Integrierte Schaltungen

KSZ9031RNXVB-TRVAO

KSZ9031RNXVB-TRVAO - Gigabit Ethernet Transceiver, RGMII, QFN-48 | Microchip

The Microchip Technology KSZ9031RNXVB-TRVAO is a completely integrated triple-speed (10Base-T/100Base-TX/1000Base-T) Gigabit Ethernet physical-layer transceiver with RGMII support, supplied in a 48-pin lead-free WQFN package. It offers full-duplex data transmission and reception on standard CAT-5 unshielded twisted pair (UTP) cable, delivers a 125 MHz reference clock output, and includes an energy-detect power-down mode that reduces consumption when no cable is attached. AEC-Q100 qualified for automotive Ethernet applications. A Gigabit Ethernet physical-layer transceiver (PHY) is the analog front-end IC that connects a digital MAC/controller to the copper media, handling line encoding/decoding, echo cancellation, cross-talk suppression, and link-training required for 1000BASE-T operation. The KSZ9031 belongs to the broader Ethernet PHY family (10/100/1000 transceiver -> Ethernet transceiver -> network interface IC -> semiconductor). It sits at OSI layer 1 of the networking stack, upstream of magnetics and RJ-45 connector, and downstream of the MAC-side RGMII/SGMII interface. Key features include 10/100/1000 Mbps triple-speed auto-negotiation, RGMII v1.3 / v2.0 MAC-side interface with HSTL or 1.8/2.5/3.3V selectable I/O, on-chip termination resistors for differential pairs, baseline wander correction, programmable LED outputs for link/activity/speed, and Wake-on-LAN (WOL) support with custom-packet detection. A low-latency 1000BASE-T receive path and integrated 1.2V LDO simplify BOM. Architecture is built on a DSP-based echo canceller and AFE using a 0.13um CMOS process, integrating all active magnetics-less PHY functions except the 1:1 isolation transformer and RJ-45. Reference clock can be sourced from a 25 MHz crystal or external oscillator. JTAG boundary-scan support is provided for board-level test. Typical applications include automotive infotainment Ethernet backbones, industrial Ethernet switches/routers, set-top box and IPTV MAC interfaces, network printers, gigabit uplink PHY for SBCs/SoCs, and ADAS camera networks. The 48-WQFN package is footprint-compatible with other KSZ9031 family members and several third-party Gigabit PHYs, easing dual-sourcing. When designing, place the KSZ9031 within 1 cm of the magnetics and route each MDI pair as a 100-ohm differential with intra-pair length matching under 0.5 mm. Provide a solid GND reference on layer 2 under the PHY, and decouple AVDD/AVDDPLL/DVDD with 0.1uF X7R plus 10uF bulk capacitors as close to each pin as possible. This page synthesizes distributor pricing, automotive-grade alternatives, and PCB-layout design notes beyond the manufacturer datasheet summary to support rapid PHY selection for Gigabit Ethernet designs.

