For product comparison, please consider:

The KSZ9897 is a fully integrated layer 2, managed,seven-port gigabit Ethernet switch with numerousadvanced features. Five of the seven ports incorporate10/100/1000 Mbps PHYs. The other two ports haveinterfaces that can be configured as SGMII, RGMII, MII or RMII.Either of these may connect directly to a host processor orto an external PHY.

Full register access is available by SPI or I2C interfaces,and by optional in-band management via any of the data ports.PHY register access is provided by a MIIM interface.

Security features include support for IEEE 802.1X port-based authentication and Access Control List (ACL) filtering.

An assortment of power-management features includingEnergy-Efficient Ethernet (EEE) have been designed in tosatisfy energy efficient environments.

Microchip's complimentary and confidential LANCheck® online design review service is available for customers who have selected our products for their application design-in. The  is subject to Microchip's  and requires a myMicrochip account.

Integrated 7-port 10/100/1000 Layer-2 switch with Gigabit uplink

  

Non-blocking wire-speed Ethernet switching fabric

Advanced Switch Capabilities

  

Full-featured forwarding and filtering control, including Access Control List (ACL) filtering

  

IEEE802.1X support (Port-Based Network Access Control)

  

IEEE802.1Q VLAN supportfor 128 active VLAN groups and the full range of 4096 VLAN IDs

  

IEEE802.1p/Q tag insertion or removal on a per port basis and support for double-tagging

  

VLAN ID tag/untag options on per port basis

  

IEEE802.3x full-duplex flow control and half-duplex back pressure collision control

  

IGMPv1/v2/v3 snooping for multicast packet filtering

  

IPv6 multicast listener discovery (MLD) snooping

  

QoS/CoS packets prioritization support: 802.1p, DiffServ-based and re-mapping of 802.1p priority field per-port basis on four priority levels

  

IPv4/IPv6 QoS support

  

Programmable rate limiting at ingress and egress ports

  

Broadcast storm protection

  

Four priority queues with dynamic packet mapping for IEEE802.1p, IPv4 DIFFSERV, IPv6 TrafficClass

  

MAC filtering function to filter or forward unknown unicast, multicast and VLAN packets

  

Self-address filtering for implementing ring topologies 

Comprehensive Configuration Register Access

  High-speed SPI (4-wire, up to 50MHz) interface to access all internal registers

  

I2C Interface to access all registers

  

MII management (MIIM, MDC/MDIO 2 wire) interface to access all PHY registers per IEEE 802.3 specification

  

In-band management to access all registers via any of the seven ports, strap enabled

  

I/O pin strapping facility to set certain register bits from I/O pins at reset time 

  Control registers configurable on-the-fly

Switch Monitoring Features

  Port mirroring/monitoring/sniffing: ingress and/or egress traffic to any port or MII/RMII

  MIB counters for fully-compliant statistics gathering (34 MIB counters per port)

Low Power Dissipation

  Full-chip software power-down

  Energy detect power-down (EDPD)

  Support IEEE P802.3az Energy Efficient Ethernet (EEE)

  Wake on LAN (WoL) support