KS8995E Micrel Inc, KS8995E Datasheet - Page 4

• Manufacturer Part Number: KS8995E
• Manufacturer: Micrel Inc

Specifications of KS8995E

• Number Of Primary Switch Ports: 5
• 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): 70C
• Operating Temperature (min): 0C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Not Compliant

KS8995E
Table of Contents
KS8995E
System Level Applications .............................................................................................................................................................. 6
Pin Description .............................................................................................................................................................................. 7
I/O Grouping
I/O Descriptions ............................................................................................................................................................................ 12
Pin Configuration ........................................................................................................................................................................... 16
Functional Overview: Physical Layer Transceiver ..................................................................................................................... 17
Functional Overview: Switch Core ............................................................................................................................................... 19
MII Interface Operation .................................................................................................................................................................. 21
SNI Interface (7-wire) Operation ................................................................................................................................................... 22
8995E Improvements ..................................................................................................................................................................... 22
VLAN Operations ........................................................................................................................................................................... 23
Other Programmable Features ..................................................................................................................................................... 24
EEPROM Operations ...................................................................................................................................................................... 24
Compatibility with KS8995 ............................................................................................................................................................ 24
100BaseTX Transmit ............................................................................................................................................................... 17
100BaseTX Receive ................................................................................................................................................................ 17
PLL Clock Synthesizer ............................................................................................................................................................ 17
Scrambler/De-scrambler (100BaseTX only) ............................................................................................................................ 17
100BaseFX operation .............................................................................................................................................................. 17
100BaseFX Signal Detection ................................................................................................................................................... 17
100BaseFX Far End Fault ....................................................................................................................................................... 17
10BaseT Transmit ................................................................................................................................................................... 17
10BaseT Receive .................................................................................................................................................................... 17
Power Management ................................................................................................................................................................ 18
MDI/MDI-X Auto Crossover ..................................................................................................................................................... 18
Auto-Negotiation ...................................................................................................................................................................... 18
Address Look Up ..................................................................................................................................................................... 19
Switching Engine ..................................................................................................................................................................... 19
MAC (Media Access Controller) Operation ............................................................................................................................. 19
Back off Algorithm ................................................................................................................................................................... 19
Late Collision ........................................................................................................................................................................... 19
Illegal Frame ............................................................................................................................................................................ 19
Flow Control ............................................................................................................................................................................ 19
Broadcast Storm Protection ..................................................................................................................................................... 19
Priority Schemes ..................................................................................................................................................................... 22
Per Port Method ...................................................................................................................................................................... 22
802.1p Method ......................................................................................................................................................................... 22
IPv4 DSCP Method ................................................................................................................................................................. 22
Other Priority Considerations .................................................................................................................................................. 22
Power Save Mode ........................................................................................................................................................... 18
Learning .......................................................................................................................................................................... 19
Migration ......................................................................................................................................................................... 19
Aging ............................................................................................................................................................................ 19
Forwarding ...................................................................................................................................................................... 19
Inter Packet Group .......................................................................................................................................................... 19
Half-Duplex Back Pressure ............................................................................................................................................. 19
............................................................................................................................................................................ 11
4
August 2003
Micrel