How fast is RGMII?
Reduced gigabit media-independent interface Thus RGMII consists only of 12 pins, as opposed to GMII’s 24. Data is clocked on rising and falling edges for 1000 Mbit/s, and on rising edges only for 10/100 Mbit/s.
What is Rgmii interface?
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. Both paths have an independent clock, 4 data signals and a control signal. The RGMII standard specifies that data and clock be output simultaneously (ie.
What is RGMII used for?
In this application note, an RGMII adaptation module is used to reduce the number of pins required to connect the Gigabit Ethernet MAC to a Gigabit PHY from 24 to 12. The RGMII achieves this 50 percent pin count reduction in the interface by using double-data-rate (DDR) flip-flops.
What is difference between RGMII and Sgmii?
The pin count for all three interfaces are different. GMII and RGMII operate at 125 megahertz and SGMII operates at 625 megahertz. The important difference between RGMII and GMII is the pin count. Although RGMII has half the pins of GMII, it can still operate at gigabit speeds using the same clock frequency.
What is RGMII in Ethernet?
The Reduced Gigabit Media Independent Interface (RGMII) is an alternative to the Gigabit. Media Independent Interface (GMII). In this application note, an RGMII adaptation module is used to reduce the number of pins required to connect the Gigabit Ethernet MAC to a Gigabit PHY from 24 to 12.
What is Rgmii in Ethernet?
What is Sgmii used for?
The serial gigabit media-independent interface (SGMII) is the interface with the lowest pin count available for connecting compatible MACs and PHYs. It consists of pairs of Txdata, Rxdata, and Rx Ref Clk data pins.
What is MII RMII?
Therefore, RMII (reduced MII) was developed as a variant of MII to cut the number of unshareable signals per PHY interface in half (down to 8 per PHY). The RMII specification is also capable of supporting 10 Mbps and 100 Mbps data rates, and there are gigabit-capable variants.
What is MAC IC?
IC-MAC is a variant of IEEE 802.15.4 and it introduces a dynamic scheduling mechanism into the superframe structure of 802.15.4. With this mechanism, IC-MAC uses the slotted CSMA/CA algorithm under low network load, and can automatically switch to schedule-based transmission when the load becomes high.