Ethernet ip core. 0, supporting cross-platform (Linux/Windows).
Ethernet ip core It enables an FPGA to interface to another device over a copper or optical transceiver module. It incorporates a 10/100/1000 Mbps Ethernet media access controller (MAC) and an optional 1000BASE-X/SGMII physical coding sublayer (PCS) with an embedded physical medium attachment (PMA) built with either on 100/40G Ethernet IP Core. 6T Ethernet MAC IP 10G-1. Ethernet (SyncE)-compliant jitter attenuation, and on-board Microsemi VSC8575 PHY. Ethernet MAC Options 3. Stratix® 10 Low Latency 40G Ethernet IP Core Parameters 3. Extreme Low Latency Ethernet IP Core. MES has been designed to address the maximum throughput using the Microsemi's portfolio of Gigabit Ethernet (GE) Intellectual Property (IP) cores simplify integration of 10/100/1000BASE-T functionality into Ethernet IC solutions for consumer electronics, broadband access, network security, printer, smart grid, storage, and more. Figure 1. e. Ixiasoft. Add a TCP/IP core. Table of Contents. Triple Speed Ethernet IP Core v14. When using this IP Core in a different density, package, speed or grade within the ORCA 4 family, performance may vary. ATX PLL IP Parameter Core Settings for PIPE 2. 3ba-2010. Download PDF. Future releases of the IP core also provide a hardware design example you can compile and test in hardware. AMD provides the 10 Gigabit Ethernet PCS/PMA (10GBASE-R) IP core with integrated serial interface to ensure first time success in your design. The goal of this paper is to survey available open-source Ethernet MAC IP cores, evaluate existing designs in terms of performance This L3 Ethernet Switch/Router IP core is built around a shared buffer memory architecture providing wire-speed switching and routing on all ports without head of line blocking. Triple-Speed Ethernet Intel® FPGA IP User Guide Archives 12. Evaluation Request. Like the one I can get in cmd. About the Low Latency 40G Ethernet Core 2. So, anyone can share me the completed design which would utilize amicroblaze and Ethernet core. 0 version of the Altera Low Latency 40- and 100-Gbps Ethernet MAC and PHY IP core that targets a Stratix ® V device or an Arria ® 10 device. It The Ethernet IP Core uses three types of signals to connect to media: WISHBONE signals to connect to the Host Interface. 07. Thus, the usage of an open-source Ethernet MAC IP core can be a solution to overcome the limitations of commercial IP cores mentioned previously which finally was the motivation for the authors of this work. How to Connect TX PLLs for PIPE Gen1, Gen2, and Gen3 Modes 2. Refer to the Ethernet IP Naming Convention table to view the device-specific IP The 40G Ethernet MAC and PHY FPGA IP core offers IEEE 802. PCS/Transceiver Options. 3 and 802. The MAC is the portion of ethernet core that handles the CSMA/CD protocol for tests (eth_cop is not part of the simulation environment). 3ba and 802. 1. On the 10G Ethernet Overview UG0727 Revision 6. 0: Intel® Stratix® 10 Low Latency 100-Gbps Ethernet IP Core User Guide 18. 3z (1000BaseX) specification. ===== UDP/IP Core for FPGAs (in VHDL) ===== Update date: February 9th, 2010 Build date: December 15th, 2009 Description ----- This is a VHDL implementation of a UDP/IP core that can be connected to the input and output ports of the Virtex-5 Ethernet MAC Local Link Wrapper and enable communication betweena a PC and a FPGA. It consists of a synthesizable Verilog RTL core that provides all. 7 (WebPack will work) for the TX FIFO generation. 6. The 200Gbps Ethernet FPGA IP core solution offers a fully integrated IEEE802. It is designed to run according to the IEEE 802. 4. As machines and devices become connected, data will be more easily accessible – those who don’t take advantage of it will be left The deterministic testing together with the CDV and RM is applied in the paper to specifically verify the design of Ethernet IP MAC cores from open cores The Specman Elite e-language originally This happens when changing the ip Adress of the ctrlX core. This IP core utilizes the AMD 10G Ethernet MAC IP core connected to the 10GBASE-R or 10GBASE-KR IP. 1AS-2020 (requires lightweight software stack) Traffic shaping per IEEE 802. 3by, and the 25G Ethernet Consortium; Low latency 64-bit or 32-bit 10G Ethernet MAC and BASE-R IP; 10G Ethernet MAC (64-bit) standalone; 10G/25G Ethernet MAC and BASE-R or BASE-KR are separately licensed fee based options (see order page) 1G Ethernet PHY IP Core is available for licensing as a Whitebox IP, with unlimited usage and full modification rights granted to the customer, ensuring a high level of flexibility with the 10 Ethernet TSN Switch IP Core - Efficient and Massively Customizable Libero SoC Design suite provides access to all the Microchip’s inhouse (DirectCores) IP Cores covering a broad range of functionality. NET. This core supports the use of MII, GMII, SGMII, RGMII, and 1000BASE-X interfaces to connect a media access The IP core is designed to the IEEE 802. 4 from the 25 Gigabit Ethernet Consortium and the IEEE 802. Driver/library to communicate with Rockwell PLCs (ControlLogix family) using CIP protocol over Ethernet/IP. The core has been designed to The Ethernet IP Core is capable of operating at 10 or 100 Mbps for Ethernet and Fast Ethernet applications. Packet Architects can provide IP Low Latency 100G Ethernet Stratix® 10 FPGA IP Core v22. Soft or firm IP core synthesizable to any ASIC or FPGA technology. Our goal is to provide reliable, hardware accelerator capabilities for high end FPGAs This Ethernet core targets 1G/10GbE applications including network interfaces to 1G/10GbE dual speed SFP+ pluggable modules, 1G/10GbE 10GBASE‑T copper external PHY devices to Ethernet Media Access Control (MAC) controller is an indispensable IP core in Field-Programmable Gate Array (FPGA), in order to realize the independent intellectual This core is designed for implementation of CSMA/CD LAN in accordance with the IEEE 802. The Managed Ethernet Switch IP Core is a tri-speed (1GE; 100M; 10M) scalable and highly-optimized Ethernet Switch implementable on AMD FPGA families. 1 Arria 10 Edition 2. The L2 Ethernet Switching IP features a processor interface allowing setup of tables and register. PHY IP Core for PCI Express (PIPE) 10. Stratix® 10 H-Tile Hard IP for Ethernet IP Core v17. Xilinx recommends that you use the latest version of LogiCORE™ IP cores whenever possible to access the latest enhancements and architecture support. 0 (ISE v1. Due to core fabric GPIO architecture changes, Triple Speed Ethernet IP Core with RGMII mode has not been able to close timing in Intel® Quartus® Prime TimeQuest for Intel® Arria® 10, Cyclone®10 GX, and Stratix®10 devices. More capable than many offloading engines, it allows systems to connect to an Internet Protocol (IP) network and exchange data using the TCP protocol without requiring assistance from — or even the presence of — a system processor. T4 T8 T13 T20 T35 T55 T85 T120 Ti60 Ti35 IP : Ethernet: Triple Speed Ethernet MAC Core: T4 T8 T13 T20 T35 T55 T85 T120 Ti60 Ti35 IP : Foundation IP Cores: Trion PLL Auto-Reset Core : T4 T8 T13 T20 T35 T55 T85 T120 IP : Hi, I don`t anything about Xilinx Ethernet and its subsystem. Release Information 2. 5G Ethernet subsystem IP core consists of tri-mode Ethernet MAC (TEMAC) and 1G/2. The tile type of the Intel® Quartus® Prime project specific target device. 10. Product Brief (HTK-ETC800G-ETH-FPGA) The 800Gbps Ethernet IP solution offers a fully integrated Ethernet Technology Consortium (ETC) compliant solution for use in core networks, Ethernet switching and network interface card (NIC) applications. This will include the DA, SA, Length/Type,Payload and FCS. This IP core supports Lattice’s IP hardware evaluation capability, which makes it possible to generate the IP core and operate in hardware for a limited time (approximately four hours) without requiring an IP license. 3by 25Gb Ethernet specification. Triple Speed Ethernet IP Core v13. The Multi-Rate Ethernet PHY FPGA IP core can dynamically support multiple data rates without any design regeneration or device reconfiguration. 3u specifications that define the 10 Mbps and 100 Mbps Ethernet standards 1. 802. 25G Ethernet Intel® Arria® 10 FPGA IP Design Example User Guide Archives The AXI 1G/2. 3 frame on the RX LBUS (512-bit) when RX_SOP=H. The AMD Versal™ adaptive SoC Integrated 100G Multirate Ethernet MAC (MRMAC) is a high performance, low latency, adaptable Ethernet integrated hard IP, targeting numerous customer networking applications. • Gigabit media-independent interface (GMII) The 50G Ethernet Intel® FPGA IP core implements the 25G & 50G Ethernet Specification, Draft 1. Functional Description 5. The core embeds a scatter-gather DMA. FES is suitable for applications such as: Wireless Backhaul; Wireline Access; Data Center Bridging; FES compatibility has been tested in three ISPCS plug-fests. Ready for IEEE 802. Close Filter Modal. The MAC client side interface for Triple-Speed Ethernet Intel® FPGA IP User Guide Updated for Intel ® Quartus Prime Design Suite: 19. 5G/5G/10G Multi-rate Ethernet PHY IP Core 7. Chevin Technology delivers high performance, configurable Ethernet IP Cores for Intel & Xilinx FPGAs. 3 Ethernet frame on the TX LBUS which is also: DA, SA, Length/Type,Payload and FCS? Packet Architects offers a series of high speed switching/routing IP cores developed using the unique FlexSwitch tool-chain. Enter ethernet_mac as the "New VHDL Library Name" and select the folder you cloned this repository to as "Library Files Location" Click "OK" in the dialog and the one popping up directly after it Right-click on the newly added library, Designed to the 25G Ethernet requirements for 10/25 Gb/s operation specified by IEEE 802. This specification enables high-performance, cost-efficient, and scalable interconnects for data center networks with server to top-of-rack links that are 50 Gbps Ethernet IP Core User Guide. The IP supports IEEE 1588 v2 standard with two-step timestamping The document describes an Ethernet IP core that includes: - Media Access Controller functionality that connects to an Ethernet PHY chip and a WISHBONE SoC bus - Support for 10/100 Mbps speeds, full duplex, flow control, collision detection, and buffer descriptors - Modules for transmit, receive, control, status, registers, and the WISHBONE interface - A testbench with modules for This user guide documents the 16. UseKestrel(opts => { IPUG51_3. Functional Description x. About the Low Latency E-Tile 40G Ethernet Intel® FPGA IP 2. Is there any Evaluation board that 2. This IP supports standard Ethernet interfaces such as the following. Triple Speed Ethernet . The core is designed to work with the latest Virtex®-6, Virtex-5 and I am trying to use the CtrlX-Core as Ethernet/Ip adapter (eth1 port) under an Allen-Bradley plc (Ethernet/ip scanner) I am still trying to manually configure the Assembly Instances here, but unfortunately my AB plc still can not communicate with the CtrlX-Core. Comcores 1G Ethernet Switch IP core is a silicon agnostic H-Tile Hard IP for Ethernet Intel Stratix 10 FPGA IP Core v24. 3 standards. The Ethernet Hard IP is a hardened core of assorted multi-lane and single-lane Ethernet components. It defines the access, object behavior and extensions that allow widely disparate devices to be accessed using a common mechanism. Enclustra's UDP/IP Ethernet IP core is optimized for Intel (Altera) and AMD FPGAs and easily enables FPGA-based subsystems to communicate with other subsystems via Ethernet, using Chevin Technology delivers high performance, configurable Ethernet IP Cores for Intel & Xilinx FPGAs. Triple-Speed Ethernet Stratix® 10 Intel® FPGA IP Design Example User Guide The subject paper proposes an approach to developing a design verification environment targeted towards complex application-specific integrated circuits (ASICs), with particular emphasis on embedded systems incorporating intellectual property (IP) cores. 11. For release notes for the Low Latency 40-Gbps Ethernet IP core for software releases v16. Introduction to the Protocol-Specific and Native Transceiver PHYs 2. 5GBASE-X and 2. From Quartus® Prime Design Suite software version 19. We're not sure if there is something wrong with the core, or that the ip Address is not in range of our router/computer. 21. Visible to Intel only — GUID: mwh1409958257680. Get Help motive applications. Advanced QoS features allow the most timing critical Ethernet specification. As shown in figure, the 100G/40G Ethernet IP includes: Implement Deterministic Ethernet and Seamless Redundancy with an IP core for FPGA that supports Time-sensitive Networking (TSN). Features and Benefits. The compilation-only example project cannot be configured in hardware. 25G Ethernet IP Core v16. 1: Level Two Title. It provides easy to use FIFO/AXI-Stream interfaces on the FPGA side and connects to any Ethernet PHY. 3-2012 Ethernet Standard. Incremental data starts from zero and gets incremented by one in subsequent packets. An emergent trend seems to realize this through the use of coverage-driven functional verification The switching core also features multiple VLAN tagging and untagging along with egress VLAN translation. cover all possible parameterizations of the Low Latency 100G Ethernet Intel Agilex FPGA IP Core. 2 and earlier of the Triple-Speed Ethernet IP core, the Triple-Speed Ethernet IP variant with LVDS I/O for PMA implementation The AXI Ethernet Lite MAC supports the IEEE Std. Learn more TSN Ethernet endpoint controller IP core, implementing timing synchronization, traffic shaping, preemption, and redundancy features. Ethernet MAC 10/100 Mbps. NET Standard Class Library project types? 1493. Knowledge of Logism and verilog HDL is very This repository contains approximately 860 free and open-source VHDL/Verilog IP cores. 1: Intel® Stratix® 10 Low Latency 100-Gbps Ethernet IP Core User Guide 17. The AXI 1G/2. 5G PCS/PMA or SGMII IP LogiCORE™ provides an Ethernet Physical Coding Sublayer (PCS) with a choice of either a 1G/2. 1as, * 802. 4 IP Version: 19. 3 and 1Gbps IEEE 802. It consists of a synthesizable Verilog RTL core that provides all features necessary to implement the Layer 2 protocol of the Ethernet standard. Low Latency 40G for ASIC Proto Ethernet IP Core Parameters: Main Tab; Parameter Range Default Setting Description; General: Target transceiver tile: H-Tile. 0 1. The main function of the 10 Gb Ethernet MAC is to ensure that the Media Access rules specified in the 802. 12. Solution. 3by compliant package for NIC (Network Interface Card) and Ethernet switching applications. The pervasive nature of Ethernet has made it an integral part of our connected world, driving communication speeds up to 1. The Ethernet IP Core is a 10/100 Media Access Controller (MAC). 1: 18. Specify options for processing the IP core files in other EDA tools. Advanced QoS features allow the most timing critical 800G Ethernet FPGA IP Core Solution. E-tiles include four instances of the Ethernet Hard IP, which in turn supports up to four multi-lane Ethernet MAC stacks, or 24 channels of single-lane The 100B ethernet IP core will put the complete 802. Implementation The MAC is the portion of ethernet core that handles the CSMA/CD protocol for transmission and reception of frames. 0, supporting cross-platform (Linux/Windows). The dual-mode 100Gbps/40Gbps Ethernet IP solution offers a fully integrated IEEE802. Ethernet and TSN will play a key role in the Industrial IoT and Industry 4. 27 Latest document on the web: PDF | HTML For release notes for the Low Latency 40-Gbps Ethernet IP core for software releases v16. 3-2012 Backplane Ethernet Standard. The protocol is constantly being improved so as to increase the efficiency and speed of data transmission over larger Specify parameters defining the IP core functionality, port configurations, and device-specific features. The IP core configures the transceivers to implement the relevant specification for your IP core variation. The AXI Ethernet Lite MAC supports the IEEE Std. It is minimal implementation of complete RFC compliant UDP/IP stack. The PRBS block generates the pseudo-random data. Ultra Low Latency Ethernet FPGA IP Core. 03. Since the transmitted data can be delivered within the set time according to the priority, it is expected to be used in industrial equipment and in-vehicle networks that require precise control. This includes transceiver instances and physical interface I/O logic. As an example, targeted devices are AMD Zynq 7000 SoC and Zynq Ultrascale+ MPSoC. To find out how to purchase the Tri-speed Ethernet MAC IP core, please contact your local Lattice Sales Office. H-Tile Hard IP The Reduced Media-Independent Interface (RMII) is used to interface Ethernet IP core on FPGA with the Ethernet PHY chip. 3 IEEE standards are met while transmitting a frame of data over Ethernet. About the LL 40GbE IP Core. 5G Ethernet PCS/PMA or serial gigabit media independent interface (SGMII) cores. It supports Ethernet bridging according to the IEEE 802. AMD Website Accessibility Statement. Ethernet/IP client library for Go inspired by pylogix that aims to be easy to use. The core is aimed to be used for 10 G Ethernet in both optic and metallic version (64bit XGMII internal interface). 0 Arria 10 Edition 2. idle:空闲状态，start为高进入make_ip状态。 make_ip:生成ip数据包，进入make_sum状态。 make_sum:计算ip数据包的首部校验和，计算完毕进入send_pre状态。 send_pre:发送7个前导码和1个开始码。然后进入send_mac状态。 send_mac:发送目的mac，源mac和ip数据包类型，然后进入send_header状态。 All IP cores are included with the Efinity IP Manager except for early access IP cores and the RISC-V SDK. The Ethernet cores implement an efficient architecture to achieve best in class resource utilization and performance numbers for targeting the complete 10M/100M/1G Managed Ethernet Switch IP Core. To use this feature, user must set the reference Triple Speed Ethernet IP Core v14. The TSN Ethernet IP core TSN-EP eases the integration of devices into networks complying with the TSN standards. One interesting thing to do with this design would be to add an IP core to implement the full TCP/IP stack. 5 Gbps Ethernet PCS IP core implements the state machine functions for the physical coding sublayer (PCS) described in the IEEE 802. 15. The MAC client side interface for the 50G Ethernet IP core is a 128-bit Avalon Streaming (Avalon-ST) interface. The MAC client side interface for The Lattice Semiconductor 10 Gb Ethernet MAC IP Core supports the ability to transmit and receive data between a host processor and an Ethernet network. Verify the functionality, size, and speed of the IP core quickly and easily. 1CB. EtherNet/IP (IP = Industrial Protocol) [1] is an industrial network protocol that adapts the Common Industrial Protocol (CIP) to standard Ethernet. Interfaces and Signals 2. 18. 78125 Gbps transceivers. Portable to any ASIC or FPGA technology. Triple-Speed Ethernet Stratix® 10 Intel® FPGA IP Design Example User Guide Triple Speed Ethernet IP Core v14. Date 5/08/2017. Public. 19. It also features a packet based CPU port which can be used to both send and receive ethernet frames to/from the switching IP. It connects to the Ethernet PHY chip on one side and to the WISHBONE SoC bus on the other. The design implements a 1 GbE switching bar with cut-through capability. 3-2015 High Speed Ethernet Standard CAUI-4 specification. . 1 2. [2] EtherNet/IP is one of the leading industrial protocols in the United States and is widely used in a range of Implements a UDP/IP hardware protocol stack that enables high-speed communication over a LAN or a point-to-point connection. 4 IP Version: 1. Core Configuration 3. Transceiver Channel Datapath for PIPE 2. 4. 40 Gbps Ethernet is an industry standard and is compliant for media access control (MAC) and PHY (PCS+PMA) functions. 6) 2017. NET implementations Supports IO Scanner and Explicit Message Client functionality For Data Exchange with Ethernet/IP Devices. Since 1999, OpenCores is the most prominent online community for the development of gateware IP (Intellectual EtherNet/IP supports electronic data sheets (EDSs). The UDP/IP/Ethernet IP Core implements a versatile communication solution that allows data transfer via Ethernet using the UDP protocol without the need of a CPU or Ethernet stack. 5G BASE-X Physical Medium Attachment (PMA) or Serial Gigabit Media Independent Interface(SGMII). It could be that the core is on a ip address where we do not know the exact numbers. Native PHY IP Parameter Settings for PIPE 2. fPLL IP Parameter Core Settings for PIPE 2. 0 Subscribe Send Feedback UG-01008 | 2020. : Specifies the transceiver tile 800 Gigabit Ethernet IP . The IP core consists of three sub-modules for time synchronization, traffic shaping and low latency Ethernet MAC The 10G Ethernet IP core enables 1-step and 2-step 1588 hardware time stamping delivered through IP Integrator with 10GBASE-R. The Low Latency 50G Ethernet Intel® FPGA IP core implements the 25G & 50G Ethernet Specification, Schedule 3 from the 25 Gigabit Ethernet Consortium and the IEEE 802. 3ba compliant package for NIC (Network Interface Card) and Ethernet switching applications. 1Qav and 802. Two external 10/100/1000 Mbits/s ports are available beside an internal CPU port. Ultra low latency, easy system integration, and interoperability-proven at industry plug fests. Send HTTP POST request in . It incorporates a 10/100/1000-Mbps Ethernet media access controller (MAC) and an The 100GBASE-R4 Ethernet channel maps to four 25. 3 standard. TSN Ethernet switched/bridged endpoint controller IP core, implementing timing synchronization, traffic shaping, preemption, and redundancy features. The IP core includes an option to support unidirectional transport as defined in Clause 66 of the IEEE 802. A processor bus master and 32-bit scatter-gather DMA This IP core supports Lattice’s IP hardware evaluation capability, which makes it possible to generate the IP core and operate in hardware for a limited time (approximately four hours) without requiring an IP license. 1G/2. The transmit and receive data interface Ethernet specification. The goal of this paper is to survey available open-source Ethernet MAC IP cores, evaluate existing designs in terms of performance The TCPIP-1G/10G core implements a complete TCP/IP Hardware Protocol Stack. Resource Utilization 2. The 10GbE IP core consists of the 10-Gigabit Media Independent Interface (XGMII), which connects media access controllers (MACs) and Physical Layer devices (PHYs). This L3 Ethernet Switch/Router IP core is built around a shared buffer memory architecture providing wire-speed switching and routing on all ports without head of line blocking. Carrier Ethernet (CE) versions of each core are also available. In this section, we describe the IP and MPLS building blocks, dominated by Cisco, Juniper, and now with new vendors Alcatel-Lucent or Nokia and Arista. Supports being a client and a class 3 / class 1 server. CIP encompasses a comprehensive suite of messages core of this network topology is an interconnection of Ethernet Layer 2 and Layer 3 switches that, as previously mentioned, can accommodate an unlimited number of The 100GBASE-R4 Ethernet channel maps to four 25. In addition, although multiple variations are available from the parameter editor, this document refers to this product as a single IP core, because all variations are The Ethernet 1G/2. 0 and earlier, refer to the Low Latency 40- and 100-Gbps Ethernet MAC and PHY IP Core Release Notes. EtherNet/IP devices that support specific devices all have the same set of EtherNet/IP application objects. How to Implement PCI Express* (PIPE) in Arria 10 Transceivers 2. 6Tbps Ethernet applications Synopsys 1. 112G-ELR Serdes PAM4 PHY Enables reliable high-speed data transfer over backplane, DAC, chip-to-chip, and chip-to-module channels for HPC SoCs. There are EtherNet/IP application objects that have the data for your specific device. Support of Explicit Messaging and Implicit Messaging; Object Library with CIP-Definined Objects; Provides a simple way to access Ethernet/IP Devices without special knowledge about Table 22. It maps to two 25. Ethernet: 1G/10G/25G Switching Serial RapidIO IP Core Gen 2 v4. Reset 2. 6T. Send Feedback Ethernet specification. The 400Gbps Ethernet FPGA IP core solution offers a fully integrated IEEE802. MII Management signals to connect to the PHY Reset signals Get Gigabit Ethernet up and running the easy way. 1. 20. 10 Gigabit Ethernet Media Access Controller (10GEMAC) Xilinx provides a parameterizable LogiCORE™ IP solution for the 10 Gigabit per second (Gbps) Ethernet Media This tutorial describes file hierarchy, description of modules, core design considerations and constants regarding the Ethernet IP Core. There are lots of TCP/IP cores on the market but just don’t expect them to be cheap. H-Tile Hard IP for Ethernet Intel Stratix 10 FPGA IP Core v18. Learn more The 1G Ethernet switching IP supports up to 16 ports, where each port provides GMII native interface for Ethernet PHY devices. 3125 Gbps serial single channel PHY providing a This happens when changing the ip Adress of the ctrlX core. 5G PCS IP core is non-standard with respect to the IEEE specification. Low Latency 100G Ethernet Stratix® 10 FPGA IP Core Release Notes ===== UDP/IP Core for FPGAs (in VHDL) ===== Update date: February 9th, 2010 Build date: December 15th, 2009 Description ----- This is a VHDL implementation of a UDP/IP core that can be connected to the input and output ports of the Virtex-5 Ethernet MAC Local Link Wrapper and enable communication betweena a PC and a FPGA. Ethernet Toolkit Overview 10. If a release note is not available for a specific IP version, the IP has no changes in that version. The Ethernet cores implement an efficient architecture to achieve best in class resource utilization and performance numbers for targeting the complete The UDP/IP/Ethernet IP Core implements a versatile communication solution that allows data transfer via Ethernet using the UDP protocol without the need of a CPU or Ethernet stack. It peforms Frame Data Encapsulation and Decapsulation, Frame Transmission, and Frame Reception. 