Contents
What is an MDI device?
A medium dependent interface (MDI) describes the interface (both physical and electrical/optical) in a computer network from a physical layer implementation to the physical medium used to carry the transmission. Ethernet over twisted pair also defines a medium dependent interface crossover (MDI-X) interface.
What is the difference between MDI and MDIX?
MDI/MDIX is a type of Ethernet port connection using twisted pair cabling. The standard wiring for end stations is MDI, whereas the standard wiring for hubs and switches is MDIX. MDI ports connect to MDIX ports using straight-through twisted pair cabling.
What does MDIX stand for?
medium dependent interface crossover
A medium dependent interface crossover (MDIX) is a version of the medium dependent interface (MDI) enabling a connection between corresponding devices.
What does PHY mean in college?
Need course numbers?
| Code | Description |
|---|---|
| PHSL | Physiology |
| PHYS | Physics |
| POLS | Political Science |
| PSY | Psychological & Brain Sciences |
How is the media independent interface ( MII ) defined?
The media-independent interface (MII) was originally defined as a standard interface to connect a Fast Ethernet (i.e., 100 Mbit/s) media access control (MAC) block to a PHY chip. The MII is standardized by IEEE 802.3u and connects different types of PHYs to MACs.
Why do we need reduced media independent interface?
Reduced media-independent interface (RMII) is a standard which was developed to reduce the number of signals required to connect a PHY to a MAC. Reducing pin count reduces cost and complexity for network hardware especially in the context of microcontrollers with built-in MAC, FPGAs, multiport switches or repeaters, and PC motherboard chipsets.
What’s the difference between MDI and Ethernet cable?
Ethernet. These are referred to as MDI and MDI-X (medium dependent interface crossover). When connecting an MDI port to an MDI-X port, a straight through cable is used while to connect two MDI ports or two MDI-X ports, a crossover cable must be used. Conventionally, MDI is used on end devices while MDI-X is used on hubs and switches.
What are the two types of Medium Dependent Interface?
Since twisted pair cables are conventionally wired pin to pin there are two different pinouts used for the medium-dependent interface. These are referred to as MDI and MDI-X (medium-dependent interface crossover).