Gmii to rgmii xilinx download

The rgmii standard achieves this by reducing parallel data bus width and through double data rate ddr. The minimum hardware is a virtex5 lxt or fxt part and a suitable ethernet interface gmii is used on the ml505ml507 but can be changed to sgmii or rgmii. If would be helpful if can provide me with some insight or documentation, or just tell me the modificationschanges in the above steps that need to be done. Special clock frequency requirement for gmiirgmiisgmii interface. Max24287 1gbps paralleltoserial mii converter general description the max24287 is a flexible, lowcost ethernet interface conversion ic. Figure top xref 3 sgmii xilinx fpga ethernet mac core switch or router 10 mbps, phy side gmii to the ethernet basex pcspma or sgmii core from xilinx. This clock is derived from the user supplied external clock using the clock module or pll. These constraints should be placed in an ucf at the toplevel of the design. Ting kao translated to verilog by nigel gulstone description.

The principle objective of rgmii is to reduce the number of pins from 22 down to 12 in. Xilinx provides a gmii to rgmii logicore for connecting to the zynq7000 integrated ethernet mac. Hi, i am trying to implement the ethernet communication by using zynq processor. Although the hps emac supports rgmii, you can route the emac to the fpga in order to reuse the hps io for other peripherals. If you are using the ethernet fmc, the phy is the marvell 88e1510, and the ethernet mac is inside the fpga. Xilinx ug533 getting started with the virtex6 fpga ml605. Sending udp packets at 1gbs over rgmii project vault. Using axi ethernet subsystem and gmiitorgmii in a multi.

Figure top xref 2 gmiimii or rgmii xilinx fpga ethernet mac switch or, phy side gmii to the ethernet basex pcspma or sgmii core from xilinx. Rgmii constraints basex ds297 sgmii specification ieee switch sgmii mii gmii rgmii phy xilinx spartan ucf file 6 sgmii xilinx efditemacproj text. The xilinx logicore ip gigabit media independent interface gmii to reduced gigabit media independent interface rgmii design provides the rgmii between rgmiicompliant ethernet physical media devices phy and the embedded gigabit ethernet controller in the zynq7000 devices. The exact timing follows the interface of firstwordfallthrough fifos generated by the xilinx core generator but is generally not different from a. This code also use a module that to operate i2c switch, pca9548a, loaded on the kc705. Download the xilinx documentation navigator from the design tools tab on. When the emac is routed into the fpga it is exposed as a miigmii interface so this design also adapts the exposed interface to rgmii before it is.

Xilinx ug144 constraints when implementing an external rgmii. Although the hps emac supports reduced gigabit media independent interface rgmii, you can route the emac to the fpga in order to reuse the hps io for other peripherals. Ksz9031rxx feature rgmii timing supports onchip delay according to rgmii version 2. I am not fully understanding how to utilize the gmii to rgmii v3. The zynq7000 soc zc702 evaluation kit includes all the basic components of hardware, design tools, ip, and preverified reference designs including a targeted design, enabling a complete embedded processing platform. Introduction core overview reduced gigabit media independent interface rgmii is a standard interface, which helps in reducing the number of. It is used for gigabit ethernet but can also carry 10100 mbits ethernet. The module takes the data and control latched on the rising and falling edge of the clock and unfold it to the standard gmii interface. The xilinx logicore ip gigabit media independent interface gmii to reduced gigabit media independent interface rgmii design provides the rgmii between rgmii compliant ethernet physical media devices phy and the embedded gigabit ethernet controller in the zynq7000 devices. Personally i think adding a phy layer in this application would be a huge overkill. Xilinx has an appnote on how to convert gmii to rgmii. To enable these 2 hidden components, please perform the following steps. Xilinx xapp692 using the rgmii to interface with the.

Cpus single cpu ps features ddr, eth0 pl cores custom gmii synchronization pcore boardstools zc702. The rgmii is intended to be an alternative to the ieee802. It is focused on equipments that requires basic ieee 1588 functionality using the minimum resources. The serial gigabit mediaindependent interface sgmii is a variant of mii, a standard interface used to connect an ethernet mac block to a phy. Latticescmarvell serialgmii sgmii lattice semiconductor physical layer interoperability and phase shift plls, numerous dlls and dynamic glitch free clock mux that are required in todays highend system designs. Constraint rgmii interface of triple speed ethernet with. Ethernet physical media devices phy and the gigabit ethernet controller. The rgmii interface has been designed in accordance with the standards and specifications agreed in the. Known issues xilinx answer 32629 logicore trimode ethernet mac core throughput in halfduplex gmii and rgmii modes. It provides a simple to use interface to the user logic, and supports the common media independent interfaces mii, rmii, gmii and rgmii. This page contains resource utilization data for several configurations of this ip core. When the virtex4, virtex5, or virtex6 fpga embedded trimode ethernet mac is configured for mii, gmii, or rgmii operation at 10 mbps, mdio transactions errors can occur. Ksz9031mxx feature gmii mii standard interface with 3.