13. Our goal is to provide reliable, hardware accelerator capabilities for high end FPGAs that are cost effective and straightforward to implement into client’s projects, using a minimum of This L3 Ethernet Switch/Router IP core is built around a shared buffer memory architecture providing wire-speed switching and routing on all ports without head of line blocking. 1000BASE-X/SGMII PCS With Optional Embedded PMA 4. The Low Latency 100G Ethernet Intel FPGA IP core offers low round-trip latency and small size to implement the IEEE 802. The cores support all necessary protocols like ARP, ICMP, UDP, TCP, DHCP and more No processors or operating systems will be needed. 5G Ethernet Subsystem core is a soft Xilinx IP core for use with the Xilinx Vivado® Design Suite. NetFPGA-MAC-10G (nfmac10g) is a hardware IP core that implements an Ethernet Media Access Control for 10Gbps links, according This L3 Ethernet Switch/Router IP core is built around a shared buffer memory architecture providing wire-speed switching and routing on all ports without head of line blocking. Documentation. Functional Description 2. Very low latency, easy system integration, and interoperability-proven at industry plug fests. The IP supports various FECs and IEEE 1588 Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control F-Tile Low Latency 100G Ethernet Intel® FPGA IP User Guide Updated for Intel ® Quartus Prime Design Suite: 23. 1 release and beyond, two IP core user guides are available to document the Low Latency 40-Gbps Ethernet IP core and the Low Latency 100-Gbps Ethernet IP core Brand Name: Core i9 Triple-Speed Ethernet Intel FPGA IP User Guide Triple-Speed Ethernet Intel® FPGA IP User Guide. Triple-Speed Ethernet Intel® FPGA IP User Guide Archives 2. Note: The full product name, Low Latency 40-Gbps Ethernet MAC and PHY Intel® FPGA IP Function, is shortened to Low Latency (LL) 40 GbE (LL 40GbE) IP core in this document. To meet the quality, high-performance, and security demands of Ethernet SoCs, Synopsys delivers a complete IP solution consisting of configurable MAC & PCS controllers and silicon-proven 1G to 224G PHYs, MACsec security modules, verification The EtherNet/IP specification defines those objects. 3-2018 spec for 400Gbps, 800Gbps & 1. necessary to implement the Layer 2 protocol of the Ethernet The Ethernet IP Core is a MAC (Media Access Controller). Set the FPGA part and GTY Flexibilis Ethernet Switch (FES) is a triple-speed (10Mbps/100Mbps/1Gbps) Ethernet Layer-2 switch IP core compatible with IEEE 802. 0 2 2 10G Ethernet Overview Ethernet is a family of networking interface standards used in systems and applications across multiple The core of EtherNet/IP is the CIP which is also used in ControlNet, DeviceNet, and CompoNet. 3 Media Independent Interface (MII) to industry standard Physical Layer (PHY) devices and communicates to a processor via AXI4 or AXI4-Lite interface. go golang automation plc ethernetindustrialprotocol rockwell allen-bradley ethernet-ip cip controllogix compactlogix commonindustrialprotocol rockwell-automation. H-Tile Hard IP for Ethernet Intel Stratix 10 FPGA IP Core v20. 3 10G Base-R specification. Existing users of the 10GbE MAC IP core can migrate to the Low Latency Ethernet 10G MAC IP core with minimal modifications on the system. : * IEEE 802. Many of these modules have sub-modules. The Intel ® Low Latency 40-Gbps Ethernet (LL 40GbE) media access controller (MAC) and PHY Intel FPGA IP functions offer the lowest round-trip latency and smallest size The 800Gbps Ethernet IP solution offers a fully integrated Ethernet Technology Consortium (ETC) compliant solution for use in core networks, Ethernet switching and network interface card (NIC) applications. 02. Products Processors Accelerators Graphics Adaptive SoCs, FPGAs, & 2. To find out how to purchase the SGMII Ethernet IP core, please contact your local Lattice Sales Office. The following core issues are covered in this document: • Purpose of the function block • Parameterization • Data exchange with EtherNet/IP scanner based on SIMATIC scanner and EtherNet/IP is a best effort approach to achieve higher performance and lower jitter T2M-IP has a wide & diverse silicon Interface IP Core Portfolio, including GbE (10-100-1000 Base-T) PHY IP Core, includes USB, PCIe, Serial ATA, HDMI, Display Port, MIPI, DDR, 10/100/1000 Ethernet The next-generation Ethernet standard "IEEE 802. All these cores have been carefully "scraped" from opencores. This specification enables high-performance, cost-efficient, and scalable interconnects for data center networks with server to top-of-rack links that are The 1G Ethernet switching IP supports up to 16 ports, where each port provides GMII native interface for Ethernet PHY devices. 25G Ethernet Intel® Arria® 10 FPGA IP User Guide Archive 2. 25G Ethernet Intel® FPGA IP v19. 3-2010 40G Ethernet Standard. Low Latency E-Tile 40G Ethernet Intel® FPGA IP User On which is running the WebService. Date 6/11/2015. 5G Ethernet subsystem, AXI DMA, and AXI Interconnect IP cores. 3bj High Speed Ethernet Standard. Version. 1Qbu and 802. Hi, Dose anybody knows if it possible to implement Ethernet communication (10/100 MHz) on FPGA (lets say Cyclone 3)? Is there any Altera proven VHDL IP core for that? (I don’t what to write the TCP IP/ UDP code- I only need the interface with the Ethernet). Debugging the Link 9. Reset 6. 0 2. motive applications. ID 683158. 3-2010 40G Ethernet Standard and includes options to support unidirectional transport as defined in Clause 66 of the IEEE 802. Advanced QoS features allow the most timing critical The Ethernet IP Core uses three types of signals to connect to media: WISHBONE signals to connect to the Host Interface. The quad-port, Layer-2 5. • Gigabit media-independent interface (GMII) The Low Latency E-Tile 40G Ethernet (LL E-Tile 40GbE) Intel® FPGA IP is used in multiple variants of the Stratix® 10 and Agilex™ 7 device families. 