|
|
when 0 =>
|
947 |
|
|
PCM_Data_Difference := (ADPCM_Decoder_Step_Size_Table_Pointer * ADPCM_Decoder_Step_Size_Table_Pointer)/100;
|
948 |
|
|
when 1 =>
|
949 |
|
|
if Last_ADPCM_Data = ADPCM_DATA_IN then
|
950 |
|
|
if ADPCM_Decoder_Step_Size_Table_Pointer < 1000 then
|
951 |
|
|
ADPCM_Decoder_Step_Size_Table_Pointer := ADPCM_Decoder_Step_Size_Table_Pointer + 1;
|
952 |
|
|
end if;
|
953 |
|
|
else
|
954 |
|
|
if ADPCM_Decoder_Step_Size_Table_Pointer > 0 then
|
955 |
|
|
ADPCM_Decoder_Step_Size_Table_Pointer := ADPCM_Decoder_Step_Size_Table_Pointer - 1;
|
956 |
|
|
end if;
|
957 |
|
|
end if;
|
958 |
|
|
when 2 =>
|
959 |
|
|
Last_ADPCM_Data <= ADPCM_DATA_IN;
|
960 |
|
|
if ADPCM_DATA_IN = '1' then
|
961 |
|
|
Last_PCM_Data := Last_PCM_Data - PCM_Data_Difference;
|
962 |
|
|
else
|
963 |
|
|
Last_PCM_Data := Last_PCM_Data + PCM_Data_Difference;
|
964 |
|
|
end if;
|
965 |
|
|
when 3 =>
|
966 |
|
|
PCM_Data := Last_PCM_Data;
|
967 |
|
|
when 4 =>
|
968 |
|
|
for i in 15 downto 0 loop
|
969 |
|
|
if PCM_Data > PCM_Data_Converter(i) then
|
970 |
|
|
PCM_Data := PCM_Data - PCM_Data_Converter(i);
|
971 |
|
|
PCM_DATA_OUT(i) <= '1';
|
972 |
|
|
else
|
973 |
|
|
PCM_DATA_OUT(i) <= '0';
|
974 |
|
|
end if;
|
975 |
|
|
end loop;
|
976 |
|
|
when others => null;
|
977 |
|
|
end case;
|
978 |
|
|
|
979 |
|
|
if ADPCM_Decoder_State_Counter = 5 then
|
980 |
|
|
ADPCM_Decoder_State_Counter := 0;
|
981 |
|
|
Active_Module <= ACTIVE_IN;
|
982 |
|
|
else
|
983 |
|
|
ADPCM_Decoder_State_Counter := ADPCM_Decoder_State_Counter + 1;
|
984 |
|
|
end if;
|
985 |
|
|
end if;
|
986 |
|
|
end if;
|
987 |
|
|
end process;
|
988 |
|
|
|
989 |
|
|
|
990 |
|
|
end HD_ADPCM_Codec_Function;
|
991 |
|
|
------------------------ADPCM Decoder 1-Bit Driver------------------------------
|
992 |
|
|
|
993 |
|
|
|
994 |
|
|
|
995 |
|
|
|
996 |
|
|
|