KSZ8842-PMQLI

Switch Management
• 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
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 Onthe-Fly (Port-Priority, 802.1p/d/Q, etc.)
QoS/CoS Packets Prioritization Support
• Per Port, 802.1p and DiffServ Based
• Re-Mapping of 802.1p Priority Field on a Per Port
Basis
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