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-- Revision 0.01 - File Created
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-- Revision 0.01 - File Created
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-- Additional Comments:
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-- Additional Comments:
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--
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--
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----------------------------------------------------------------------------------
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----------------------------------------------------------------------------------
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library IEEE;
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library IEEE;
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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 work.arp_types.all;
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use work.arp_types.all;
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entity arp_SYNC is
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entity arp_SYNC is
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Port (
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port (
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-- REQ to TX
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-- REQ to TX
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arp_nwk_req : in arp_nwk_request_t; -- request for a translation from IP to MAC
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arp_nwk_req : in arp_nwk_request_t; -- request for a translation from IP to MAC
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send_who_has : out std_logic;
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send_who_has : out std_logic;
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ip_entry : out STD_LOGIC_VECTOR (31 downto 0);
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ip_entry : out std_logic_vector (31 downto 0);
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-- RX to TX
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-- RX to TX
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recv_who_has : in std_logic; -- this is for us, we will respond
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recv_who_has : in std_logic; -- this is for us, we will respond
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arp_entry_for_who_has : in arp_entry_t;
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arp_entry_for_who_has : in arp_entry_t;
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send_I_have : out std_logic;
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send_I_have : out std_logic;
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arp_entry : out arp_entry_t;
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arp_entry : out arp_entry_t;
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type sync_state_t is (IDLE,HOLD1, HOLD2);
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type sync_state_t is (IDLE,HOLD1, HOLD2);
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-- state registers
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-- state registers
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signal ip_entry_state : sync_state_t;
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signal ip_entry_state : sync_state_t;
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signal arp_entry_state : sync_state_t;
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signal arp_entry_state : sync_state_t;
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signal ip_entry_reg : STD_LOGIC_VECTOR (31 downto 0);
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signal ip_entry_reg : std_logic_vector (31 downto 0);
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signal arp_entry_reg : arp_entry_t;
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signal arp_entry_reg : arp_entry_t;
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-- synchronisation registers
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-- synchronisation registers
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signal send_who_has_r1 : std_logic;
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signal send_who_has_r1 : std_logic;
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signal send_who_has_r2 : std_logic;
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signal send_who_has_r2 : std_logic;
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