| Line 13... |
Line 13... |
-- Dependencies:
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-- Dependencies:
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--
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--
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-- Revision:
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-- Revision:
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-- Revision 0.01 - File Created
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-- Revision 0.01 - File Created
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-- Revision 0.02 - separated RX and TX clocks
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-- Revision 0.02 - separated RX and TX clocks
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-- Revision 0.03 - Added mac_tx_tfirst
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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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| Line 45... |
Line 46... |
ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us
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ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us
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-- MAC Transmitter
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-- MAC Transmitter
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mac_tx_tdata : out std_logic_vector(7 downto 0); -- data byte to tx
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mac_tx_tdata : out std_logic_vector(7 downto 0); -- data byte to tx
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mac_tx_tvalid : out std_logic; -- tdata is valid
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mac_tx_tvalid : out std_logic; -- tdata is valid
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mac_tx_tready : in std_logic; -- mac is ready to accept data
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mac_tx_tready : in std_logic; -- mac is ready to accept data
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mac_tx_tfirst : out std_logic; -- indicates first byte of frame
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mac_tx_tlast : out std_logic; -- indicates last byte of frame
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mac_tx_tlast : out std_logic; -- indicates last byte of frame
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-- MAC Receiver
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-- MAC Receiver
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mac_rx_tdata : in std_logic_vector(7 downto 0); -- data byte received
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mac_rx_tdata : in std_logic_vector(7 downto 0); -- data byte received
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mac_rx_tvalid : in std_logic; -- indicates tdata is valid
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mac_rx_tvalid : in std_logic; -- indicates tdata is valid
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mac_rx_tready : out std_logic; -- tells mac that we are ready to take data
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mac_rx_tready : out std_logic; -- tells mac that we are ready to take data
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| Line 85... |
Line 87... |
-- MAC layer TX signals
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-- MAC layer TX signals
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mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx)
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mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx)
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mac_tx_granted : in std_logic; -- indicates that access to channel has been granted
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mac_tx_granted : in std_logic; -- indicates that access to channel has been granted
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mac_data_out_ready : in std_logic; -- indicates system ready to consume data
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mac_data_out_ready : in std_logic; -- indicates system ready to consume data
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mac_data_out_valid : out std_logic; -- indicates data out is valid
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mac_data_out_valid : out std_logic; -- indicates data out is valid
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mac_data_out_first : out std_logic; -- with data out valid indicates the first byte of a frame
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mac_data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame
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mac_data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame
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mac_data_out : out std_logic_vector (7 downto 0) -- ethernet frame (from dst mac addr through to last byte of frame)
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mac_data_out : out std_logic_vector (7 downto 0) -- ethernet frame (from dst mac addr through to last byte of frame)
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);
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);
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END COMPONENT;
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END COMPONENT;
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| Line 107... |
Line 110... |
mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx)
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mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx)
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mac_tx_granted : in std_logic; -- indicates that access to channel has been granted
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mac_tx_granted : in std_logic; -- indicates that access to channel has been granted
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data_out_clk : in std_logic;
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data_out_clk : in std_logic;
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data_out_ready : in std_logic; -- indicates system ready to consume data
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data_out_ready : in std_logic; -- indicates system ready to consume data
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data_out_valid : out std_logic; -- indicates data out is valid
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data_out_valid : out std_logic; -- indicates data out is valid
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data_out_first : out std_logic; -- with data out valid indicates the first byte of a frame
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data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame
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data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame
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data_out : out std_logic_vector (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame)
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data_out : out std_logic_vector (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame)
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-- system signals
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-- system signals
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our_mac_address : in STD_LOGIC_VECTOR (47 downto 0);