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KSZ9031RNXVB-VAO

KSZ9031RNXVB-VAO - Gigabit Ethernet RGMII Transceiver AEC-Q100 | Microchip

The Microchip Technology KSZ9031RNXVB-VAO is a single-chip 10/100/1000 Mbps IEEE 802.3 compliant Gigabit Ethernet transceiver with RGMII (Reduced Gigabit Media Independent Interface) support, housed in a 48-pin lead-free WQFN (wettable-flank) package. The -VAO suffix designates the AEC-Q100 automotive-qualified variant, and the RNXVB sub-family integrates on-chip RGMII Version 2.0 compliant TX/RX clock-to-data skew with programming options for external delay timing and per-path delay correction, eliminating PCB-level delay lines. A Gigabit Ethernet transceiver is a physical-layer device that connects a MAC (Media Access Controller) to the copper medium via twisted-pair magnetics, encoding/decoding 1000BASE-T/100BASE-TX/10BASE-T signaling and providing PCS, PMA, and PHY functions defined by IEEE 802.3 clauses 22-40. The KSZ9031 family belongs to the Ethernet PHY hierarchy (Ethernet transceiver -> physical layer device -> network interface IC) and supports GMII/MII or RGMII MAC-side interfaces depending on sub-variant, sitting between the SoC MAC and the RJ45/Magnetics front-end. Key features include 3.3V/2.5V/1.8V tolerant MAC-side I/Os, on-chip termination resistors, AEC-Q100 Grade 2 qualification (-40C to +105C), Energy-Efficient Ethernet (EEE) support per IEEE 802.3az, Wake-on-LAN, auto-negotiation with HP Auto-MDIX, and remote/local loopback for diagnostic verification of both analog and digital data paths. The WQFN wettable-flank package enables automated optical inspection (AOI) of solder joints - critical for automotive PCB assembly. Architecturally, the device integrates a DSP-based baseband processor, a low-noise analog front-end with on-chip LDO regulators, and an RGMII interface block that supports RGMII-ID (internal delay on TX, RX, or both). It interfaces directly to a single 3.3V supply (with internal regulation generating 1.2V core rails), reducing external BOM. Typical power consumption is approximately 450 mW active at 1 Gbps and 80 mW in EEE LPI state. Typical applications include automotive infotainment Ethernet, ADAS camera links, in-vehicle networking backbones, industrial Ethernet switches, and any design requiring a 1 Gbps RGMII PHY qualified for harsh environments. Compared to consumer-grade KSZ9031RNX (standard QFN-48), the -VAO part uses wettable-flank leads for solder joint inspection. When designing in, route the 125 MHz RGMII clock and data signals with matched impedance (typically 50 ohm SE) and length-matching to within the RGMII v2.0 spec (typically 50 mil tolerance on the PCB). Use a 25 MHz external crystal or 125 MHz LVCMOS reference; configure strap pins or MDIO registers for desired clock delay mode. This page synthesizes distributor pricing, drop-in alternatives from the same KSZ9031 family and across brands, and practical PCB layout notes not always summarized in the manufacturer datasheet.

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KSZ9131MNXC

KSZ9131MNXC - Gigabit Ethernet Transceiver | Microchip

The Microchip Technology KSZ9131MNXC is a single-chip 10/100/1000 Mbps Gigabit Ethernet transceiver with GMII, MII, and RGMII interfaces, IEEE 802.3 compliance, and 3.3 V, 2.5 V, and 1.8 V-tolerant I/O in a 64-pin QFN package measuring 8 x 8 mm. It supports automatic selection of link speed and duplex mode. A Gigabit Ethernet physical-layer transceiver converts parallel digital data into differential Ethernet signals and converts received signals back into data for a network controller or switching fabric. The KSZ9131MNXC belongs to the Ethernet transceiver hierarchy that includes PHY devices, physical-layer ICs, interface ICs, and semiconductor components. Its integrated termination and power-management features simplify the connection between an Ethernet medium and a digital system. The device handles 10, 100, and 1000 Mbps operation and provides auto-negotiation for automatic link-speed and duplex selection. GMII, MII, and RGMII interfaces give designers options for connecting network processors, switching silicon, routers, and embedded equipment. The I/O circuitry tolerates 3.3 V, 2.5 V, and 1.8 V signals, supporting lower-voltage host interfaces while the core can operate from a single 3.3 V supply. On-chip termination resistors are provided for the differential pairs, reducing the number of external matching components required on a typical Ethernet implementation. An on-chip LDO controller supports single 3.3 V supply operation and requires one external FET to generate the internal core voltage. These features are especially useful when board area, component count, and repeatable high-speed layout are priorities. Typical applications include industrial Ethernet equipment, network switches, routers, embedded control systems, telecom edge hardware, test and measurement instruments, and network-connected appliances. The combination of Gigabit data-rate support and multiple parallel interface options allows one transceiver family to cover widely different system-clock and bus architectures. Layout remains the primary design consideration because differential Ethernet pairs must be routed as controlled-impedance transmission lines with minimal impedance discontinuities. Follow the pin-description table and reference-layout guidance in the manufacturer datasheet for exact pin assignments, component placement, via placement, and layer-transition geometry. Confirm signal-integrity, magnetics, power-supply, and thermal requirements at the system level. This page combines manufacturer specifications, pin and package information, drop-in replacement analysis, interface-specific comparison data, and practical PCB-design guidance. It is intended to accelerate component selection, schematic review, footprint verification, and Ethernet-interface implementation without reducing the decision to a list of headline speed ratings.

