مانند کابل­های UTP ، فیبر نوری و…

طرح اصلی MII برای کاهش تعداد سیگنال­ها و افزایش سرعت گسترش یافته است که در زیر انواع آن آورده شده است:

v  reduced media-independent interface RMII

Ø  The two clocks TXCLK and RXCLK are replaced by a single clock. This clock is an input to the PHY rather than an output, which allows the clock signal to be shared among all PHYs in a multiport device, such as a switch.

Ø  The clock frequency is doubled from 25 MHz to 50 MHz, while the data paths are narrowed to 2 bits rather than 4 bits.

Ø  RXDV and CRS signals are multiplexed to one signal.

Ø  The COL signal is removed.

v  gigabit media-independent interface GMII

Ø  speeds up to 1000 Mbit/s

Ø  data interface clocked at 125 MHz

Ø  eight-bit data paths for receive and transmit

Ø  can also operate on fall-back speeds of 10 or 100 Mbit/s

v  reduced gigabit media-independent interface RGMII

Ø  uses half the number of data pins as used in the GMII interface

Ø  clocking data on both the rising and falling edges of the clock in 1000 Mbit/s

Ø  eliminating non-essential signals (carrier-sense and collision-indication

v  serial gigabit media-independent interface SGMII

Ø  uses differential pairs at 625 MHz clock frequency for TX and RX data and TX and RX clocks

Ø  Transmit and receive path each use one differential pair for data and another differential pair for clock

Ø  low-power and low pin-count serial 8b/10b-coded interface

v  Quad serial gigabit media-independent interface QSGMII

Ø  combining four SGMII lines into a 5 Gbit/s interface

v  10 gigabit media-independent interface

Ø  a standard defined in IEEE 802.3 for connecting full duplex 10 Gigabit Ethernet

Ø  It is composed from two 32-bit datapaths (Rx & Tx) and two four-bit control flows (Rxc

and Txc, operating at 156.25 MHz DDR 312.5 MT/s