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PDF KS8893M Data sheet ( Hoja de datos )

Número de pieza KS8893M
Descripción Integrated 3-Port 10/100 Managed Switch
Fabricantes Micrel Semiconductor 
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No Preview Available ! KS8893M Hoja de datos, Descripción, Manual

KS8w8w9w.3DaMtaS/hMeetL4U/.cMomI
Integrated 3-Port 10/100 Managed Switch with PHYs
Preliminary Data Sheet Rev. 1.0
General Description
The KS8893M, 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 rate limiting, tag/port-based
VLAN, 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 KS8893M 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 PHY unit supports 100BASE-
FX.
The KS8893ML is the single power supply version
with all the identical rich features of the KS8893M.
___________________________________________________________________________________________________
Functional Diagram
HP AUTO
MDIX
HP AUTO
MDIX
RMII/MII/
SNI
SPI
MIIM
SMI
I2C
P1 LED[3:0]
P2 LED[3:0]
10/100
T/TX/FX
PHY 1
10/100
T/TX
PHY 2
LED
DRIVERS
10/100
MAC 1
10/100
MAC 2
10/100
MAC 3
SNI
SPI
CONTROL
REGISTERS
1K LOOK-UP
ENGINE
QUEUE
MANAGEMENT
BUFFER
MANAGEMENT
FRAME
BUFFERS
MIB
COUNTERS
EEPROM
INTERFACE
STRAP IN
CONFIGURATION
June 2005
1 M9999-063005

1 page




KS8893M pdf
Micrel
KS8893M/ML/MI
www.DataSheet4U.com
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
100BASE-TX Transmit.........................................................................................................................................................21
100BASE-TX Receive ..........................................................................................................................................................21
PLL Clock Synthesizer........................................................................................................................................................22
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 .............................................................................................................................................................23
10BASE-T Receive ..............................................................................................................................................................23
Power Management.............................................................................................................................................................23
MDI/MDI-X Auto Crossover.................................................................................................................................................23
Straight Cable ................................................................................................................................................................24
Crossover Cable ............................................................................................................................................................25
Auto-Negotiation .................................................................................................................................................................25
LinkMD Cable Diagnostics .................................................................................................................................................27
Access ...........................................................................................................................................................................27
Usage ............................................................................................................................................................................27
Functional Overview: MAC and Switch ..............................................................................................28
Address Lookup ..................................................................................................................................................................28
Learning ...............................................................................................................................................................................28
Migration ..............................................................................................................................................................................28
Aging ....................................................................................................................................................................................28
Forwarding ........................................................................................................................................................................... 28
Switching Engine ................................................................................................................................................................31
MAC Operation ....................................................................................................................................................................31
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
MII Interface Operation........................................................................................................................................................32
RMII Interface Operation .....................................................................................................................................................33
SNI (7-Wire) Operation ........................................................................................................................................................34
MII Management Interface (MIIM) .......................................................................................................................................35
Serial Management Interface (SMI) ....................................................................................................................................36
Advanced Switch Functions ................................................................................................................37
Spanning Tree Support.......................................................................................................................................................37
Special Tagging Mode.........................................................................................................................................................38
IGMP Support ......................................................................................................................................................................39
IGMP Snooping .............................................................................................................................................................39
Multicast Address Insertion in the Static MAC Table .....................................................................................................39
June 2005
5 M9999-063005

5 Page





KS8893M arduino
Micrel
KS8893M/ML/MI
www.DataSheet4U.com
Pin Description and I/O Assignment
Pin Number
1
2
3
Pin Name
P1LED2
P1LED1
P1LED0
Type (1)
Ipu/O
Ipu/O
Ipu/O
Description
Port 1 LED Indicators
(apply to all modes of operation, except Repeater Mode)
P1LED3
P1LED2
P1LED1
P1LED0
[LEDSEL1, LEDSEL0]
[0, 0]
[0, 1]
——
Link/Act
100Link/Act
Full duplex/Col 10Link/Act
Speed
Full duplex
[LEDSEL1, LEDSEL0]
[1, 0]
[1, 1]
P1LED3
Act
P1LED2
Link
P1LED1
Full duplex/Col —
P1LED0
Speed
Link/Act, 100Link/Act, 10Link/Act : Low (link), High (no link),
Toggle (transmit / receive activity)
Full duplex/Col : Low (full duplex), High (half duplex), Toggles
(collision)
Speed : Low (100BASE-TX), High (10BASE-T)
Full duplex : Low (full duplex), High (half duplex)
Act : Toggle (transmit / receive activity)
Link : Low (link), High (no link)
Repeater Mode (only)
[LEDSEL1, LEDSEL0]
[0, 0]
P1LED3
RPT_COL
P1LED2
RPT_LINK3/RX
P1LED1
RPT_LINK2/RX
P1LED0
RPT_LINK1/RX
RPT_COL : Low (collision)
RPT_LINK#/RX (# = port) : Low (link), High (no link), Toggles
(receive activity)
Notes:
LEDSEL0 is external strap-in pin 70.
LEDSEL1 is external strap-in pin 23.
P1LED3 is pin 25.
During reset, P1LED[2:0] are inputs for internal testing.
Note:
1. Ipu/O = Input with internal pull-up during reset, output pin otherwise.
June 2005
11 M9999-063005

11 Page







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