Entity: arp

• File: arp.v

Diagram

Description

Generics

Generic name	Type	Value	Description
DATA_WIDTH		8	Width of AXI stream interfaces in bits
KEEP_ENABLE		undefined	Propagate tkeep signal If disabled, tkeep assumed to be 1'b1
KEEP_WIDTH		undefined	tkeep signal width (words per cycle)
CACHE_ADDR_WIDTH		9	Log2 of ARP cache size
REQUEST_RETRY_COUNT		4	ARP request retry count
REQUEST_RETRY_INTERVAL		125000000*2	ARP request retry interval (in cycles)
REQUEST_TIMEOUT		125000000*30	ARP request timeout (in cycles)

Ports

Port name	Direction	Type	Description
clk	input	wire
rst	input	wire
s_eth_hdr_valid	input	wire	* Ethernet frame input */
s_eth_hdr_ready	output	wire
s_eth_dest_mac	input	wire [47:0]
s_eth_src_mac	input	wire [47:0]
s_eth_type	input	wire [15:0]
s_eth_payload_axis_tdata	input	wire [DATA_WIDTH-1:0]
s_eth_payload_axis_tkeep	input	wire [KEEP_WIDTH-1:0]
s_eth_payload_axis_tvalid	input	wire
s_eth_payload_axis_tready	output	wire
s_eth_payload_axis_tlast	input	wire
s_eth_payload_axis_tuser	input	wire
m_eth_hdr_valid	output	wire	* Ethernet frame output */
m_eth_hdr_ready	input	wire
m_eth_dest_mac	output	wire [47:0]
m_eth_src_mac	output	wire [47:0]
m_eth_type	output	wire [15:0]
m_eth_payload_axis_tdata	output	wire [DATA_WIDTH-1:0]
m_eth_payload_axis_tkeep	output	wire [KEEP_WIDTH-1:0]
m_eth_payload_axis_tvalid	output	wire
m_eth_payload_axis_tready	input	wire
m_eth_payload_axis_tlast	output	wire
m_eth_payload_axis_tuser	output	wire
arp_request_valid	input	wire	* ARP requests */
arp_request_ready	output	wire
arp_request_ip	input	wire [31:0]
arp_response_valid	output	wire
arp_response_ready	input	wire
arp_response_error	output	wire
arp_response_mac	output	wire [47:0]
local_mac	input	wire [47:0]	* Configuration */
local_ip	input	wire [31:0]
gateway_ip	input	wire [31:0]
subnet_mask	input	wire [31:0]
clear_cache	input	wire

Signals

Name	Type	Description
incoming_frame_valid	wire
incoming_frame_ready	reg
incoming_eth_dest_mac	wire [47:0]
incoming_eth_src_mac	wire [47:0]
incoming_eth_type	wire [15:0]
incoming_arp_htype	wire [15:0]
incoming_arp_ptype	wire [15:0]
incoming_arp_hlen	wire [7:0]
incoming_arp_plen	wire [7:0]
incoming_arp_oper	wire [15:0]
incoming_arp_sha	wire [47:0]
incoming_arp_spa	wire [31:0]
incoming_arp_tha	wire [47:0]
incoming_arp_tpa	wire [31:0]
outgoing_frame_valid_reg	reg
outgoing_frame_valid_next	reg
outgoing_frame_ready	wire
outgoing_eth_dest_mac_reg	reg [47:0]
outgoing_eth_dest_mac_next	reg [47:0]
outgoing_arp_oper_reg	reg [15:0]
outgoing_arp_oper_next	reg [15:0]
outgoing_arp_tha_reg	reg [47:0]
outgoing_arp_tha_next	reg [47:0]
outgoing_arp_tpa_reg	reg [31:0]
outgoing_arp_tpa_next	reg [31:0]
cache_query_request_valid_reg	reg
cache_query_request_valid_next	reg
cache_query_request_ip_reg	reg [31:0]
cache_query_request_ip_next	reg [31:0]
cache_query_response_valid	wire
cache_query_response_error	wire
cache_query_response_mac	wire [47:0]
cache_write_request_valid_reg	reg
cache_write_request_valid_next	reg
cache_write_request_ip_reg	reg [31:0]
cache_write_request_ip_next	reg [31:0]
cache_write_request_mac_reg	reg [47:0]
cache_write_request_mac_next	reg [47:0]
arp_request_operation_reg	reg
arp_request_operation_next	reg
arp_request_ready_reg	reg
arp_request_ready_next	reg
arp_request_ip_reg	reg [31:0]
arp_request_ip_next	reg [31:0]
arp_response_valid_reg	reg
arp_response_valid_next	reg
arp_response_error_reg	reg
arp_response_error_next	reg
arp_response_mac_reg	reg [47:0]
arp_response_mac_next	reg [47:0]
arp_request_retry_cnt_reg	reg [5:0]
arp_request_retry_cnt_next	reg [5:0]
arp_request_timer_reg	reg [35:0]
arp_request_timer_next	reg [35:0]

Constants

Name	Type	Value	Description
ARP_OPER_ARP_REQUEST	[15:0]	16'h0001
ARP_OPER_ARP_REPLY	[15:0]	16'h0002
ARP_OPER_INARP_REQUEST	[15:0]	16'h0008
ARP_OPER_INARP_REPLY	[15:0]	16'h0009

Processes

• unnamed: ( @* )

• unnamed: ( @(posedge clk) )

Instantiations

• arp_eth_rx_inst: arp_eth_rx

• arp_eth_tx_inst: arp_eth_tx

• arp_cache_inst: arp_cache