3ba-2010 High-Speed Ethernet Standard, available on the IEEE website (www. Our third-party partner (CompanionCore) IP cores crafts specialized IP cores that support targeted market requirements. Then during transmit, when TX_SOP=H, the user will place 802. The IP core implements the IEEE 802. Stratix® 10 Low Latency 40GbE IP Core User Guide Archives 11. I need to learn about Xilinx Ethernet IP core and to execute example design using microblaze and Ethernet. This library was developed in . Getting Started 4. The Low Latency Ethernet 10G MAC IP core is an enhanced version of the 10GbE MAC IP core and it provides lower resources and lower latency with an improved MAC functionality. 5G SGMII is available in Versal™ adaptive SoC, Kintex™ UltraScale+™, Virtex™ UltraScale+, Zynq™ UltraScale+, 1G/2. 40G Ethernet IP Core . 5. The IP core includes options to support unidirectional transport as defined in Clause 66 of the IEEE 802. 04. MES is a multi-port, multi-rate managed ethernet switch with a rich set of layer-2 configurable features, both at synthesis & runtime, which allows system vendors to build advanced layer-2 switch systems. 1 Host Interface Ports The table below contains the common ports connecting the Ethernet IP Core to the Host Ethernet specification. 1 November 2017; Description Impact; Added support for the Stratix® 10, Cyclone® 10 GX, and Cyclone® 10 LP device families. In addition, although multiple variations are available from the parameter editor, this document refers to this product as a single IP core, because all variations are The Ethernet Media Access Controller (MAC) core can be configured to operate in either the Gigabit mode (1000 Mbits/sec data rate) or the Fast Ethernet mode (10/100 Mbits/sec data rate). If an IP core version is not listed, the user guide for the previous IP core version applies. 1Qci and 802. Getting Started 2. exe > ipconfig: What I would like to achieve is automatic IP configuration of Kestrel, like: . View More See Less. MES has been designed to address the maximum throughput using the This IP core supports Lattice’s IP hardware evaluation capability, which makes it possible to generate the IP core and operate in hardware for a limited time (approximately four hours) without requiring an IP license. The FPGA serial transceivers are compliant with the IEEE 802. If you plan to use IP Cores from OpenCores in your next design and need support, or if you require professional advise on your next challenging IP Core development, don’t hesitate to contact us. 16. The Triple-Speed Ethernet FPGA IP core consists of a 10/100/1000 Mbps Ethernet media access control (MAC) and physical coding sublayer (PCS) Intellectual Property (IP). com. Comcores 1G Ethernet Switch IP core is a silicon agnostic Open source 10 Gigabit Ethernet MAC core compatible with Xilinx's non-free 10GMAC - forconesi/nfmac10g. 10/100/1000 Ethernet MAC 4. 29 Latest document on the web: PDF | HTML Dual Mode 40/100Gig Ethernet MAC & PCS IP Core - Xilinx/Altera FPGAs & ASIC/SOC. 10 Gigabit Ethernet Media Access Controller (10GEMAC) Xilinx provides a parameterizable LogiCORE™ IP solution for the 10 Gigabit per second (Gbps) Ethernet Media Access Controller function used to interface to Physical Layer devices in a 10Gbps Ethernet (10GE) system. The UDP/IPv4 for 10 G Ethernet IP core, implements mandatory parts of UDP, IPv4 and Ethernet (MAC) protocols. 3bs compliant solution for use in core networks, Ethernet switching and network interface card (NIC) applications. Stratix® 10 Low Latency 100G Ethernet IP Core v17. The IP core has been chosen by Flextronics Semiconductor, proven in FPGA technology and integrated into a Flextronics' design. 3-2002 specifications. GiGE / Intel® Stratix® 10 Low Latency 100-Gbps Ethernet IP Core User Guide 18. The MPLS router comes in two forms: PE—Provider Edge, this is the most important MPLS router, it is where the MPLS demarc begins. We would like to implement PTP (Precision Time Protocol) on the board. 1D. I found on codeplex (https: What is the difference between . Getting Started Overview 3. 1: Ethernet specification. Development Steps for the Design Example. Payload—you can specify the data type to be incremental or pseudo-random. 3 Clause 49, IEEE 802. Please confirm. View Details. NET Core 2. 26 101 Innovation Drive San Jose, CA 95134 www. The CE The EtherNet/IP specification defines those objects. 1br, and * optionally the 802. In preparation for both running the testbench and using the MAC in a project, Ethernet IP cores are used widely in MCU, SoC, Network Chips etc. 78125 Gbps links. org). Design Example The Low Latency 50G Ethernet Intel® FPGA IP core implements the 25G & 50G Ethernet Specification, Schedule 3 from the 25 Gigabit Ethernet Consortium and the IEEE 802. Contribute to lewiz-support/LMAC_CORE3 development by creating an account on GitHub. Subscribe Ethernet (SyncE)-compliant jitter attenuation, and on-board Microsemi VSC8575 PHY. The Ethernet cores implement an efficient architecture to achieve best in class resource The IP supports multiple Ethernet Phyters interfaces 10G TSN Switch IP can be optimally implemented on an AMD SoC devices. The Ethernet IP Core is a 10/100 Media Access Controller (MAC). Multi-Gigabit Forwarding Engine The 10 Gigabit Ethernet IP core is designed for applications such as integrated networking devices, host bus adapters, PCI-Express Ethernet controllers, and Ethernet adapter cards. --- Quote End --- Yes. V-Series Transceiver PHY IP Core User Guide Subscribe Send Feedback UG-01080 2022. Reference Clocks - The 10 Gb Ethernet PCS IP Core provides other sources of reference clocks and can be used for dynamic switching. XAUI PHY IP Core 8. A newer version of this document is available. The core is designed to work with the latest Virtex®-6, Virtex-5 and Compatible with USXGMII (Universal Serial 10GE Media Independent Interface) or 10GBASE-R PHY interfaces throughout an internal AXI-S based connection to AMD LogiCORE™ USXGMII IP core and LogiCORE™ 10G/25G Ethernet Subsystem IP core respectively; Time Sensitive Networking (TSN) TSN features can be enabled/disabled independently EtherNet/IP is a member of a family of networks that implements the Common Industrial Protocol (CIP™) at its upper layers. 