A regulator design for a serdes phy of a high speed serial. The ethernet basex pcspma or sgmii ip core is a fullyverified solution that. Besides, sgmiibaset is often used with sfp pluggable transceivers which have an i2c interface instead of mdio for management registers access. Gigabit phy device is integrated internally, lcp1250rj3srs features compliant with specifications for ieee 802. From vc707 board schematics, seems that sgmii gtx transceiver belongs to bank 1, so use clock pins ah8 p and ah7 n to drive sgmii interface.
Apr 24, 2012 the sgmii serial gigabit media independent interface is a supplement of mii,a standard interface used to connect an ethernet macblock to a phy. Figure 3 illustrates the gui command console for the smb2000. Application note an2036 frequently asked questions. The quad serial gigabit media independent interface qsgmii core provides a flexible solution for combining four serial gigabit media independent interfaces sgmii into a single 5 gigabits per second gbs interface, to significantly reduce the number of input outputs ios. Linking cpus with rgmii interfaces to sgmiibased switches. The rgmii interface has been designed in accordance with the standards and specifications agreed in the. This core supports cisco qsgmii specification version 1.
It is further assumed that the sfp module discussed in this interface is ac coupled, which is the typical connector in the sgmii systems. Serial gigabit media independent interface sgmii interfaces peripheral component interconnect express pcie serial rapidio is an industrystandard high speed switchedpacket. These two devices are connected using a media independent interface mii. The example was modified to use the sgmii 0 port instead. Not all the people involved in a project need to deal with the full flow. Usually works only on the fpga quartus project, and notifies the firmware engineer whenever the hardware. The serial gigabit media independent interface sgmii is a connection bus for ethernet media access controllers macs and physical layer devices phys defined by cisco systems. Logicore ip quad serial gigabit media independent v1. This interface supports 10, 100 and baset modes of operation, as mentioned above. Serial rapidio srio antenna interface aif hyperlink. As is known in the art, sgmii uses two data signals and two clock signals to convey frame data and link rate information between a 10100 phy and an ethernet mac. And also one ethernet device driver should work with the nic hardware. 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.
I know how to use the rgmii mode ethernet by using tri mode ethernet mac ip on kc705 board. The serial gigabit mediaindependent interface sgmii is the interface with the lowest pin count available for connecting compatible macs and phys. So if you want to do sgmi to sgmii youre going to have to pick a format and have your code for that. It could instead connect to a baset phy device using the same sgmii interface. Low power consumption, advanced power management and sophisticated qos features e. Sgmiiserdes interface sounds like you connected sgmii device in cdr mode, so in that case you have to place ac coupling caps near receiving end.
View and download xilinx logicore basex user manual online. You can load the sgmii image on the i210, it will expect an external sgmii phy to be connected to the mdio i2c interface. Figure 3 illustrates sgmii configuration and autonegotiation. Implementing sgmii interfaces on the powerquicc iii. Description fiberbit sgmii sfp is designed for 100basefx applications, with buildin phy device supporting sgmii interface. Dp83tc811 systems and reference schematics texas instruments. The devicespecific transceiver is connected to an external. Sgmii to sgmii connection processors forum processors. What is the exact difference between sgmii and basex. The spi block consists of transmitter and receiver sections. The core interfaces to a devicespecific transceiver, which provides some of the pcs layer functionality such as. The standard serial id information compatible with sfp msa describes the transceivers capabilities, standard interfaces, manufacturer and other information. The old phy in the previous design made the layout really simple where the pairs were in the right order so all we had to do is bring them into the sfp form the skinny end.
Controller is the main ethernet controller on the chip and has provisions for various types of interfaces for connecting to phy, like mii, rmii, gmii, rgmii, tbi etc. Sgmii interface implementation using soft cdr mode of altera fpgas. We have a custom board containing c6678 dsp which is connected to a dp83867 phy via the sgmii interface. It uses differential pairs at 625 mhz clock frequency ddr for tx and rx data and tx and rx clocks. It can also be used as a serial communication bus between the powerquicc mpc83e and other peripherals such as through a backplane. The mdi side of the phy is connected to a pc through a cat5 ethernet cable. Pdf ds710 ml605 ucf file iodelay virtex6 ml605 user guide switch sgmii mii gmii ramb36s example ml605 ethernet fpga rgmii basex xilinx basex sfp sgmii rgmii to sgmii. The 20pin connection diagram of module printed circuit board of. In addition, the example design provided with the core supports both verilog and vhdl. So your ethernet chip would connect to a basex phy using sgmii. It replaces the classic 22wire gmii connection with a low pin count, 4pair, differential sgmii connection. The rgmii specification document can be downloaded from. Rgmii uses half the number of data pins as used in the gmii interface. Triple speed ethernet data path reference design if you want to stop the operation before it is finished, you can issue a write to set the stop bit of the operation register, causing the current running operation to terminate.