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KSZ9131MNXI

KSZ9131MNXI - Gigabit Ethernet Transceiver | Microchip

Microchip KSZ9131MNXI is a single-chip Gigabit Ethernet transceiver supporting 10, 100, and 1000 Mbps operation through IEEE 802.3-compliant GMII, MII, and RGMII interfaces. The device supports 3.3 V, 2.5 V, and 1.8 V tolerant I/O operation and is packaged in a 64-pin QFN measuring 8 mm by 8 mm. Automatic negotiation selects the highest supported link speed and duplex mode. An Ethernet transceiver converts between a digital media-access-control interface and differential Ethernet signals. It belongs to the hierarchy of Ethernet interface controllers, physical-layer transceivers, interface ICs, and semiconductors. By integrating the digital interface, analog transmit and receive functions, clocking, and termination functions in one device, the KSZ9131MNXI can simplify the physical layer of an Ethernet equipment design. The principal features include support for GMII, MII, and RGMII host interfaces, automatic speed and duplex negotiation, integrated termination resistors for differential pairs, and an on-chip LDO controller. The LDO controller supports operation from a single 3.3 V supply while requiring one external FET to generate the internal core supply. Voltage-tolerant I/O operation allows the host-facing interface to use 3.3 V, 2.5 V, or 1.8 V signal levels according to the system design. The KSZ9131 family supports both RGMII and reduced-pin interface arrangements through its configuration strap inputs. After power-up or reset, the device enters RGMII operation when the MODE[3:0] straps select an RGMII-capable configuration. This configurability allows one transceiver family to support multiple Ethernet equipment architectures, although the selected interface determines the host-side timing, pin connections, and external circuitry required by the design. Typical uses include industrial Ethernet gateways, network switches, routers, set-top equipment, test instruments, and embedded network-access controllers. The 10/100/1000 Mbps capability makes the device appropriate for links that may negotiate down to 100 Mbps or 10 Mbps when the connected equipment or cable configuration does not support gigabit operation. The integrated termination resistors also reduce the number of external components required around the differential Ethernet pairs. Hardware implementation requires careful treatment of power integrity and signal integrity. The variable DVDDH supply should be connected to the selected 3.3 V, 2.5 V, or 1.8 V I/O rail, with a bulk capacitor near the supply source to limit startup droop. Decoupling capacitors should be positioned as close as practical to the device pins to suppress high-frequency noise and reduce susceptibility to EMI coupling. This product summary combines the manufacturer interface capabilities, package information, configuration details, and hardware implementation guidance into a design-focused reference. It also provides application context, drop-in candidate evaluation, and practical PCB guidance for engineers developing 10/100/1000 Mbps Ethernet equipment.

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KSZ9131RNXC

KSZ9131RNXC - Gigabit Ethernet PHY Transceiver, RGMII, QFN-48 (Tape & Reel)

The Microchip Technology KSZ9131RNXC is an integrated triple-speed (10Base-T/100Base-TX/1000Base-T) Gigabit Ethernet physical-layer transceiver that supports transmission and reception over standard CAT-5, CAT-5e, and CAT-6 unshielded twisted pair cable, housed in a 48-pin QFN (7x7 mm) package. It features RGMII/GMII/MII MAC-side interfacing, an integrated 1.25 GHz PLL, on-chip termination, and LinkMD cable diagnostics for cable-plant fault detection. The device operates from a single 3.3V supply with internal 1.2V LDO regulation and consumes roughly 600 mW typical during 1000Base-T link operation. It is AEC-Q100 qualified for automotive Ethernet in-vehicle networking. An Ethernet PHY (physical layer transceiver) is a mixed-signal IC that converts digital MAC frames into analog line signals for transmission over copper twisted pair, then recovers and decodes incoming signals back into digital data. The PHY sits below the MAC layer in the OSI model and handles line coding (PAM-16 for 1000Base-T, MLT-3 for 100Base-TX, and Manchester for 10Base-T), echo cancellation, crosstalk mitigation, clock and data recovery, and link-training. The KSZ9131 belongs to the gigabit Ethernet PHY family, which is a subset of Ethernet interface ICs in the broader interface IC category under integrated circuits. Key features of the KSZ9131RNXC include auto-negotiation and HP Auto-MDI/MDIX crossover at all three speeds, Energy Efficient Ethernet (EEE) IEEE 802.3az support, Wake-on-LAN, four programmable LED indicators, JTAG boundary-scan support, and a 1.8V/2.5V/3.3V tolerant RGMII I/O interface. The device uses a DSP-based architecture with echo and near-end/far-end crosstalk cancellers to achieve the 100-meter CAT-5 link budget required by IEEE 802.3. The KSZ9131 is built on a low-power CMOS process and uses adaptive equalization plus baseline wander correction to maintain robust performance over installed cable. Its integrated termination resistors eliminate the need for external 100-ohm resistor networks on each differential pair, reducing BOM count by about 8 resistors per port. The device supports both GMII and RGMII MAC interfaces, selectable at reset via strap pins. Typical applications include automotive in-vehicle networking gateways, industrial Ethernet switches and gateways, IP cameras and surveillance equipment, network routers and access points, and embedded industrial automation systems using EtherCAT or PROFINET. The automotive-grade qualification (AEC-Q100) makes it especially suited for telematics control units, ADAS sensor hubs, and zonal architectures that require Gigabit Ethernet over single twisted pair or quad twisted pair cabling. When designing with the KSZ9131, allocate a 50 MHz reference clock source (crystal or oscillator) and follow the reference layout in the datasheet. Both 3.3V and 1.2V rails are required (the 1.2V is generated internally from the 3.3V supply). Maintain 100-ohm differential impedance on MDI traces and keep the analog ground island isolated from digital switching returns to preserve SNR. This page consolidates distributor pricing, verified drop-in alternatives, and practical PCB layout considerations that complement the manufacturer datasheet and migration guide AN2918.