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our_mac_address : in STD_LOGIC_VECTOR (47 downto 0);
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our_ip_address : in STD_LOGIC_VECTOR (31 downto 0);
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our_ip_address : in STD_LOGIC_VECTOR (31 downto 0);
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| Line 125... |
Line 129... |
|
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req_1 : in std_logic;
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req_1 : in std_logic;
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grant_1 : out std_logic;
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grant_1 : out std_logic;
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data_1 : in std_logic_vector(7 downto 0); -- data byte to tx
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data_1 : in std_logic_vector(7 downto 0); -- data byte to tx
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valid_1 : in std_logic; -- tdata is valid
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valid_1 : in std_logic; -- tdata is valid
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first_1 : in std_logic; -- indicates first byte of frame
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last_1 : in std_logic; -- indicates last byte of frame
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last_1 : in std_logic; -- indicates last byte of frame
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req_2 : in std_logic;
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req_2 : in std_logic;
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grant_2 : out std_logic;
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grant_2 : out std_logic;
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data_2 : in std_logic_vector(7 downto 0); -- data byte to tx
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data_2 : in std_logic_vector(7 downto 0); -- data byte to tx
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valid_2 : in std_logic; -- tdata is valid
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valid_2 : in std_logic; -- tdata is valid
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first_2 : in std_logic; -- indicates first byte of frame
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last_2 : in std_logic; -- indicates last byte of frame
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last_2 : in std_logic; -- indicates last byte of frame
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data : out std_logic_vector(7 downto 0); -- data byte to tx
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data : out std_logic_vector(7 downto 0); -- data byte to tx
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valid : out std_logic; -- tdata is valid
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valid : out std_logic; -- tdata is valid
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first : out std_logic; -- indicates first byte of frame
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last : out std_logic -- indicates last byte of frame
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last : out std_logic -- indicates last byte of frame
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);
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);
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END COMPONENT;
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END COMPONENT;
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---------------------------
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---------------------------
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| Line 151... |
Line 158... |
-- MAC arbitration busses
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-- MAC arbitration busses
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signal ip_mac_req : std_logic;
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signal ip_mac_req : std_logic;
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signal ip_mac_grant : std_logic;
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signal ip_mac_grant : std_logic;
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signal ip_mac_data_out : std_logic_vector (7 downto 0);
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signal ip_mac_data_out : std_logic_vector (7 downto 0);
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signal ip_mac_valid : std_logic;
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signal ip_mac_valid : std_logic;
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signal ip_mac_first : std_logic;
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signal ip_mac_last : std_logic;
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signal ip_mac_last : std_logic;
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signal arp_mac_req : std_logic;
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signal arp_mac_req : std_logic;
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signal arp_mac_grant : std_logic;
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signal arp_mac_grant : std_logic;
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signal arp_mac_data_out : std_logic_vector (7 downto 0);
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signal arp_mac_data_out : std_logic_vector (7 downto 0);
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signal arp_mac_valid : std_logic;
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signal arp_mac_valid : std_logic;
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signal arp_mac_first : std_logic;
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signal arp_mac_last : std_logic;
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signal arp_mac_last : std_logic;
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-- MAC RX bus
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-- MAC RX bus
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signal mac_rx_tready_int : std_logic;
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signal mac_rx_tready_int : std_logic;
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-- MAC TX bus
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-- MAC TX bus
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signal mac_tx_tdata_int : std_logic_vector (7 downto 0);
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signal mac_tx_tdata_int : std_logic_vector (7 downto 0);
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signal mac_tx_tvalid_int : std_logic;
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signal mac_tx_tvalid_int : std_logic;
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signal mac_tx_tfirst_int : std_logic;
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signal mac_tx_tlast_int : std_logic;
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signal mac_tx_tlast_int : std_logic;
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-- control signals
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-- control signals
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signal mac_tx_granted_int : std_logic;
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signal mac_tx_granted_int : std_logic;
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|
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begin
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begin
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| Line 173... |