Sensorys software for speech recognition, speech synthesis, speaker verification, and music synthesis has been ported to tensilcias hifi audiovoice dsps. In addition, the example design in this guide is provided in both verilog and vhdl formats. Ieee94 is a standard which is developed by american institute of electrical and electronics engineers ieee in 1995, the purpose is to provide a lowcost and fast transmission speed serial interface, which have the speeds of 400mbs,800mbs, 1. Interface sgmii core, customizing and simulating the core using the provided example design, and running the design files through implementation using the xilinx tools. It is utilised for gigabitethernet contrary to ethernet 10100 for mii. The core can seamlessly connect to any industry standard gigabit ethernet serdes serializer deserializer device via a gigabit tbi ten bit interface and to mac layer device. The values for caps is depend on the length of differential signals 10nf to 100nf for better termination. Applications switch to switch interface switched backplane applications file server interface module diagrams figure 1 illustrates the major functional components of the abcu57xxxxz family of transceivers. Microsd card interface, micro sd card interface connector j83 molex 5025700893 33 5 usb jtag interface, wmicrob connector digilent usb jtag module 16 6 clock generation, sysclk and other clocks, 1. Application note an2036 frequently asked questions regarding.
Configuring sgmii ethernet on the powerquicc mpc83e processor. The arria 10 sgmii reference design provides a set of essential hardware and software system components that can be used as a starting point for various custom user designs. Moreover, the cisco sgmii specification is comprised of more than just a bus interface definition. The serdes circuitry is configured to support source synchronous and asynchronous serial data communication for the sgmii interface at 1. Examples of max24287 and phy management using mdio. Ksz8863 interface and networking ethernet switches. The table below shows how to enable sgmii and advertise all speeds and fullhalfduplex using register writes to the phy over the 2wire serial interface see question 5. The dp83867 device is a robust, low power, fully featured physical layer transceiver with integrated pmd sublayers to support 10basete, 100basetx and baset ethernet protocols. A regulator design for a serdes phy of a high speed serial data interface. Sgmii link exchange sgmii is the mode of communication between the mac and phy that allows for copper 10100baset ieee 802. Serdes implementation guidelines for keystone devices.
Tn13 latticeecp2mmarvell serialgmii sgmii physical. Reduced gigabit media independent interface rgmii technical. When the i210 is configured for sgmii, it will only operate a marvell 88e1111 88e1112 phy. Eoptolink sgmii sfp is designed for 100basefx applications, with buildin phy device supporting sgmii interface. Ethernet quad serial gigabit media independent interface. Typically works with the hardware engineer to decide the design of the custom board, pin muxing, and to update the board xml file used by the device tree generator hardware engineer. Then i added an sgmii interface and connected the sgmii port on this ip to this interface.
But i have no idea about sgmii interface i studied that temac will be use with pcs pma or sgmii ip for sgmii ethernet. This sgmii solution meets the sgmii specification and saves cost and power in systems that have low to high portcount gigabit ethernet per device. Sgmii interface implementation using soft cdr mode of. Oct 22, 2017 the serial gigabit media independent interface sgmii is a popular gigabit ethernet phy interface, and it holds various advantages over both gmii and rgmii. Lcp1250rj3srs supports the sgmii interface without clock on mac side. It replaces the classic 22wire gmii connection with a low pin count, 4pair, differential sgmii. The evm is capable of providing a 125mhz reference clock from an onboard 25mhz crystal. In addition to the security engine, new highspeed interfaces, such as sgmii interface on enhanced. The cadence qsgmii ip provides the logic required to integrate a quad serial gigabit media independent interface with qsgmiimodified pcs functionality into any system on chip soc.
The ksz8863mllfllrll are highly integrated 3port switch ics in a small footprint. All has gone well but i have having second thoughts regarding the differential pairs that make up the sgmii interface between out gigabit ethernet phy and sfp cage. E18, e19 are belongs bank 38 you should not use these clocks to gt ref clock. In gigabit ethernet its the sgmii serial gigabit media independent interface. I am going to use ethernet on kcu105, the phy is configured as sgmii mode only on the eval board.
