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How to route clock signals between Mii and RMII?
Since MII and RMII require clock signals between the PHY and MAC, best practices for routing clock signals should be used with longer traces. Generally, you should avoid the use of vias on traces carrying clock signals on board with impedance control as the trace impedance can be different between layers.
Is the MIIM the same as the Mii interface?
The MIIM should not be confused with the MII interface which is used to exchange data with a PHY device or an embedded switch. The MIIM is also known as MDIO/MDC Interface. The Management Data Input/output (MDIO) is a serial bus defined for the Ethernet family of IEEE 802.3 standards for the Media Independent Interface.
What does Mii stand for in Ethernet protocol?
MII (media-independent interface) is the standard used to connect the MAC (media access control) block to the PHY (physical) layer for networking devices. These two portions of an overall Ethernet networking device perform different functions within the OSI (open systems interconnect) model.
What should the trace impedance be for Mii?
The recommended trace impedance in MII is 50 Ohms +/- 10%. Although the trace length between the PHY and MAC is generally short enough to ignore transmission line effects, you should pay attention to impedance when routing the signal and clock traces when the traces are electrically long.
What’s the difference between Mii and PHY in Ethernet?
First things first, there are some important points to note about the overall architecture of Ethernet-capable devices and the associated routing standards. MII (media-independent interface) is the standard used to connect the MAC (media access control) block to the PHY (physical) layer for networking devices.
Which is Ethernet port does the PHY support?
The PHY supports the IEEE 802.3/802.3u standard of 10/100 Mbps. Ethernet network data transmission port. The Magnetics are part of the Ethernet specification to protect against faults and transients, including rejection of common mode signals between the transceiver IC and the cable.