Gigabit e thernet defines an enhanced mii, termed the gigabit mediaindependent interface. Gigabit media independent interfaces sgmii into one 5. Mode selection is enabled to provide for automatic detection and adaptation to any transmit rate including 10m, 100m, 1g, and 10g. Gigabit media independent interface proposal ieee 802. Reduced gigabit media independent interface rgmii is a standard interface, which helps in reducing the number of signals required to connect a phy to a mac. Corergmii is responsible for providing the interface between a standard gigabit media independent interface gmii to rgmii conversion. Composed of independent 8bitparallel trans mitandreceive synchronous data interfaces, the. Gigabit ethernet transceiver with rgmii support microchip. This reduction is achieved by clocking data on both the rising and falling edges of the clock in mbits operation, and by eliminating nonessential signals carriersense and collisionindication. A medium access control mac device comprising an encoder that encodes a transmit control signal including one of a transmit enable signal in one half cycle of a. The interface operates at speeds up to mbits, implemented using a data interface clocked at 125 mhz with separate eightbit data paths for receive and transmit, and is. It reduces the number of signalspins required for connecting to the phy from 16 for an miicompliant interface to between 6 and 10.
Page 2 of 9 revision level date revision description 1. Tms320c6472 fixedpoint digital signal processor data manual sprs612. 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. The alaska 88e1116r supports the reduced gigabit media independent interface rgmii for direct connection to a media access controller macswitch port. It provides independent 8bit wide transmit and receive data paths. The classic gmii interface defined in the ieee 802.
Us7720068b2 method and system for a multirate gigabit. The serial gigabit media independent interface sgmii is a connection bus for ethernet macs and phys defined by cisco systems. This device interfaces directly to the mac layer through the ieee 802. Gigabit media independent interface gmii optional media access control mac full duplex andor half duplex base t pma transceiver base x phy 8b10b autonegotiation base t pcs unshielded twisted pair ieee 802. These devices have builtin serializerdeserializer serdes circuitry that supports highspeed.
Gigabit ethernet gbe switch subsystem users guide literature number. The gmii to rgmii ip core provides the reduced gigabit media. The interface between the rocketphy and the pcs can be a dual data rate implementation of a 10 gigabit 16. Page 2 of 8 revision level date revision description 1. The ksz9031nx reduces board cost and simplifies r board layout by using onchip termination resistors for the. Each port configured and monitored through independent a serial mdio. This core supports cisco qsgmii specification version 1. Reduced media independent interface rmii is a standard that addresses the connection of ethernet physical layer transceivers phy to ethernet switches. Qad sera gat meda indeendent interace qsgmii ip overview cadence ip factory delivers custom, synthesizable ip to support specific design requirements. Page 1 of 8 reduced gigabit media independent interface rgmii 12102000 version 1.
The ksz9031rnx provides the reduced gigabit media independent interface rgmii for direct connection to rgmii macs in gigabit ethernet processors and switches for data transfer at 10100mbps. Gigabit ethernet extends the isoiec 88023 mac beyond 100 mbs to mbs. Ethernet datasheet qad sera gat meda indeendent interace. Gigabit media independent interface gmii is an interface between the media access control mac device and the physical layer. 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. Logicore ip quad serial gigabit media independent v1. It replaces the classic 22wire gmii connection with a low pin count, 4pair, differential sgmii connection.
The ksz9021rl provides the reduced gigabit media independent interface rgmii for direct connection to rgmii macs in gigabit ethernet processors and switches for data transfer at 10100mbps speed. A trilevel encoding method where a change in the logic level represents a code bit 1 and the logic output remaining at. A synchronous gigabit ethernet protocol stack for high. Current variants include, reduced mediaindependent interface rmii, gigabit mediaindependent interface gmii. The logicore 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. 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.
Media independent interface mii, reduced gigabit mii rgmii, and serial gigabit mii sgmii are examples used for this session. The rgmii interface has been designed in accordance with the standards and specifications agreed in the. In order to accomplish this objective, the data paths and all. Tn13 latticeecp2mmarvell serialgmii sgmii physical. In addition, the 88e1116r uses advanced mixedsignal processing to perform equalization, echo.