The basexsgmii phy and the gth transceiver are a part of the axi ethernet core for 1g pl ethernet. Hop on to get the meaning of rgmii acronym slang abbreviation. The tsn end node ip core from nettimelogic is a standalone time sensitive networking tsn single port end. Locallink interface client interface gmiirgmii xilinx fpga 10 mbps, 1. The gmii to rgmii ip core provides the rgmii between ethernet. Ive used gmii and rgmii phy interfaces so far and boards with xilinx, altera, and lattice fpgas. Constraints when implementing an external rgmii, rgmii iob constraints, rgmii input setuphold timing, rgmii ddr constraints, spartan3, spartan3e, spartan3a, and virtex4 devices, virtex5 devices, 8 6. Apr 26, 2017 the data includes all ethernet mac headers destination address, source address, and lengthtype in the exact same order as defined in the standard, but not the frame check sequence trailer. Special clock frequency requirement for gmii rgmii sgmii interface. In this code use the module that converts the interface of at93c46, used by sitcp, to eeprom m24c08 of kc705. Cr682012 timing issues were observed during hardware validation and a fix has been provided for use in this answer record. Xilinx answer 30644 when using rgmii and spartan3 family devices, the example design has a missing period contraint.

The mii was standardised a long time ago and supports 100mbitsec speeds. I understand that you need an external phy that you provide i have one ordered. The rgmii interface is the physical connection between the ethernet phy and the ethernet mac. With its 8bit wide transmit and receive interfaces running at 125 mhz, the ip core is able to operate at full 1 gbitsec wire speed. Might be a stupid question, but i want to know why is the gmii to rgmii core not. Implementing gmii interface on c5 nxp semiconductors.

Other phy interfaces can be implemented by using appropriate shim logic in the pl. The question is to interface a avago sgmii transceiver with a fpga with rgmii interface only. The reduced gigabit media independent interface rgmii has become a widely used alternative to the gigabit media independent interface gmii by offering lower pin count which enables board space, and cost, savings. Rgmii interface timing considerations ethernet fmc.

The reduced gigabit media independent interface rgmii module provides an rgmii interface to an existing ethernet mac design with a gmii or tbi interface, for example the gigabit ethernet mac gem available from cadence design foundry. All latticesc devices also feature up to 32 channels of embedded serdes with associated physical coding sublayer pcs logic. By the way, i have an internal project called phynet that lets me communicate between a number of fpga boards through a standard gigabit switch and theres not a mac amongst them. I have a question seeking to clarify exactly what happens during a gmii exchange between mac and phy. Independent interface rgmii core provides the rgmii between rgmiicompliant. Ive found an appnote where the problem was mentioned 9. Ps and plbased 1g10g ethernet solution application note. In quartus, go to toolsoptionsinternet connectivitytalkback optionscheck enable sending talkback data to altera. The fifteenrface is signal gmii inte converted into sixsignal rgmii interface by using both edges of the clock. The xilinx ml505 and ml507 development boards are the target boards in this example. Xilinx gmiitorgmii ip core semiconductor ip silicon ip. I need to send data through the onboard ethernet on zedboard.

This article lists the known issues for the current released version of the gmii to rgmii ip. The principle objective of rgmii is to reduce the number of pins from 22 down to 12 in a costeffective and technologyindependent manner. The principle objective is to reduce the number of pins required to interconnect the mac and the phy from a maximum of 28 pins tbi to 12 pins in a cost effective and technology independent manner. A very reduced pincount version called sgmii is also available s for serial which. The rgmii interface is a dual data rate ddr interface that consists of a transmit path, from fpga to phy, and a receive path, from phy to fpga. Enclustra fpga solutions udpip ethernet udpip ethernet. When gmii rgmii sgmii interfaces are used, the fpga requires an exact 125 mhz clock to drive the mbitss communication. This design demonstrates how you can route the hps emac into the fpga in order to use fpga io for the interface. Altera hps emac interface splitter core ip and altera gmii to rgmii adapter core ip are hidden in quartus 14. The xilinx logicore ip gigabit media independent interface gmii to reduced gigabit media independent interface rgmii design provides the rgmii.

