KSZ9897R 7-Port Gigabit Ethernet Switch with Two RGMII/MII/RMII Interfaces Five Integrated PHY Ports Highlights - 1000BASE-T/100BASE-TX/10BASE-Te IEEE 802.3 Non-blocking wire-speed Ethernet switching fabric - Fast Link-up option significantly reduces link-up time Full-featured forwarding and filtering control, includ- - Auto-negotiation and Auto-MDI/MDI-X support ing Access Control List (ACL) filtering - On-chip termination resistors and internal biasing for Full VLAN and QoS support differential pairs to reduce power - LinkMD cable diagnostic capabilities for determining Five ports with integrated 10/100/1000BASE-T PHY cable opens, shorts, and length transceivers Two Configurable External MAC Ports Two ports with 10/100/1000 Ethernet MACs and con- - Reduced Gigabit Media Independent Interface figurable RGMII/MII/RMII interfaces (RGMII) v2.0 IEEE 802.1X access control support - Reduced Media Independent Interface (RMII) v1.2 EtherGreen power management features, with 50MHz reference clock input/output option including low power standby - Media Independent Interface (MII) in PHY/MAC mode 2 Flexible management interface options: SPI, I C, Advanced Switch Capabilities MIIM, and in-band management via any port - IEEE 802.1Q VLAN support for 128 active VLAN Commercial/Industrial temperature range support groups and the full range of 4096 VLAN IDs 128-pin TQFP-EP (14 x 14mm) RoHS compliant pkg - IEEE 802.1p/Q tag insertion/removal on per port basis - VLAN ID on per port or VLAN basis - IEEE 802.3x full-duplex flow control and half-duplex Target Applications back pressure collision control Stand-alone 10/100/1000Mbps Ethernet switches - IEEE 802.1X access control VoIP infrastructure switches (Port-based and MAC address based) - IGMP v1/v2/v3 snooping for multicast packet filtering Broadband gateways/firewalls - IPv6 multicast listener discovery (MLD) snooping Wi-Fi access points - IPv4/IPv6 QoS support, QoS/CoS packet prioritization Integrated DSL/cable modems - 802.1p QoS packet classification with 4 priority queues Security/surveillance systems - Programmable rate limiting at ingress/egress ports Industrial control/automation switches - Broadcast storm protection Networked measurement and control systems - Four priority queues with dynamic packet mapping for IEEE 802.1p, IPv4 DIFFSERV, IPv6 Traffic Class Features - MAC filtering function to filter or forward unknown uni- cast, multicast and VLAN packets Switch Management Capabilities - Self-address filtering for implementing ring topologies - 10/100/1000Mbps Ethernet switch basic functions: Comprehensive Configuration Registers Access frame buffer management, address look-up table, 2 - High-speed 4-wire SPI (up to 50MHz), I C interfaces queue management, MIB counters provide access to all internal registers - Non-blocking store-and-forward switch fabric assures - MII Management (MIIM, MDC/MDIO 2-wire) Interface fast packet delivery by utilizing 4096 entry forwarding provides access to all PHY registers table with 256kByte frame buffer - In-band management via any of the data ports - Jumbo packet support up to 9000 bytes - I/O pin strapping facility to set certain register bits from - Port mirroring/monitoring/sniffing: I/O pins at reset time ingress and/or egress traffic to any port - On-the-fly configurable control registers - MIB counters for fully-compliant statistics gathering 34 counters per port Power Management - Tail tagging mode (one byte added before FCS) sup- - Energy detect power-down mode on cable disconnect port at host port to inform the processor which ingress - Dynamic clock tree control port receives the packet and its priority - Unused ports can be individually powered down - Loopback modes for remote failure diagnostics - Full-chip software power-down - Rapid spanning tree protocol (RSTP) support for topol- - Wake-on-LAN (WoL) standby power mode with PME ogy management and ring/linear recovery interrupt output for system wake upon triggered events - Multiple spanning tree protocol (MSTP) support 2017 Microchip Technology Inc. DS00002330B-page 1KSZ9897R 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 Documentation To obtain the most up-to-date version of this documentation, please register at our Worldwide Web site at: