KSZ8842-PMQL

KSZ8842-PMQL/PMBL Two-Port Ethernet Switch with PCI Interface Features QoS/CoS Packets Prioritization Support Switch Management • Per Port, 802.1p and DiffServ Based • Re-Mapping of 802.1p Priority Field on a Per Port Basis • Non-Blocking Switch Fabric Assures Fast Packet Delivery by Utilizing a 1K Entry MAC Address Look-Up Engine and a Store-and-Forward Architecture • Fully Compliant with the IEEE802.3u Standards • Full-Duplex IEEE 802.3x Flow Control (Pause) with Force Mode Option • Half-Duplex Backpressure Flow Control Advance Switch Management • IEEE 802.1Q VLAN Support for Up to Sixteen Goups (Full-Range of VLAN IDs) • VLAN ID Tag/Untag Options, Per Port Basis • IEEE 802.1p/Q Tag Insertion or Removal On a Per-Port Basis (Egress) • Programmable Rate Limiting at the Ingress and Egress Port • Broadcast Storm Protection • IEEE 802.1d Spanning Tree Protocol Support • MAC Filtering Function to Filter Unicast Packets • Unknown MAC Address Forwarding Function • Direct Forwarding Mode Enabling the Processor to Identify the Ingress Port and to Specify the Egress Port • IGMP v1/v2 Snooping Support for Multicast Packet Filtering • IPV6 Multicast Listener Discovery (MLD) Snooping support Monitoring • Port Mirroring/Monitoring/Sniffing: Ingress and/or Egress Traffic to Any Port • Management Information Base (MIB) Counters for Fully Compliant Statistics Gathering: 32 MIB Counters Per Port • Loop Back Modes for Remote Failure Diagnostics Power Modes, Packaging, and Power Supplies • Full-chip Hardware Power-Down (Register Configuration not Saved) Provides for Low Power Dissipation • Per Port-Based Software Power-Save on PHY (Idle Link Detection, Register Configuration Preserved) • Single Power Supply: 3.3V • Commercial Temperature Range: 0°C to +70°C • Industrial Temperature Range: –40°C to +85°C • Available in 128-Pin PQFP and 100-Ball LFBGA Additional Features • In Addition to Offering All of the Features of an Integrated Layer-Two Managed Switch, the KSZ8842-PMQL/PMBL Offers: • Repeater Mode Capabilities to Allow for Cut Through in Latency Critical Industrial Ethernet or Embedded Ethernet Applications • Dynamic Buffer Memory Scheme Essential for Applications Such as Video Over IP Where Image Jitter is Unacceptable • Two-Port Switch with a 32-Bit/33 MHz PCI Processor Interface. • Microchip LinkMD® Cable Diagnostics to Determine Cable Length, Diagnose Faulty Cables, and Determine Distance-to-Fault • Hewlett Packard (HP) Auto MDI-X Crossover with Disable and Enable Options • Four Priority Queues to Handle Voice, Video, Data, and Control Packets • Ability to Transmit and Receive Jumbo Frame Sizes Up to 1916 Bytes Comprehensive Register Access • There are Three Kinds of Register Groups: • The PCI Configuration Registers are Used to Initialize and Configure the PCI Interface • The PCI Control/Status Registers are Used to Communicate Between the Host and KSZ8842PMQL/PMBL • Switch Registers are Used to Support Transceiver Control and Status. They are Configurable Onthe-Fly (Port-Priority, 802.1p/d/Q, etc.)  2020 Microchip Technology Inc. DS00003524A-page 1 KSZ8842-PMQL/PMBL Applications • • • • • • • • Video Distribution Systems High-End Cable, Satellite, and IP Set-Top Boxes Video Over IP Voice Over IP (VoIP) and Analog Telephone Adapters (ATA) Industrial Control in Latency Critical Applications Motion Control Industrial Control Sensor Devices (Temperature, Pressure, Levels, and Valves) Security and Surveillance Cameras Markets • Fast Ethernet • Embedded Ethernet • Industrial Ethernet DS00003524A-page 2  2020 Microchip Technology Inc. KSZ8842-PMQL/PMBL TO OUR VALUED CUSTOMERS It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and enhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via E-mail at docerrors@microchip.com. We welcome your feedback. Most Current Data Sheet To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at: http://www.microchip.com You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page. The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000). Errata An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision of silicon and revision of document to which it applies. To determine if an errata sheet exists for a particular device, please check with one of the following: • Microchip’s Worldwide Web site; http://www.microchip.com • Your local Microchip sales office (see last page) When contacting a sales office, please specify which device, revision of silicon and data sheet (include -literature number) you are using. Customer Notification System Register on our web site at www.microchip.com to receive the most current information on all of our products.  2020 Microchip Technology Inc. DS00003524A-page 3 KSZ8842-PMQL/PMBL Table of Contents 1.0 Introduction ..................................................................................................................................................................................... 5 2.0 Pin Description and Balls Configuration .......................................................................................................................................... 6 3.0 Functional Description ................................................................................................................................................................... 17 4.0 Register Descriptions .................................................................................................................................................................... 33 5.0 Operational Characteristics ......................................................................................................................................................... 113 6.0 Electrical Characteristics ............................................................................................................................................................. 114 7.0 Timing Specifications .................................................................................................................................................................. 115 8.0 Selection of Isolation Transformers ............................................................................................................................................. 118 9.0 Package Outline .......................................................................................................................................................................... 119 Appendix A: Data Sheet Revision History ......................................................................................................................................... 122 The Microchip Web Site .................................................................................................................................................................... 123 Customer Change Notification Service ............................................................................................................................................. 123 Customer Support ............................................................................................................................................................................. 123 Product Identification System ............................................................................................................................................................ 124 DS00003524A-page 4  2020 Microchip Technology Inc. KSZ8842-PMQL/PMBL 1.0 INTRODUCTION 1.1 General Description The KSZ8842-series of 2-port switches includes PCI and non-PCI CPU interfaces. This data sheet describes the KSZ8842-PMQL/PMBL PCI CPU interface chips. KSZ8842-PMQL is PQFP package chip, KSZ8842-PMBL is LFBGA package chip. For information on the KSZ8842-MQL/MBL CPU non-PCI interface switches, refer to the KSZ8842-MQL/ MBL data sheet. The KSZ8842-PMQL/PMBL is the industry’s first fully managed two-port switch with a 32 bit/33MHz PCI processor interface. It is a proven, fourth generation, integrated layer two switch that is compliant with the IEEE 802.3u standard. An industrial temperature grade version of the KSZ8842-PMQL/PMBL, also can be ordered the KSZ8842-PMQLI/PMBL AM. The KSZ8842-PMQL/PMBL can be configured as a switch or as a low-latency (