Line 183... |
mac_rx_tready_int <= '1'; -- enable the mac receiver
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mac_rx_tready_int <= '1'; -- enable the mac receiver
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-- set followers
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-- set followers
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mac_tx_tdata <= mac_tx_tdata_int;
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mac_tx_tdata <= mac_tx_tdata_int;
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mac_tx_tvalid <= mac_tx_tvalid_int;
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mac_tx_tvalid <= mac_tx_tvalid_int;
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mac_tx_tfirst <= mac_tx_tfirst_int;
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mac_tx_tlast <= mac_tx_tlast_int;
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mac_tx_tlast <= mac_tx_tlast_int;
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mac_rx_tready <= mac_rx_tready_int;
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mac_rx_tready <= mac_rx_tready_int;
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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| Line 201... |
Line 212... |
arp_req_rslt => arp_req_rslt_int,
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arp_req_rslt => arp_req_rslt_int,
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mac_tx_req => ip_mac_req,
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mac_tx_req => ip_mac_req,
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mac_tx_granted => ip_mac_grant,
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mac_tx_granted => ip_mac_grant,
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mac_data_out_ready => mac_tx_tready,
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mac_data_out_ready => mac_tx_tready,
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mac_data_out_valid => ip_mac_valid,
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mac_data_out_valid => ip_mac_valid,
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mac_data_out_first => ip_mac_first,
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mac_data_out_last => ip_mac_last,
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mac_data_out_last => ip_mac_last,
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mac_data_out => ip_mac_data_out,
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mac_data_out => ip_mac_data_out,
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mac_data_in => mac_rx_tdata,
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mac_data_in => mac_rx_tdata,
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mac_data_in_valid => mac_rx_tvalid,
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mac_data_in_valid => mac_rx_tvalid,
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mac_data_in_last => mac_rx_tlast
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mac_data_in_last => mac_rx_tlast
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| Line 228... |
Line 240... |
mac_tx_req => arp_mac_req,
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mac_tx_req => arp_mac_req,
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mac_tx_granted => arp_mac_grant,
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mac_tx_granted => arp_mac_grant,
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data_out_clk => tx_clk,
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data_out_clk => tx_clk,
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data_out_ready => mac_tx_tready,
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data_out_ready => mac_tx_tready,
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data_out_valid => arp_mac_valid,
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data_out_valid => arp_mac_valid,
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data_out_first => arp_mac_first,
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data_out_last => arp_mac_last,
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data_out_last => arp_mac_last,
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data_out => arp_mac_data_out,
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data_out => arp_mac_data_out,
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-- system signals
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-- system signals
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our_mac_address => our_mac_address,
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our_mac_address => our_mac_address,
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our_ip_address => our_ip_address,
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our_ip_address => our_ip_address,
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| Line 249... |
Line 262... |
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req_1 => ip_mac_req,
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req_1 => ip_mac_req,
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grant_1 => ip_mac_grant,
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grant_1 => ip_mac_grant,
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data_1 => ip_mac_data_out,
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data_1 => ip_mac_data_out,
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valid_1 => ip_mac_valid,
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valid_1 => ip_mac_valid,
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first_1 => ip_mac_first,
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last_1 => ip_mac_last,
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last_1 => ip_mac_last,
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req_2 => arp_mac_req,
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req_2 => arp_mac_req,
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grant_2 => arp_mac_grant,
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grant_2 => arp_mac_grant,
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data_2 => arp_mac_data_out,
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data_2 => arp_mac_data_out,
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valid_2 => arp_mac_valid,
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valid_2 => arp_mac_valid,
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first_2 => arp_mac_first,
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last_2 => arp_mac_last,
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last_2 => arp_mac_last,
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data => mac_tx_tdata_int,
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data => mac_tx_tdata_int,
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valid => mac_tx_tvalid_int,
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valid => mac_tx_tvalid_int,
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first => mac_tx_tfirst_int,
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last => mac_tx_tlast_int
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last => mac_tx_tlast_int
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);
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);
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end structural;
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end structural;
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