KSZ8851-16MLL TR Micrel Inc, KSZ8851-16MLL TR Datasheet - Page 4

• Manufacturer Part Number: KSZ8851-16MLL TR
• Description: Single Ethernet Port + Generic (16-bit) Bus Interface( )
• Manufacturer: Micrel Inc

Specifications of KSZ8851-16MLL TR

• Operating Supply Voltage (typ): 3.3V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / RoHS Status: Compliant

Contents
Pin Configuration .......................................................................................................................................... 10
Pin Description .............................................................................................................................................. 11
Strapping Options ......................................................................................................................................... 13
Functional Description.................................................................................................................................. 14
Functional Overview ..................................................................................................................................... 14
August 2009
Micrel, Inc.
Power Management ............................................................................................................................... 14
Normal Operation Mode........................................................................................................................... 14
Energy Detect Mode ................................................................................................................................ 14
Soft Power Down Mode ........................................................................................................................... 15
Power Saving Mode................................................................................................................................. 15
Wake-on-LAN ......................................................................................................................................... 15
Detection of Energy ................................................................................................................................. 15
Detection of Linkup .................................................................................................................................. 15
Wake-up Packet ...................................................................................................................................... 15
Magic Packet™........................................................................................................................................ 16
Physical Layer Transceiver (PHY) ........................................................................................................ 16
100BASE-TX Transmit............................................................................................................................. 16
100BASE-TX Receive.............................................................................................................................. 17
PLL Clock Synthesizer (Recovery)........................................................................................................... 17
Scrambler/De-scrambler (100BASE-TX only) .......................................................................................... 17
10BASE-T Transmit ................................................................................................................................. 17
10BASE-T Receive .................................................................................................................................. 17
MDI/MDI-X Auto Crossover...................................................................................................................... 17
Straight Cable .......................................................................................................................................... 18
Crossover Cable ...................................................................................................................................... 18
Auto Negotiation ...................................................................................................................................... 19
LinkMD
Access ..................................................................................................................................................... 20
Usage ...................................................................................................................................................... 20
Media Access Control (MAC) Operation............................................................................................... 21
Inter Packet Gap (IPG)............................................................................................................................. 21
Back-Off Algorithm................................................................................................................................... 21
Late Collision ........................................................................................................................................... 21
Flow Control............................................................................................................................................. 21
Half-Duplex Backpressure ....................................................................................................................... 22
Address Filtering Function ....................................................................................................................... 22
Clock Generator....................................................................................................................................... 23
Bus Interface Unit (BIU)......................................................................................................................... 23
Supported Transfers ................................................................................................................................ 23
Physical Data Bus Size ............................................................................................................................ 23
Little and Big Endian Support................................................................................................................... 23
Asynchronous Interface ........................................................................................................................... 24
BIU Summation........................................................................................................................................ 24
Queue Management Unit (QMU) ........................................................................................................... 24
Transmit Queue (TXQ) Frame Format ..................................................................................................... 24
Frame Transmitting Path Operation in TXQ ............................................................................................. 26
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Cable Diagnostics ..................................................................................................................... 20
4
KSZ8851-16MLL/MLLI
M9999-083109-2.0