KSZ8851-16MLLU TR Micrel, KSZ8851-16MLLU TR Datasheet - Page 21

• Manufacturer Part Number: KSZ8851-16MLLU TR
• Description: Ethernet ICs Single-Port Ethernet Controller (Automotive Grade)
• Manufacturer: Micrel

Specifications of KSZ8851-16MLLU TR

• Rohs: yes
• Product: Ethernet Controllers
• Package / Case: LQFP-48
• Mounting Style: SMD/SMT

Micrel, Inc.
KSZ8851-16MLL/MLLI
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 chips or hubs (two MDI-X devices).
Figure 4. Typical Crossover Cable Connection
Auto Negotiation
The KSZ8851-16MLL conforms to the auto negotiation protocol as described by the 802.3 committee to allow the port to
operate at either 10Base-T or 100Base-TX.
Auto negotiation allows unshielded twisted pair (UTP) link partners to select the best common mode of operation. In auto
negotiation, the link partners advertise capabilities across the link to each other. If auto negotiation is not supported or the
link partner to the KSZ8851-16MLL is forced to bypass auto negotiation, the mode is set by observing the signal at the
receiver. This is known as parallel mode because while the transmitter is sending auto negotiation advertisements, the
receiver is listening for advertisements or a fixed signal protocol.The auto negotiation link setup is shown in Figure 5.
May 2012
21
M9999-050112-2.1