KSZ8842-PMBLAM MICREL [Micrel Semiconductor], KSZ8842-PMBLAM Datasheet - Page 4
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KSZ8842-PMBLAM
Manufacturer Part Number
KSZ8842-PMBLAM
Description
2-Port Ethernet Switch with PCI Interface
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet
1.KSZ8842-PMBLAM.pdf
(119 pages)
Micrel, Inc.
Contents
Pin Configuration .............................................................................................................................................................. 9
Pins Description of KSZ8842-PMQL.............................................................................................................................. 11
Functional Description ................................................................................................................................................... 20
Functional Overview: PCI Bus Interface Unit............................................................................................................... 20
Functional Overview: Physical Layer Transceiver (PHY) ........................................................................................... 20
Functional Overview: MAC and Switch......................................................................................................................... 25
Advanced Switch Functions .......................................................................................................................................... 29
October 2007
PCI Bus Interface.......................................................................................................................................................... 20
TXDMA Logic and TX Buffer Manager ......................................................................................................................... 20
RXDMA Logic and RX Buffer Manager ........................................................................................................................ 20
100BASE-TX Transmit.................................................................................................................................................. 20
100BASE-TX Receive................................................................................................................................................... 20
PLL Clock Synthesizer (Recovery) ............................................................................................................................... 21
Scrambler/De-scrambler (100BASE-TX Only).............................................................................................................. 21
10BASE-T Transmit ...................................................................................................................................................... 21
10BASE-T Receive ....................................................................................................................................................... 21
Power Management...................................................................................................................................................... 21
MDI/MDI-X Auto Crossover .......................................................................................................................................... 21
Auto Negotiation ........................................................................................................................................................... 23
LinkMD Cable Diagnostics............................................................................................................................................ 24
Address Lookup ............................................................................................................................................................ 25
Learning ........................................................................................................................................................................ 25
Migration ....................................................................................................................................................................... 25
Aging ............................................................................................................................................................................. 25
Forwarding .................................................................................................................................................................... 26
Switching Engine .......................................................................................................................................................... 27
MAC Operation ............................................................................................................................................................. 28
Inter Packet Gap (IPG) ................................................................................................................................................. 28
Back-Off Algorithm........................................................................................................................................................ 28
Late Collision ................................................................................................................................................................ 28
Illegal Packet Size......................................................................................................................................................... 28
Flow Control.................................................................................................................................................................. 28
Half-Duplex Backpressure ............................................................................................................................................ 28
Broadcast Storm Protection .......................................................................................................................................... 29
Repeater Mode ............................................................................................................................................................. 29
Clock Generator............................................................................................................................................................ 29
Spanning Tree Support................................................................................................................................................. 29
IGMP Support ............................................................................................................................................................... 30
IPv6 MLD Snooping ...................................................................................................................................................... 30
Port Mirroring Support................................................................................................................................................... 30
IEEE 802.1Q VLAN Support ......................................................................................................................................... 31
QoS Priority Support ..................................................................................................................................................... 31
Port-Based Priority........................................................................................................................................................ 31
802.1p-Based Priority ................................................................................................................................................... 32
DiffServ based Priority .................................................................................................................................................. 32
Rate Limiting Support ................................................................................................................................................... 32
MAC Filtering Function ................................................................................................................................................. 33
Straight Cable....................................................................................................................................................... 22
Crossover Cable................................................................................................................................................... 23
Access.................................................................................................................................................................. 24
Usage ................................................................................................................................................................... 25
“IGMP” Snooping.................................................................................................................................................. 30
“Multicast Address Insertion” in the Static MAC Table......................................................................................... 30
4
KSZ8842-PMQL/PMBL
M9999-100207-1.5