KSZ8842-PMQL/PMBL Two-Port Ethernet Switch with PCI Interface QoS/CoS Packets Prioritization Support Features Per Port, 802.1p and DiffServ Based Switch Management Re-Mapping of 802.1p Priority Field on a Per Port Non-Blocking Switch Fabric Assures Fast Packet Basis Delivery by Utilizing a 1K Entry MAC Address Power Modes, Packaging, and Power Supplies Look-Up Engine and a Store-and-Forward Architecture Full-chip Hardware Power-Down (Register Con- Fully Compliant with the IEEE802.3u Standards figuration not Saved) Provides for Low Power Dissipation Full-Duplex IEEE 802.3x Flow Control (Pause) with Force Mode Option Per Port-Based Software Power-Save on PHY (Idle Link Detection, Register Configuration Pre- Half-Duplex Backpressure Flow Control served) Advance Switch Management Single Power Supply: 3.3V IEEE 802.1Q VLAN Support for Up to Sixteen Commercial Temperature Range: 0C to +70C Goups (Full-Range of VLAN IDs) Industrial Temperature Range: 40C to +85C VLAN ID Tag/Untag Options, Per Port Basis Available in 128-Pin PQFP and 100-Ball LFBGA IEEE 802.1p/Q Tag Insertion or Removal On a Per-Port Basis (Egress) Additional Features Programmable Rate Limiting at the Ingress and Egress Port In Addition to Offering All of the Features of an Integrated Layer-Two Managed Switch, the Broadcast Storm Protection KSZ8842-PMQL/PMBL Offers: IEEE 802.1d Spanning Tree Protocol Support Repeater Mode Capabilities to Allow for Cut MAC Filtering Function to Filter Unicast Packets Through in Latency Critical Industrial Ethernet or Unknown MAC Address Forwarding Function Embedded Ethernet Applications Direct Forwarding Mode Enabling the Processor Dynamic Buffer Memory Scheme Essential for to Identify the Ingress Port and to Specify the Applications Such as Video Over IP Where Image Egress Port Jitter is Unacceptable IGMP v1/v2 Snooping Support for Multicast T wo-Port Switch with a 32-Bit/33 MHz PCI Packet Filtering Processor Interface. IPV6 Multicast Listener Discovery (MLD) Snoop- Microchip LinkMD Cable Diagnostics to ing support Determine Cable Length, Diagnose Faulty Monitoring Cables, and Determine Distance-to-Fault Port Mirroring/Monitoring/Sniffing: Ingress and/or Hewlett Packard (HP) Auto MDI-X Crossover with Egress Traffic to Any Port Disable and Enable Options Management Information Base (MIB) Counters Four Priority Queues to Handle Voice, Video, for Fully Compliant Statistics Gathering: 32 MIB Data, and Control Packets Counters Per Port Ability to Transmit and Receive Jumbo Frame Loop Back Modes for Remote Failure Diagnostics 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 KSZ8842- PMQL/PMBL Switch Registers are Used to Support Transceiver Control and Status. They are Configurable On- the-Fly (Port-Priority, 802.1p/d/Q, etc.) 2020 Microchip Technology Inc. 1DS00003524A-page 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.