Gmiimii, commercial temperature, gold wire bonding. The psgem3 is always tied to the ti rgmii phy on the zcu102 evaluation board. So, i guess when the op said the parts are connected backtoback he omitted this little detail. Reduced gigabit media independent interface rgmii technical. Basically you just need a layer of external ddr registers with some simple logic. Rgmii to sgmii interface interface forum interface. Miigmii hardware io setup for xilinx spartan 6 family fpgas basic mediaindependent interface management miim interface support that. Can you please download our partners example design for. The parallel interface can be configured for gmii, rgmii, tbi, rtbi, or 10100 mii, while the serial interface can be configured for. Xilinx answer 33195 virtex6 fpga embedded trimode ethernet mac wrapper v1. I am currently trying to implement an ethernet driven algorithm in the zedboard. So, is there any rgmii to gmii ip core or gmii to mii ip core present.

Constraint rgmii interface of triple speed ethernet with the. The gmii gigabit media independent interface is an ethernet interface standard and rgmii reduced gigabit media independent interface is intended to be an alternative to gmii. The board will interface with a gige vision camera and i want to pull ethernet packets directly into the programmable logic. Gmii gigabit media independent interface is an ethernet interface standard, and rgmii reduced gigabit media independent interface is intended to be an alternative to gmii. Mii media independent interface 100 mbps gmii gigabit mii 1 gbps 24 pins 8tx 8rx rgmii reduced gmii 1 gbps 12 pins 4tx 4rx sgmii serial gmii 1 gbps 8 pins 2tx 2rx xaui xgmii extender 10 gbps xy pins 8tx 8rx spi4.

Rgmii rx data from phy is converted gmii rx data for the mac. Xilinx provides a gmii to rgmii logicore for connecting to the zynq7000 integrated ethernet mac the xilinx logicore ip gigabit media independent interface gmii to reduced gigabit. The principle objective of rgmii is to reduce the number of pins from 22 down to 12 in a costeffective and technology. High quality rtl8211 ethernet module m udp automatic. After extensive searching, i have been unable to find a source for where rgmii came from and whether a standard exists, ive just been able to find manufacturers specs for the. A version using less pins is also available, rmii r for reduced. Chapter 2 product specification figure 21 illustrates the connection of the gigabit ethernet controller in the zynq7000 soc to the gmii to rgmii core. Rgmii receiver logic, spartan3, spartan3e, spartan3a and spartan3a dsp devices, figure 77. Implementing gmii interface on c5 generation date 12201 revision 1. Download the xilinx documentation navigator from the downloads. This core can be used in all three modes of operation10. When gmiirgmiisgmii interfaces are used, the fpga requires an exact 125 mhz clock to drive the mbitss communication. Im implementing an ethernet system on a xilinx fpga, and ive been reading ieee 802. Design constraints the gmii to rgmii ip requires design constraints to guarantee performance.

Configures the phy autonegotiation to use fullduplex modes only. This core can switch dynamically between the three different speed modes of operation 10100 mbs. Xilinx gmiitorgmii converter driver device tree bindingsthe gigabit media independent interface gmii to reduced gigabit media. Unlike gmii, the transmit clock signal is always provided by the mac on the txc line, rather than being provided by the phy for 10100 mbits operation and by the mac at mbs. The xilinx synthesis tool is used to synthesize the gmii to rgmii core. The data is separated into a table per device family. Download the xilinx documentation navigator from the design tools. Gigabit ethernet transceiver with rgmii support author. When the emac is routed into the fpga it is exposed as a miigmii interface so this design also adapts the exposed interface to rgmii before it is connected to fpga io. The gmii to rgmii ip is designed for use with the gigabit ethernet hard.

Dec 08, 2015 i went through using axi ethernet subsystem and gmiitorgmii in a multiport ethernet design. The rgmii meaning is reduced gigabit media independent interface. So, i guess when the op said the parts are connected back to back he omitted this little detail. For gigabit speeds, the gmii g for gigabit interface is used, with a reduced pincount version called rgmii. External rgmii receiver logic for virtex4 devices, 1gigabit ethernet mac core, dcm clkin clk0 fb. The example of the constraint text shown in figure 5 is based on the port names of the gmii to rgmii core. This core is meant to connect a gmii compliant mac core to a rgmii compliant phy. Gmii to rgmii ip can be used to provide an rgmii interface using the pl. Figure top xref 2 gmii mii or rgmii xilinx fpga ethernet mac switch or, phy side gmii to the ethernet basex pcspma or sgmii core from xilinx.