What is Sgmii in Ethernet?

What is Sgmii in Ethernet?

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. It replaces the classic 22-wire GMII connection with a low pin count, 4-pair, differential SGMII connection.

What is the difference between MAC and PHY?

The PHY layer defines the physical and electrical characteristics of the network. It is responsible for managing the hardware that modulates and demodulates the RF bits. The MAC layer is responsible for sending and receiving RF frames.

What is the difference between 1000BASE-T and 1000BASE TX?

1000BASE-T is designed to operate over 4-pair UTP cable and supports full-duplex data transfer at 1000Mbps. But 1000BASE-TX operated over only two of the four pairs in the cable. 1000Base-TX transmits data at 500 Mbps on two pairs and receives data on the remaining two pairs at the same data rate.

Which is serial gigabit media independent interface ( SGMII )?

The serial gigabit media-independent interface (SGMII) is a variant of MII used for Gigabit Ethernet but can also carry 10/100 Mbit/s Ethernet. It uses differential pairs at 625 MHz clock frequency DDR for TX and RX data and TX and RX clocks. It differs from GMII by its low-power and low pin-count 8b/10b -coded SerDes.

Why is SGMII using TX _ config _ Reg?

Thus, I suppose SGMII is using the tx_config_reg to configure EVERY REGISTER (in the document, they only speak about the auto negociation process and how to exchange link patner abilities, not every registers). In the MAX24287, there is also a figure that shows a MDIO link between the MAC, MAX24287 and PHY.

Is the MDIO interface the same as the Mii interface?

Version 1.2 of the RMII Consortium specification states that its MDIO/MDC interface is identical to that specified for MII in IEEE 802.3u.

Is there a MDIO for the PHY Register?

I do not see a MDIO to control the registers of the PHY (Basic Mode Status Register, Basic Mode Control Register.) in the SGMII specification.