A10 sgmii reference design user manual documentation. Serdesbased interfaces on the keystone i family of dsp devices. Rgmii constraints basex ds297 sgmii specification ieee switch sgmii mii gmii rgmii phy xilinx spartan ucf file 6 sgmii xilinx. The mediaindependent interface mii was originally defined as a standard interface to connect. Sgmii connectivity using an altera fpga through copper sfp transceiver. This document also includes schematic diagrams, a printedcircuit board layout, board assembly, board marking drawings, and a bill of materials. When the stop bit is asserted, the state machine finishes generating the current packet and then stops the operation. The two standards supported are sufficiently similar to be supported in the same core.
Sgmii interface implementation using softcdr mode of stratix iii devices device. Lowpower, robust gigabit ethernet phy transceiver with sgmii. Within the pqiii devices the pcs and pma layers are implemented within the etsec via the ten bit interface tbi. Smii serial mii ethernet interface chapter 1 overview the serial media independent interface smii is designed to satisfy the following requirements.
Max24287 1gbps paralleltoserial mii converter microsemi. In the system, it is reasonable to select gmii and sgmii. Qad sera gat meda indeendent interace qsgmii ip overview cadence ip factory delivers custom, synthesizable ip to support specific design requirements. The serial gigabit mediaindependent interface sgmii is a variant of mii, a standard interface used to connect an ethernet mac block to a phy. The assignee of the present application developed the sgmii serial gigabit media independent interface to reduce the pin count to 6 pins per interface. Theserialgigabitmediaindependentinterface sgmii protocolprovidesconnectivitybetweenthephysical layer phy and the ethernet media controller mac. Latticeecp2mmarvell serialgmii sgmii physical layer interoperability figure 2 illustrates the smb2000 analyzer with a baset copper module gx1420b, rightmost module with rj45 cable attached. Resolved c6678 dsp dp83867 phy sgmii link up issue. It differs from gmii by its lowpower and low pincount serial interface commonly referred to as a serdes. Convey complete mii information between a 10100 phy and mac with two pins per port allow multi port macphy communications with one system clock operate in both half and full duplex.
The serial gigabit media independent interface sgmii protocol provides connectivity between the physical layer phy and the ethernet. Serial management interface, mdiomdc, is supported and can be. For detailed information about the core, see the 1g2. The sgmii solution for alterafpgas allows you to implement multiport gbps ethernet gbe systems with high port counts, low power, and low cost requirements. Configuring sgmii ethernet on the powerquicc mpc83e. Hi, i have a customer that is having a hard time getting his 6678 connect to an sgmiigmii bridge max24288. Review of ethernet sgmii concepts mind chasers inc. The finisar baset sfp can be used with a sgmii rev. The pcs core can be used with sgmii phys, supports sgmii 10100 or gigabit operation with data duplication and sgmii autonegotiation according to the cisco specification. The sgmii serial gigabit media independent interface is a supplement of mii,a standard interface used to connect an ethernet macblock to a phy. The mdi side is autonegotiated to mbps with no problems. Ug0447 user guide smartfusion2 and igloo2 fpga high. The gx1420b module is also shown to the right of the screen.
Getting started guides booting linux using prebuilt sd card image. Sgmii interface implementation using softcdr mode of. This application note provides detailed information of possible applications for. Each of the seven osi layers exchanges information with. From vc707 board schematics, seems that sgmii gtx transceiver belongs to bank 1, so use clock pins ah8 p and ah7 n to drive sgmii interface in shared design schematic independent clock bufg, signal detect connected to ground, it shouldnt be.
Autonegotiation is controlled and monitored via the pqiii tenbit interface tbi and the tbi mii set of registers. Data rates of 25 mbs or 250 mbs are not supported for the 2. It is used for gigabit ethernet but can also carry 10100 mbits ethernet. When i run synthesisimplementationgenerate bitstream i get errors about the sgmii interface pins rxn, rxp, txn, txp missing from the constraints file. The problem is about the link up in the sgmii interface. The sgmii specification is closely related to basex in that each utilizes the same physical coding sublayer pcs and physical medium attachment pma layers as is defined by basex 802. They are designed to enable a new generation of low port count, costsensitive and power efficient 10100mbps switch systems.
If it gets no response on that interface, the driver will report the device inoperable and exit. It consists of pairs of txdata, rxdata, and rx ref clk data pins. The serial gigabit media independent interface sgmii is a popular gigabit ethernet phy interface, and it holds various advantages over both gmii and rgmii. Pdf design and realization of gigabit ethernet interface based on. Connecting external marvell phy with sgmii community forums. Ethernet datasheet qad sera gat meda indeendent interace. It uses differential pairs at 625 mhz clock frequency ddr for.