6T Ethernet/FiberChannel/FlexO Core Configurable Ethernet controllers, compliant with the IEEE and consortium specifications for a range of applications 224G Ethernet PHY IP for TSMC N3E The Low Latency E-Tile 40G Ethernet (LL E-Tile 40GbE) Intel® FPGA IP is used in multiple variants of the Stratix® 10 and Agilex™ 7 device families. altera. : In versions 17. Backplane Ethernet 10GBASE-KR PHY IP Core 5. We are experts in gateware design and engineering based on the OpenCores technology, and have extensive experience in all parts of FPGA development. Overview. Interfaces and Signal Descriptions 7. microScan3: One impressive product, leaves a lasting impression microScan3 Core – EtherNet/IP™ ADVANTAGES AT A GLANCE The innovative safeHDDM® scanning technology sets new stan- dards for safety laser scanners. The block diagram of the TSMAC IP core is shown in Figure 2-1. Supported PIPE Features 2. 1Q-2018 standard and implements the essential TSN timing synchronization and traffic-shaping protocols,i. Online Version. These CompanionCores supplement our extensive suite of DirectCore IP cores With the installation of Codesys fieldbus communication add-on package for ctrlX PLC, ctrlX CORE supports Ethernet/IP and PROFINET connections to 3rd party P We provide the easiest way to connect a FPGA to an Ethernet network. 2 1. Version 17. The Triple-Speed Ethernet Intel® FPGA IP is a configurable intellectual property (IP) core that complies with the IEEE 802. This IP is offered in MAC-only mode or in MAC+PHY mode. Low Latency E-Tile 40G Ethernet IP Core Parameters 3. The Gigabit Ethernet MAC IP core consists of two configurable FIFOs on both transmit and receive sides to handle the application’s latency during frame transmission and reception. Buy Now. The Lattice 2. We are using the KSZ 9031 PHY. Each of the infrastructure cores can also be added directly to a Block Design (outside of AXI Ethernet) or selected directly from the Vivado IP 1 About This IP Core The Intel® FPGA Triple-Speed Ethernet IP core is a configurable intellectual property (IP) core that complies with the IEEE 802. The IP core consists of three sub-modules for time synchronization, traffic shaping and low latency Ethernet MAC I have a I/O remote device (EIP-2017) with 8 analog inputs and it implements EtherNet/IP protocol for reading I/O values. Timestamp Options 3. 2 Ethernet IP Core Modules The Ethernet MAC IP Core consists of seven main modules: WISHBONE interface, transmit module, receive module, control module, MII module, status module and register module. This allows the vendor to allow the controller of choice to integrate the device since the EDS tells the controller who and what Ethernet/IP compatible library for . Interlaken PHY IP Core 9. Simulate the behavior of a licensed IP core in your system. ieee. Triple-Speed Ethernet Intel FPGA IP User Guide Updated for Intel ® Quartus Prime Design Suite: 17. Note: Refer to The 1G Ethernet Switch IP is a switching core that is a highly configurable and size-optimized implementation of a non-blocking crossbar switch that allows continuous transfers between up The reference community for Free and Open Source gateware IP cores. The transceiver instances, IOBs and supporting logic are still delivered The 25Gbps 64-bit Ethernet IP solution offers a fully integrated IEEE P802. NET Core and . 7. 0. For the 16. 3by 25Gb Ethernet draft. Using the core currently requires an installation of Xilinx ISE 14. For example, an EtherNet/IP drive device has a motor object. The Synopsys 1. I am having Kintex 705 custom board and Ultra board. 1 Subscribe Send Feedback UG-01008 | 2019. Module and submodule operations are described seperately in this tutorial. I am still using a Generic Ethernet/Ip Adapter module in my RSLogix project. 5. --- Quote Start --- Is there any Altera proven VHDL IP core for that? (I don’t what to write the TCP IP/ UDP code- I only need the interface with the Ethernet). Low Latency Ethernet FPGA IP Core. This IP core implements the Physical Coding Sublayer (PCS) and Physical Medium Attachment (PMA) functionality following the IEEE 802. Triple Speed Ethernet MAC. 10GBASE-R PHY IP Core 4. Therefore, this 2. This standard organizes networked devices as a collection of objects. The MAC client side Our board is based on the Arria 10 FPGA. As shown in the figure below, the 25Gbps Ethernet IP includes: 25Gbps MAC core with AXI-4 Streaming or Avalon Streaming user interface The Specialist IP Core Provider Explore the Company. The number of ports 2-16 is configurable at compile time. 2 or later, IP cores have a new IP versioning scheme. 2. Hitek Systems - 800G Ethernet FPGA IP Core Solution. Low Latency E-Tile 40G Ethernet Intel® FPGA IP User A low latency 10G Ethernet MAC/PCS, written in SystemVerilog and tested with pyuvm/cocotb An integrated low latency 10G Ethernet core, with MAC/PCS and GTY wrapper/IP for Xilinx UltraScale+ An example design containing packet latency measurement in loopback Generate GTY IP. For non commercial users we have fully functional cores free of charge. The MAC provides cut-through frame processing to optimize latency, supports full wire line speed with a 64-byte frame length and back-to-back or mixed length traffic with no dropped packets. 10G Low Latency IP Cores. In PolarFire devices, 10/100/1000 Mbps (1G) Ethernet is implemented using the CoreTSE soft IP media access control (MAC) core. 1G/10Gbps Ethernet PHY IP Core 6. This work should help designers to select an appropriate open-source Ethernet MAC for an FPGA design and shows possible pitfalls and things to pay attention when using an open-source IP core in The Lattice Semiconductor 10G Ethernet (GbE) IP core supports the ability to transmit and receive data between a host processor and an Ethernet network. MII Management signals to connect to the PHY Reset signals (for resetting different parts of the Ethernet IP Core 2. 1 TSN (Time-Sensitive Networking)" is a protocol for achieving real-time performance. Would the IP Core interface with the KSZ9031 PHY in RGMII mode? Are there any other issues we should be concerned about with this implementation? Thank you Dose anybody knows if it possible to implement Ethernet communication (10/100 MHz) on FPGA (lets say Cyclone 3)? --- Quote End --- Yes. Custom PHY IP Core 1. ID 683402. Please note that generating a bitstream may be prevented or the bitstream may have Table 8. 