KSZ8995MAI Micrel Inc, KSZ8995MAI Datasheet - Page 5

• Manufacturer Part Number: KSZ8995MAI
• Description: IC,Telecom Switching Circuit,CMOS,QFP,128PIN,PLASTIC
• Manufacturer: Micrel Inc

Specifications of KSZ8995MAI

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• Number Of Primary Switch Ports: 5
• Internal Memory Buffer Size: 64
• Operating Supply Voltage (typ): Not RequiredV
• Fiber Support: Yes
• Integrated Led Drivers: Yes
• Data Rate: 100Mbps
• 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): Not RequiredV
• Operating Supply Voltage (min): Not RequiredV
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1607 - BOARD EVAL EXPERIMENT KSZ8995MA
• Lead Free Status / Rohs Status: Compliant
• Other names: 576-2126; KSZ8995MAI

Semptember 2008
Contents
System Level Applications........................................................................................................................................... 8
Pin Configuration ........................................................................................................................................................ 10
Pin Description (by Number)...................................................................................................................................... 11
Pin Description (by Name) ......................................................................................................................................... 17
Introduction ................................................................................................................................................................. 23
Functional Overview: Physical Layer Transceiver .................................................................................................. 23
Functional Overview: Switch Core ............................................................................................................................ 25
Advanced Functionality.............................................................................................................................................. 31
Register Description ................................................................................................................................................... 42
100BASE-TX Transmit.............................................................................................................................................. 23
100BASE-TX Receive............................................................................................................................................... 23
PLL Clock Synthesizer.............................................................................................................................................. 23
Scrambler/De-Scrambler (100BASE-TX only).......................................................................................................... 24
100BASE-FX Operation............................................................................................................................................ 24
100BASE-FX Signal Detection ................................................................................................................................. 24
100BASE-FX far End fault ........................................................................................................................................ 24
10BASE-T Transmit .................................................................................................................................................. 24
10BASE-T Receive ................................................................................................................................................... 24
Power Management.................................................................................................................................................. 24
MDI/MDI-X Auto Crossover ...................................................................................................................................... 24
Auto-Negotiation ....................................................................................................................................................... 24
Address Look-Up ...................................................................................................................................................... 25
Learning .................................................................................................................................................................... 25
Migration ................................................................................................................................................................... 25
Aging ......................................................................................................................................................................... 25
Forwarding ................................................................................................................................................................ 25
Switching Engine ...................................................................................................................................................... 26
Media Access Controller (MAC) Operation............................................................................................................... 26
Inter-Packet Gap (IPG) ............................................................................................................................................. 26
Backoff Algorithm...................................................................................................................................................... 26
Late Collision ............................................................................................................................................................ 26
Illegal Frames ........................................................................................................................................................... 26
Flow Control.............................................................................................................................................................. 26
Broadcast Storm Protection ...................................................................................................................................... 28
MII Interface Operation ............................................................................................................................................. 29
SNI Interface Operation ............................................................................................................................................ 31
Spanning Tree Support............................................................................................................................................. 31
Special Tagging Mode .............................................................................................................................................. 32
IGMP Support ........................................................................................................................................................... 33
Port Mirroring Support............................................................................................................................................... 34
VLAN Support ........................................................................................................................................................... 34
Rate Limit Support .................................................................................................................................................... 35
Configuration Interface.............................................................................................................................................. 36
I
SPI Slave Serial Bus Configuration .......................................................................................................................... 38
MII Management Interface (MIIM) ............................................................................................................................ 41
Global Registers ....................................................................................................................................................... 43
Register 0 (0x00): Chip ID0 ...................................................................................................................................... 43
Register 1 (0x01): Chip ID1 / Start Switch ................................................................................................................ 43
Register 2 (0x02): Global Control 0 .......................................................................................................................... 43
Register 3 (0x03): Global Control 1 .......................................................................................................................... 43
Register 4 (0x04): Global Control 2 .......................................................................................................................... 44
Register 5 (0x05): Global Control 3 .......................................................................................................................... 45
2
C Master Serial Bus Configuration ......................................................................................................................... 38
Half-Duplex Back Pressure ........................................................................................................................... 28
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M9999-091508