KSZ8851SNLI Micrel Inc, KSZ8851SNLI Datasheet - Page 18

KSZ8851SNLI

Manufacturer Part Number
KSZ8851SNLI
Description
Manufacturer
Micrel Inc
Datasheet

Specifications of KSZ8851SNLI

Operating Supply Voltage (typ)
3.3V
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
32
Lead Free Status / RoHS Status
Supplier Unconfirmed

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Auto Negotiation
The KSZ8851SNL 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 KSZ8851SNL 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 link setup is shown in the following flow diagram (Figure 5).
August 2009
Micrel, Inc.
Media Dependent Interface
Modular Connector (RJ-45)
Transmit Pair
Receive Pair
(Repeater or Switch)
10/100 Ethernet
Figure 4. Typical Crossover Cable Connection
HUB
1
2
3
4
5
6
7
8
Crossover
Cable
18
Media Dependent Interface
Modular Connector (RJ-45)
(Repeater or Switch)
1
2
3
4
5
6
7
8
10/100 Ethernet
Transmit Pair
HUB
Receive Pair
KSZ8851SNL/SNLI
M9999-083109-2.0

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