Gigabit e thernet defines an enhanced mii, termed the gigabit media independent interface. All source files are included with the reference design to allow customization for specific applications. The optical interfaces for transmitters and receivers are integrated in socalled cfp modules 100 gigabit smallformfactor pluggable. Gigabit media independent interface reduced area, power, complexity lower cost reduced crosstalk, ssn, emi lower ber. Ethernet interface or attachment unit interface aui. Rgmii macs in gigabit ethernet processors and switches. Gigabit media independent interface media independent interface for connection to gmiimii macs in gigabit ethernet processors and switches for data transfer at mbps or 10100mbps. The mac controls the access to the phy and transmits the data in an ethernet packet. The interface defines speeds up to mbits, implemented using an eightbit data interface clocked at 125 mhz, and is backwards compatible with the media independent interface mii specification. Physicalside interface phy mode to connect to an external phy through gigabit. Mac media access controller mdi medium dependent interface mdix media independent interface with crossover mef multiple ethernet frames mii media independent interface mlt3 multilevel transmission encoding 3levels. Dp83865 gig phyter v 10100 ethernet physical layer. Gmii gigabit media independent interface the various layers of the gigabit ethernet protocol architecture are shown in fig.
Mode selection comprises the negotiation between the ugmii extension sublayers located at the mac and phy to select between one of several operational. Xapp775 10 gigabit ethernetfibrechannel pcs reference. Data link layer the data link layer with respect to. Phy interface the com5401soft interfaces with an external 10100 ethernet phy through one of several standard media independent interfaces. The ksz9021rl reduces board cost and simplifies board layout by using chip termination resistors for the four on. Introduction to highspeed serial interface circuits and systems design practice for highspeed serial interface circuits.
Reduced pincount interface for gigabit ethernet physical layer devices. The gmii allows industry to develop additional p hysical lay er phy specificationsfor example, sup port for categor y5 utp cabling. Overview of ethernet technology ethernet evolution frame format 10 gigabit ethernet technology demand for 10gbe 10gbe phy technology io consolidation over ethernet. Media access controller mac core, logiccore xaui core or 10 gigabit media independent interface xgmii reference design xapp606. Serial gigabit media independent interface the lvds ios in the intel stratix 10, intel arria 10, stratix v, stratix iv, stratix iii, arria v, arria ii gx fast speed grade, intel cyclone 10 gx and lp fpgas allow you to easily implement the serial gigabit media independent interface sgmii for 10100 mb or gigabit ethernet. The gigabit media independent interface gmii is an interface between the medium access control mac device and the physical layer. The ksz9031mnx reduces board cost and simplifies board layout by using onchip termination resistors for the. Logicore ip quad serial gigabit media independent v3.
The mediaindependent interface mii was originally defined as a standard interface to connect. Reduced gigabit media independent interface rgmii 412002 version 2. The ksz9031mnx reduces board cost and simplifies board layout by. Keystone architecture gigabit ethernet gbe switch subsystem. The gmii is the interface between the mac layer and the physical layer. The dp83865 is a fourth generation gigabit phy with field proven architecture and performance.
June 24, 2010 phyless ethernet implementation using. Disclosed is a ugmii system to interface multirate devices including 10 gigabit per second data exchange rates. Ksz91rnx gigabit ethernet transceiver with rgmii support. It is an extension of the mii media independent interface used in fast ethernet.
I am a member of the applications support team and have worked on several customer. The reduced gigabit media independent interface rgmii supports onchip datatoclock delay timing according to the. Reduced gigabit mediaindependent interface rgmii specifies a particular interface between an ethernet mac and phy rgmii uses half the number of data pins as used in the gmii interface. Logicore ip quad serial gigabit media independent v2. Similar to the pluggable xfp modules 10 gigabit smallformfactor pluggable, they are also transponders that can be changed during operation hot swappable and that are independent of protocol. I am a member of the applications support team and have worked on several customer tickets inquiring about various products and. Data and delimiters are synchronous to clock references. Multilevel analog signaling techniques for 10 gigabit. Media access control mac full duplex 10 gigabit media independent interface xmii parallel 8, 16, 32 bits each way 10 gigabit pcspma interface serial 2.
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