KSZ8051MLL View Datasheet(PDF) - Micrel
Part Name
Description
MFG CO.
'KSZ8051MLL' PDF : 51 Pages View PDF
Micrel, Inc.
KSZ8051MLL
Figure 1. Auto-Negotiation Flow Chart
MII Data Interface
The Media Independent Interface (MII) is compliant with the IEEE 802.3 Specification. It provides a common interface
between MII PHYs and MACs, and has the following key characteristics:
• Pin count is 15 pins (6 pins for data transmission, 7 pins for data reception, and 2 pins for carrier and collision
indication).
• 10Mbps and 100Mbps data rates are supported at both half and full duplex.
• Data transmission and reception are independent and belong to separate signal groups.
• Transmit data and receive data are each 4-bit wide, a nibble.
By default, the KSZ8051MLL is configured to MII mode after it is powered up or hardware reset with the following:
• A 25MHz crystal connected to XI, XO (pins 15, 14), or an external 25MHz clock source (oscillator) connected to
XI.
• The CONFIG[2:0] strapping pins (pins 27, 41, 40) set to ‘000’ (default setting).
July 2010
16
M9999-071210-1.0
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