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What is KS8993ML?

This electronic component, produced by the manufacturer "Micrel Semiconductor", performs the same function as "Integrated 3-Port 10/100 Managed Integrated 3-Port 10/100 Managed".


KS8993ML Datasheet PDF - Micrel Semiconductor

Part Number KS8993ML
Description Integrated 3-Port 10/100 Managed Integrated 3-Port 10/100 Managed
Manufacturers Micrel Semiconductor 
Logo Micrel Semiconductor Logo 


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KS8993M/ML/MI
Integrated 3-Port 10/100 Managed
Switch with PHYs
Rev 1.04
General Description
The KS8993M, a highly integrated Layer 2 managed
switch, is designed for low port count, cost-sensitive
10/100 Mbps switch systems. It offers an extensive
feature set that includes tag/port-based VLAN,
quality of service (QoS) priority, management,
management information base (MIB) counters,
MII/SNI, and CPU control/data interfaces to
effectively address both current and emerging Fast
Ethernet applications.
The KS8993M contains two 10/100 transceivers with
patented mixed-signal low-power technology, three
media access control (MAC) units, a high-speed
non-blocking switch fabric, a dedicated address
lookup engine, and an on-chip frame buffer memory.
Both PHY units support 10BASE-T and 100BASE-
TX. In addition, one of the PHY unit supports
100BASE-FX.
The KS8993ML is the single supply version with all
the identical rich features of the KS8993M.
___________________________________________________________________________________________________
Functional Diagram
AUTO
MDI/MDI-X
AUTO
MDI/MDI-X
MII/SNI
10/100
T/TX/FX
PHY 1
10/100
T/TX
PHY 2
SPI
MIIM
SMI
I2C
P1 LED[3:0]
P2 LED[3:0]
LED
Drivers
10/100
MAC1
10/100
MAC2
10/100
MAC 3
SNI
SPI
Control
Registers
1KLook-Up
Engine
Queue
Management
Buffer
Management
Frame
Buffers
MIB
Counters
EEPROM
Interface
Strap-In
Configuration Pins
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
April 2005
1
M9999-041205

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KS8993ML equivalent
Micrel, Inc.
KS8993M/ML/MI
Contents
List of Figures .........................................................................................................................................8
List of Tables...........................................................................................................................................8
Pin Description and I/O Assignment.....................................................................................................9
Pin Configuration..................................................................................................................................19
Functional Description .........................................................................................................................20
Functional Overview: Physical Layer Transceiver ............................................................................20
100BASE-TX Transmit.........................................................................................................................................................20
100BASE-TX Receive ..........................................................................................................................................................20
PLL Clock Synthesizer........................................................................................................................................................21
Scrambler/De-scrambler (100BASE-TX Only) ...................................................................................................................21
100BASE-FX Operation.......................................................................................................................................................21
100BASE-FX Signal Detection............................................................................................................................................21
100BASE-FX Far End Fault.................................................................................................................................................21
10BASE-T Transmit .............................................................................................................................................................21
10BASE-T Receive ..............................................................................................................................................................22
Power Management.............................................................................................................................................................22
MDI /MDI-X Auto Crossover................................................................................................................................................22
Straight Cable ................................................................................................................................................................23
Crossover Cable ............................................................................................................................................................24
Auto Negotiation .................................................................................................................................................................24
Functional Overview: MAC and Switch ..............................................................................................26
Address Lookup ..................................................................................................................................................................26
Learning ...............................................................................................................................................................................26
Migration ..............................................................................................................................................................................26
Aging ....................................................................................................................................................................................26
Forwarding ........................................................................................................................................................................... 26
Switching Engine ................................................................................................................................................................29
MAC Operation ....................................................................................................................................................................29
Inter Packet Gap (IPG) ..................................................................................................................................................29
Back-Off Algorithm.........................................................................................................................................................29
Late Collision .................................................................................................................................................................29
Illegal Frames ................................................................................................................................................................29
Flow Control...................................................................................................................................................................29
Half-Duplex Backpressure .............................................................................................................................................29
Broadcast Storm Protection ...........................................................................................................................................30
MII Interface Operation........................................................................................................................................................30
SNI (7-Wire) Operation ........................................................................................................................................................31
MII Management Interface (MIIM) .......................................................................................................................................31
Serial Management Interface (SMI) ....................................................................................................................................32
Advanced Switch Functions ................................................................................................................33
Spanning Tree Support.......................................................................................................................................................33
Upstream Special Tagging Mode .......................................................................................................................................34
IGMP Support ......................................................................................................................................................................35
“IGMP” Snooping ...........................................................................................................................................................35
“Multicast Address Insertion” in the Static MAC Table...................................................................................................35
Port Mirroring Support........................................................................................................................................................35
IEEE 802.1Q VLAN Support ................................................................................................................................................35
QoS Priority Support...........................................................................................................................................................36
Rate Limiting Support .........................................................................................................................................................38
Configuration Interface .......................................................................................................................................................38
I2C Master Serial Bus Configuration ..............................................................................................................................38
I2C Slave Serial Bus Configuration ................................................................................................................................39
SPI Slave Serial Bus Configuration ...............................................................................................................................39
Loopback Support...............................................................................................................................................................43
MII Management (MIIM) Registers .......................................................................................................44
Register 0: MII Basic Control..........................................................................................................................................45
April 2005
5 M9999-041205


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Featured Datasheets

Part NumberDescriptionMFRS
KS8993MThe function is Integrated 3-Port 10/100 Managed Integrated 3-Port 10/100 Managed. Micrel SemiconductorMicrel Semiconductor
KS8993MIThe function is Integrated 3-Port 10/100 Managed Integrated 3-Port 10/100 Managed. Micrel SemiconductorMicrel Semiconductor
KS8993MLThe function is Integrated 3-Port 10/100 Managed Integrated 3-Port 10/100 Managed. Micrel SemiconductorMicrel Semiconductor

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