KSZ8851SNLI Micrel Inc, KSZ8851SNLI Datasheet - Page 4

• Manufacturer Part Number: KSZ8851SNLI
• Manufacturer: Micrel Inc

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

Contents
Pin Configuration ................................................................................................................................................................ 10
Pin Description .................................................................................................................................................................... 11
Strapping Options ............................................................................................................................................................... 12
Functional Description ....................................................................................................................................................... 13
Functional Overview ........................................................................................................................................................... 13
August 2009
Micrel, Inc.
Power Management........................................................................................................................................................ 13
Wake-on-LAN ................................................................................................................................................................. 14
Physical Layer Transceiver (PHY).................................................................................................................................. 16
Media Access Control (MAC) Operation ........................................................................................................................ 20
Serial Peripheral Interface (SPI) ..................................................................................................................................... 22
Queue Management Unit (QMU).................................................................................................................................... 24
Normal Operation Mode........................................................................................................................................... 13
Energy Detect Mode ................................................................................................................................................ 13
Soft Power Down Mode ........................................................................................................................................... 14
Power Saving Mode ................................................................................................................................................. 14
Detection of Energy.................................................................................................................................................. 14
Detection of Linkup .................................................................................................................................................. 14
Wake-up Packet....................................................................................................................................................... 15
Magic Packet............................................................................................................................................................ 15
100BASE-TX Transmit .............................................................................................................................................. 16
100BASE-TX Receive ............................................................................................................................................... 16
PLL Clock Synthesizer (Recovery)............................................................................................................................. 16
Scrambler/De-scrambler (100BASE-TX only) ............................................................................................................ 16
10BASE-T Transmit .................................................................................................................................................. 16
10BASE-T Receive ................................................................................................................................................... 16
MDI/MDI-X Auto Crossover...................................................................................................................................... 17
Auto Negotiation....................................................................................................................................................... 18
LinkMD
Inter Packet Gap (IPG)............................................................................................................................................. 20
Back-Off Algorithm ................................................................................................................................................... 20
Late Collision............................................................................................................................................................ 20
Flow Control ............................................................................................................................................................. 20
Half-Duplex Backpressure ....................................................................................................................................... 21
Address Filtering Function ....................................................................................................................................... 21
Clock Generator ....................................................................................................................................................... 22
SPI Internal I/O Registers Access Operation Timing............................................................................................... 23
SPI TXQ/RXQ FIFOs Access Operation Timing...................................................................................................... 23
Transmit Queue (TXQ) Frame Format..................................................................................................................... 24
Frame Transmitting Path Operation in TXQ ............................................................................................................ 25
Straight Cable .................................................................................................................................................... 17
Crossover Cable ................................................................................................................................................ 17
Access ............................................................................................................................................................... 19
Usage ................................................................................................................................................................ 20
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Cable Diagnostics ..................................................................................................................................... 19
4
KSZ8851SNL/SNLI
M9999-083109-2.0