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Microchip Technology KSZ9563R 3-Port Gigabit Ethernet Switches

Microchip Technology KSZ9563R 3-Port Gigabit Ethernet Switches integrate two Gigabit Ethernet PHY ports and one configurable Gigabit MAC port with RGMII, MII, or RMII interfaces. The switches deliver non-blocking wire-speed performance, advanced traffic management, and IEEE 1588v2 Precision Time Protocol (PTP) support for industrial networking applications.

Designed for industrial Ethernet, automation, and real-time networking systems, the Microchip KSZ9563R devices support VLANs, Quality of Service (QoS), access control lists, and IEEE 802.1X authentication. Integrated EtherGreen™ power-management features, flexible SPI/I2C management interfaces, and LinkMD® cable diagnostics help simplify network design while improving efficiency and reliability.

Features

  • Non-blocking wire-speed Ethernet switching fabric
  • Full-featured forwarding and filtering control, including Access Control List (ACL) filtering
  • Two robust ports with integrated 10/100/1000BASE-T PHYs
    • 1000BASE-T/100BASE-TX/10BASE-T IEEE 802.3
    • Fast Link-up option significantly reduces link-up time
    • Auto-negotiation and Auto-MDI/MDI-X support
    • Energy-Efficient Ethernet (EEE) support with low-power idle mode and clock stoppage
    • On-chip termination resistors and internal biasing for differential pairs to reduce power
    • LinkMD cable diagnostic capabilities for determining cable opens, shorts, and length
  • One port with 10/100/1000 Ethernet MAC and configurable interfaces
    • Reduced Gigabit Media Independent Interface (RGMII) v2.0
    • Reduced Media Independent Interface (RMII) v1.2 with 50MHz reference clock input/output option
    • Media Independent Interface (MII) in PHY/MAC mode
  • EtherSynch® IEEE 1588v2 PTP
    • Transparent Clock (TC) with auto-correction update
    • Master and slave Ordinary Clock (OC) support
    • One-step mode of operation
    • End-to-end (E2E) or peer-to-peer (P2P)
    • PTP multicast and unicast message support
    • PTP message transport over IPv4/v6 and IEEE 802.3
    • IEEE 1588v2 PTP packet filtering
  • EtherGreen power management features, including low-power standby and IEEE 802.3az
    • IEEE 802.3az EEE
    • Energy detect power-down mode on cable disconnect
    • Dynamic clock tree control
    • Unused ports can be individually powered down
    • Full-chip software power-down
    • Wake-on-LAN (WoL) standby power mode
  • Commercial/industrial temperature range support
  • 64-pin VQFN (8mm x 8mm) lead-free package
  • Flexible management interface options
    • High-speed 4-wire SPI (up to 50MHz), I2C interfaces provide access to all internal registers
    • MII Management (MIIM, MDC/MDIO 2-wire) interface provides access to all PHY registers
    • In-band management via any of the three ports
    • I/O pin strapping facility to set certain register bits from I/O pins at reset time
  • Switch management capabilities
    • 10/100/1000Mbps Ethernet switch basic functions - frame buffer management, address lookup table, queue management, and MIB counters
    • Non-blocking store-and-forward switch fabric assures fast packet delivery by utilizing a 4096-entry forwarding table with 128kB frame buffer
    • Jumbo packet support up to 9000 bytes
    • Port mirroring/monitoring/sniffing - ingress and/or egress traffic to any port
    • Rapid spanning tree protocol (RSTP) support for topology management and ring/linear recovery
    • Multiple spanning tree protocol (MSTP) support
  • Advanced switch capabilities
    • IEEE 802.1Q VLAN support for 128 active VLAN groups and the full range of 4096 VLAN IDs
    • IEEE 802.1p/Q tag insertion/removal on a per-port basis
    • VLAN ID on per-port or VLAN basis
    • IEEE 802.3x full-duplex flow control and half-duplex back pressure collision control
    • IEEE 802.1X (Port-Based Network Access Control)
    • IGMP v1/v2/v3 snooping for multicast packet filtering
    • IPv6 multicast listener discovery (MLD) snooping
    • IPv4/IPv6 QoS support, QoS/CoS packet prioritization
    • 802.1p QoS packet classification with four priority queues
    • Programmable rate limiting at ingress/egress ports

Applications

  • Industrial Ethernet (Profinet, MODBUS, and Ethernet/IP)
  • Real-time Ethernet networks
  • Industrial control/automation switches
  • Networked measurement and control systems
  • Test and measurement equipment

Specifications

  • Supply voltage ranges
    • +1.14V to +1.26V for AVDDL and DVDDL
    • +3.135V to +3.465V for AVDDH and VDDIO at 3.3V
    • +2.375V to +2.625V for AVDDH and VDDIO at 2.5V 
    • +1.71V to +1.89V for VDDIO at 1.8V
  • 50mA maximum current sunk/sourced by any I/O pin
  • Thermal
    • 22°C/W junction-to-ambient resistance
    • 1.3°C/W junction-to-case resistance
    • 0.1°C/W junction-to-case characterization
  • Ambient operating temperature ranges in still air
    • 0°C to +70°C for commercial version
    • -40°C to +85°C for industrial version
  • +125°C maximum junction temperature
  • +260°C maximum lead temperature
  • ±6kV Human Body Model (HBM) ESD performance

Internal Block Diagram

Block Diagram - Microchip Technology KSZ9563R 3-Port Gigabit Ethernet Switches
Published: 2026-11-04 | Updated: 2026-11-05