KSZ8851-16MQL Micrel Inc, KSZ8851-16MQL Datasheet - Page 27
KSZ8851-16MQL
Manufacturer Part Number
KSZ8851-16MQL
Description
Single Ethernet Port + Generic (16-bit) Bus Interface( )
Manufacturer
Micrel Inc
Specifications of KSZ8851-16MQL
Controller Type
Ethernet Controller, MAC/PHY
Interface
Bus
Voltage - Supply
1.8V, 2.5V, 3.3V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
128-MQFP, 128-PQFP
Operating Supply Voltage (typ)
3.3V
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
128
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
576-3292 - BOARD EVALUATION KSZ8851-16MLL
Current - Supply
-
Lead Free Status / RoHS Status
Compliant, Lead free / RoHS Compliant
Other names
576-3253
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
KSZ8851-16MQLI
Manufacturer:
MICREL
Quantity:
1 001
Auto Negotiation
The KSZ8851M 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 KSZ8851M 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 6).
August 2009
Micrel, Inc.
Media Dependent Interface
Modular Connector (RJ-45)
Transmit Pair
Receive Pair
(Repeater or Switch)
10/100 Ethernet
Figure 5. Typical Crossover Cable Connection
HUB
1
2
3
4
5
6
7
8
Crossover
Cable
27
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
KSZ8851-16/32 MQL/MQLI
M9999-083109-2.0