KSZ8893-MQL Micrel Semiconductor, Inc., KSZ8893-MQL Datasheet - Page 5

• Manufacturer Part Number: KSZ8893-MQL
• Description: Integrated 3-Port 10/100 Managed Switch with PHYs
• Manufacturer: Micrel Semiconductor, Inc.

Contents
General Description................................................................................................................................1
Functional Diagram ................................................................................................................................1
Features ...................................................................................................................................................2
Applications ............................................................................................................................................2
Ordering Information ..............................................................................................................................3
Contacts ..................................................................................................................................................3
Revision History......................................................................................................................................4
Contents ..................................................................................................................................................5
List of Figures .........................................................................................................................................9
List of Tables.........................................................................................................................................10
Pin Description and I/O Assignment...................................................................................................11
Pin Configuration..................................................................................................................................20
Functional Description .........................................................................................................................21
Functional Overview: Physical Layer Transceiver ............................................................................21
Functional Overview: MAC and Switch ..............................................................................................28
Advanced Switch Functions ................................................................................................................37
Micrel
November 2005
100BASE-TX Transmit.........................................................................................................................................................21
100BASE-TX Receive ..........................................................................................................................................................21
PLL Clock Synthesizer........................................................................................................................................................21
Scrambler/De-scrambler (100BASE-TX Only) ...................................................................................................................22
100BASE-FX Operation.......................................................................................................................................................22
100BASE-FX Signal Detection............................................................................................................................................22
100BASE-FX Far-End Fault.................................................................................................................................................22
10BASE-T Transmit .............................................................................................................................................................22
10BASE-T Receive ..............................................................................................................................................................23
Power Management.............................................................................................................................................................23
MDI/MDI-X Auto Crossover.................................................................................................................................................23
Auto-Negotiation .................................................................................................................................................................25
LinkMD Cable Diagnostics .................................................................................................................................................27
Address Lookup ..................................................................................................................................................................28
Learning ...............................................................................................................................................................................28
Migration ..............................................................................................................................................................................28
Aging ....................................................................................................................................................................................28
Forwarding...........................................................................................................................................................................28
Switching Engine ................................................................................................................................................................31
MAC Operation ....................................................................................................................................................................31
MII Interface Operation........................................................................................................................................................32
RMII Interface Operation .....................................................................................................................................................33
SNI (7-Wire) Operation ........................................................................................................................................................34
MII Management (MIIM) Interface .......................................................................................................................................35
Serial Management Interface (SMI) ....................................................................................................................................36
Repeater Mode.....................................................................................................................................................................36
Spanning Tree Support.......................................................................................................................................................37
Special Tagging Mode.........................................................................................................................................................38
IGMP Support ......................................................................................................................................................................39
Straight Cable ................................................................................................................................................................24
Crossover Cable ............................................................................................................................................................25
Access ...........................................................................................................................................................................27
Usage ............................................................................................................................................................................27
Inter Packet Gap (IPG) ..................................................................................................................................................31
Back-Off Algorithm.........................................................................................................................................................31
Late Collision .................................................................................................................................................................31
Illegal Frames ................................................................................................................................................................31
Full Duplex Flow Control................................................................................................................................................31
Half-Duplex Backpressure .............................................................................................................................................31
Broadcast Storm Protection ...........................................................................................................................................32
IGMP Snooping .............................................................................................................................................................39
5
KSZ8893MQL/MQLI
M9999-111705