0: 17. It is also ready to be used with PHYs that Ethernet IP cores in Vivado have been updated to be delivered as a core block containing both encrypted HDL and GT instances. The TSN Ethernet IP core TSN-SE provides TSN switched endpoint func-tionality and eases the integration of devices into networks complying with the TSN standards. The Low Latency 100G Ethernet Intel FPGA IP is used in multiple variants of the Intel® Stratix® 10 device family. Control, Status, and Statistics Register Descriptions 8. A high performance (HP) port is used in this design for fast access to the PS-DDR memory. 9. Stratix® 10 H-Tile Hard IP for Ethernet IP Core Release Notes. The core is designed to work with the latest Virtex®-6, Virtex-5 and Ethernet/IP compatible library for . It offers dynamic allocation of packet buffers per port and priority to avoid starvation due to over-allocation. 2 Core and Metro Network Elements—IP/MPLS Routers. 17. Low Latency 100G Ethernet Stratix® 10 FPGA IP Core v18. 1 onwards. 3-2012 Ethernet Standard and to support the IEEE 802. Contribute to freecores/ethmac development by creating an account on GitHub. However, it is important for you The AXI Ethernet IP core represents a hierarchical design block containing multiple LogiCORE™ IP instances (infrastructure cores) that become configured and connected during the system design session. The previous 'core block' level is now the top level of the core. So there's no possability yet to go online over USB on the core. This IP function enables FPGAs to interface to an external Ethernet PHY device, which interfaces to the Ethernet network. 25G Ethernet IP Core v17. Ethernet MAC IP Core for 100G/50G/40G/25G/10Gbps. The XGMAC provides features that include transmit and receive message data encapsulation, framing The Gigabit Ethernet Core IP supports half-duplex mode at 10/100 Mbps and full-duplex mode at 10/100/1000 Mbps. The major functional modules are: 2. The control interface to internal registers is via a 32-bit AXI Lite Interface. E-Tile Hard IP for Ethernet Intel FPGA IP Parameters 2. 3, April 2015 7 Tri-Speed Ethernet MAC User’s Guide The TSMAC IP core is a fully synchronous machine composed of Transmit and Receive MAC sections that operate independently to support full duplex operation. 100G Ethernet IP Core. EtherNet/IP stack for adapter devices (connection target); supports multiple I/O and explicit connections; includes features and objects required by IP Core Tools; FPGA Design Tools ; SPLD/CPLDs; High-Speed Networking and Video; View All; ARCNET; ASA Motion Link; Data and Video Transceivers; High-Speed Communications; and a low-latency Ethernet MAC. The 10 Gigabit Ethernet PCS/PMA (10GBASE-R) is a no charge LogiCORE™ which provides a XGMII interface to a 10 Gigabit Ethernet MAC and implements a 10. 3. 8. D&R provides a directory of Ethernet PHY IP Core. These devices are only available in Quartus® Prime Pro Edition software version 17. The Stratix® 10 Low Latency 40-Gbps Ethernet IP core implements the IEEE 802. IP Core Verification 2. The Xilinx® AXI Ethernet Subsystem implements a tri-mode (10/100/1000 Mb/s) Ethernet MAC or a 10/100 Mb/s Ethernet MAC. IP versions are the same as the Quartus® Prime Design Suite software versions up to v19. 22. The TSN-SW implements a highly flexible, low-latency TSN Ethernet switch. v17. This allows us to provide an optimized custom IP core within days of receiving customer requirements. 2. Optionally, non-UDP communication is supported for management Thus, the usage of an open-source Ethernet MAC IP core can be a solution to overcome the limitations of commercial IP cores mentioned previously which finally was the motivation for the authors of this work. The Media Access Layer converts the packets into stream of data to be sent while the This IP core supports Lattice’s IP hardware evaluation capability, which makes it possible to generate the IP core and operate in hardware for a limited time (approximately four hours) without requiring an IP license. The XGMAC operates at a speed of 10 Gbps in full duplex mode only. Here is a list of some of them: Missing Link Electronics TCP/UDP/IP Network Protocol Accelerator; Enyx TCP/IP and MAC Ethernet IP cores 10 Gigabit Ethernet Media Access Controller (10GEMAC) Xilinx provides a parameterizable LogiCORE™ IP solution for the 10 Gigabit per second (Gbps) Ethernet Media Access Controller function used to interface to Physical Layer devices in a 10Gbps Ethernet (10GE) system. 0 Online Version Send Feedback 792946 2023. FIFO Options 3. Advanced QoS features allow the most timing critical 10M/100M/1G Managed Ethernet Switch IP Core. Note that the IEEE specification describes a PCS that operates at 1Gbps. 1Qbv, * 802. The MAC client side interface for the Stratix® A Media Access Controller compatible with the 10/100 Mbps IEEE 802. The 800Gbps Ethernet IP solution offers a fully integrated Ethernet Technology Consortium (ETC) compliant solution for use in core networks, Ethernet switching and network interface card (NIC) applications. Register Descriptions 2. Document Revision History for the E-Tile Hard IP for Ethernet Intel FPGA IP Core Allows the Configuration of the IP and Generation of a Netlist and Simulation File - The HiGig™ / Ethernet MAC IP core is a user-configurable IP core, which allows the configuration of the IP and generation of a netlist and simulation file for use in designs. I don't know to how to initiate my work. The MAC client side Driver/library to communicate with Rockwell PLCs (ControlLogix family) using CIP protocol over Ethernet/IP. The 50G Ethernet Intel® FPGA IP core implements the 25G & 50G Ethernet Specification, Draft 1. Introduction. An external PHY is needed for the complete Ethernet solution. This IP allows the creation of a 1G to 10G configuration that allows dynamic 1. 1Qav & IEEE The Triple-Speed Ethernet IP core pads undersized packets to meet the minimum required length, 64 bytes. 1 1. The Ethernet cores implement an efficient architecture to achieve best The Lattice Semiconductor 10G Ethernet (GbE) IP core supports the ability to transmit and receive data between a host processor and an Ethernet network. org using a quite long python script available here . 6T Ethernet MAC IP is based on IEEE 802. It provides time-sensitive networking for full duplex point-to-point Ethernet communication. Designed for standalone operation, the core is ideal for offloading the host processor from the demanding task of UDP/IP encapsulation and enables media streaming with speeds up to 100Gbps even in processor-less SoC designs. xyxbgoldzqjlfsgorwhcflcjliphijfogikzoictpslojnsyuzkf