KSZ8993MI Micrel Inc, KSZ8993MI Datasheet - Page 6

• Manufacturer Part Number: KSZ8993MI
• Description: IC SWITCH 10/100 W/TXRX 128PQFP
• Manufacturer: Micrel Inc

Specifications of KSZ8993MI

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• Number Of Primary Switch Ports: 3
• Internal Memory Buffer Size: 32
• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Fiber Support: Yes
• Integrated Led Drivers: Yes
• Phy/transceiver Interface: MII/SNI
• Power Supply Type: Analog/Digital
• Package Type: PQFP
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Supply Voltage (max): 1.89/3.465V
• Operating Supply Voltage (min): 1.71/3.135V
• Power Dissipation: 800mW
• Supply Current: 0.1/0.19A
• Operating Temperature Classification: Industrial
• Data Rate: 100Mbps
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-2124; KSZ8993MI

Contents
List of Figures .........................................................................................................................................9
List of Tables...........................................................................................................................................9
Pin Description and I/O Assignment...................................................................................................10
Pin Configuration..................................................................................................................................20
Functional Description .........................................................................................................................21
Functional Overview: Physical Layer Transceiver ............................................................................21
Functional Overview: MAC and Switch ..............................................................................................27
Advanced Switch Functions ................................................................................................................34
MII Management (MIIM) Registers .......................................................................................................45
Micrel, Inc.
October 2008
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
Auto Negotiation .................................................................................................................................................................25
Address Lookup ..................................................................................................................................................................27
Learning ...............................................................................................................................................................................27
Migration ..............................................................................................................................................................................27
Aging ....................................................................................................................................................................................27
Forwarding...........................................................................................................................................................................27
Switching Engine ................................................................................................................................................................30
MAC Operation ....................................................................................................................................................................30
MII Interface Operation........................................................................................................................................................31
SNI (7-Wire) Operation ........................................................................................................................................................32
MII Management Interface (MIIM) .......................................................................................................................................32
Serial Management Interface (SMI) ....................................................................................................................................33
Spanning Tree Support.......................................................................................................................................................34
Upstream Special Tagging Mode .......................................................................................................................................35
IGMP Support ......................................................................................................................................................................36
Port Mirroring Support........................................................................................................................................................36
IEEE 802.1Q VLAN Support ................................................................................................................................................36
QoS Priority Support...........................................................................................................................................................37
Rate Limiting Support .........................................................................................................................................................39
Configuration Interface .......................................................................................................................................................39
Loopback Support...............................................................................................................................................................44
Straight Cable ................................................................................................................................................................23
Crossover Cable ............................................................................................................................................................25
Inter Packet Gap (IPG) ..................................................................................................................................................30
Back-Off Algorithm.........................................................................................................................................................30
Late Collision .................................................................................................................................................................30
Illegal Frames ................................................................................................................................................................30
Flow Control...................................................................................................................................................................30
Half-Duplex Backpressure .............................................................................................................................................30
Broadcast Storm Protection ...........................................................................................................................................31
“IGMP” Snooping ...........................................................................................................................................................36
“Multicast Address Insertion” in the Static MAC Table...................................................................................................36
I
I
SPI Slave Serial Bus Configuration ...............................................................................................................................40
2
2
C Master Serial Bus Configuration ..............................................................................................................................39
C Slave Serial Bus Configuration ................................................................................................................................40
6
M9999-020606
KSZ8993M/ML