Entity: ArpEngine
- File: ArpEngine.vhd
Diagram
Description
Company : SLAC National Accelerator Laboratory
Description: ARP Engine
This file is part of 'SLAC Firmware Standard Library'. It is subject to the license terms in the LICENSE.txt file found in the top-level directory of this distribution and at: https://confluence.slac.stanford.edu/display/ppareg/LICENSE.html. No part of 'SLAC Firmware Standard Library', including this file, may be copied, modified, propagated, or distributed except according to
the terms contained in the LICENSE.txt file.
Generics
| Generic name | Type | Value | Description |
|---|---|---|---|
| TPD_G | time | 1 ns | |
| CLIENT_SIZE_G | positive | 1 | |
| CLK_FREQ_G | real | 156.25E+06 | In units of Hz |
| VLAN_G | boolean | false |
Ports
| Port name | Direction | Type | Description |
|---|---|---|---|
| localMac | in | slv(47 downto 0) | Local Configuration |
| localIp | in | slv(31 downto 0) | |
| arpReqMasters | in | AxiStreamMasterArray(CLIENT_SIZE_G-1 downto 0) | Request via IP address |
| arpReqSlaves | out | AxiStreamSlaveArray(CLIENT_SIZE_G-1 downto 0) | |
| arpAckMasters | out | AxiStreamMasterArray(CLIENT_SIZE_G-1 downto 0) | Respond with MAC address |
| arpAckSlaves | in | AxiStreamSlaveArray(CLIENT_SIZE_G-1 downto 0) | |
| ibArpMaster | in | AxiStreamMasterType | Interface to Ethernet Frame MUX/DEMUX |
| ibArpSlave | out | AxiStreamSlaveType | |
| obArpMaster | out | AxiStreamMasterType | |
| obArpSlave | in | AxiStreamSlaveType | |
| clk | in | sl | Clock and Reset |
| rst | in | sl |
Signals
| Name | Type | Description |
|---|---|---|
| r | RegType | |
| rin | RegType |
Constants
| Name | Type | Value | Description |
|---|---|---|---|
| BROADCAST_MAC_C | slv(47 downto 0) | (others => '1') | |
| HARDWWARE_TYPE_C | slv(15 downto 0) | x"0100" | HardwareType = ETH = 0x0001 |
| PROTOCOL_TYPE_C | slv(15 downto 0) | x"0008" | ProtocolType = IP = 0x0800 |
| HARDWWARE_LEN_C | slv(7 downto 0) | x"06" | HardwareLength = 6 (6 Bytes/MAC) |
| PROTOCOL_LEN_C | slv(7 downto 0) | x"04" | ProtocolLength = 4 (6 Bytes/IP) |
| ARP_REQ_C | slv(15 downto 0) | x"0100" | OpCode = ARP Request = 0x0001 |
| ARP_REPLY_C | slv(15 downto 0) | x"0200" | OpCode = ARP Reply = 0x0002 |
| TIMER_1_SEC_C | natural | getTimeRatio(CLK_FREQ_G, 1.0) |
|
| REG_INIT_C | RegType | ( cnt => 0, tData => (others => (others => '0')), ibArpSlave => AXI_STREAM_SLAVE_INIT_C, txArpMaster => AXI_STREAM_MASTER_INIT_C, arpReqSlaves => (others => AXI_STREAM_SLAVE_INIT_C), arpAckMasters => (others => AXI_STREAM_MASTER_INIT_C), arpTimers => (others => 0), reqCnt => 0, ackCnt => 0, state => IDLE_S) |
Types
| Name | Type | Description |
|---|---|---|
| StateType | ( IDLE_S, RX_S, CHECK_S, SCAN_S, TX_S) |
|
| RegType |
Processes
- comb: ( arpAckSlaves, arpReqMasters, ibArpMaster, localIp, localMac, obArpSlave, r, rst )
- seq: ( clk )