KSZ8864RMNI MICREL [Micrel Semiconductor], KSZ8864RMNI Datasheet - Page 25

• Manufacturer Part Number: KSZ8864RMNI
• Description: Integrated 4-Port 10/100 Managed Switch with Two MACs MII or RMII Interfaces
• Manufacturer: MICREL [Micrel Semiconductor]

September 2011
Crossover Cable
A crossover cable connects an MDI device to another MDI device, or an MDI-X device to another MDI-X device. The
following diagram shows a typical crossover cable connection between two switches or hubs (two MDI-X devices).
Auto-Negotiation
The KSZ8864RMN conforms to the auto-negotiation protocol as described by the 802.3 committee. Auto-negotiation
allows unshielded twisted pair (UTP) link partners to select the highest common mode of operation. Link partners
advertise their capabilities to each other, and then compare their own capabilities with those they received from their
link partners. The highest speed and duplex setting that is common to the two link partners is selected as the mode
of operation.
The following list shows the speed and duplex operation mode from highest to lowest.




Highest: 100Base-TX, full-duplex
High: 100Base-TX, half-duplex
Low: 10Base-T, full-duplex
Lowest: 10Base-T, half-duplex
Figure 2. Typical Crossover Cable Connection
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