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KSZ9131RNXC-TR

KSZ9131RNXC-TR - Gigabit Ethernet PHY Transceiver, RGMII, QFN-48

The Microchip Technology KSZ9131RNXC-TR is an integrated triple-speed (10Base-T/100Base-TX/1000Base-T) Gigabit Ethernet physical-layer transceiver that supports transmission and reception over standard CAT-5, CAT-5e, and CAT-6 unshielded twisted pair cable, housed in a 48-pin QFN (7x7 mm) package. It features RGMII/GMII/MII MAC-side interfacing, an integrated 1.25 GHz PLL, on-chip termination, and LinkMD cable diagnostics for cable-plant fault detection. The device operates from a single 3.3V supply with internal 1.2V LDO regulation and consumes roughly 600 mW typical during 1000Base-T link operation. It is AEC-Q100 qualified for automotive Ethernet in-vehicle networking. An Ethernet PHY (physical layer transceiver) is a mixed-signal IC that converts digital MAC frames into analog line signals for transmission over copper twisted pair, then recovers and decodes incoming signals back into digital data. The PHY sits below the MAC layer in the OSI model and handles line coding (PAM-16 for 1000Base-T, MLT-3 for 100Base-TX, and Manchester for 10Base-T), echo cancellation, crosstalk mitigation, clock and data recovery, and link-training. The KSZ9131 belongs to the gigabit Ethernet PHY family, which is a subset of Ethernet interface ICs in the broader interface IC category under integrated circuits. Key features of the KSZ9131RNXC-TR include auto-negotiation and HP Auto-MDI/MDIX crossover at all three speeds, Energy Efficient Ethernet (EEE) IEEE 802.3az support, Wake-on-LAN, four programmable LED indicators, JTAG boundary-scan support, and a 1.8V/2.5V/3.3V tolerant RGMII I/O interface. The device uses a DSP-based architecture with echo and near-end/far-end crosstalk cancellers to achieve the 100-meter CAT-5 link budget required by IEEE 802.3. The KSZ9131 is built on a low-power CMOS process and uses adaptive equalization plus baseline wander correction to maintain robust performance over installed cable. Its integrated termination resistors eliminate the need for external 100-ohm resistor networks on each differential pair, reducing BOM count by about 8 resistors per port. The device supports both GMII and RGMII MAC interfaces, selectable at reset via strap pins. Typical applications include automotive in-vehicle networking gateways, industrial Ethernet switches and gateways, IP cameras and surveillance equipment, network routers and access points, and embedded industrial automation systems using EtherCAT or PROFINET. The automotive-grade qualification (AEC-Q100) makes it especially suited for telematics control units, ADAS sensor hubs, and zonal architectures that require Gigabit Ethernet over single twisted pair or quad twisted pair cabling. When designing with the KSZ9131, allocate a 50 MHz reference clock source (crystal or oscillator) and follow the reference layout in the datasheet. Both 3.3V and 1.2V rails are required (the 1.2V is generated internally from the 3.3V supply). Maintain 100-ohm differential impedance on MDI traces and keep the analog ground island isolated from digital switching returns to preserve SNR. This page consolidates distributor pricing, verified drop-in alternatives, and practical PCB layout considerations that complement the manufacturer datasheet and migration guide AN2918.

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KSZ9131RNXI

KSZ9131RNXI - Gigabit Ethernet Transceiver | Microchip

The Microchip Technology KSZ9131RNXI is a single-chip 10/100/1000 Mbps Ethernet transceiver supporting GMII, MII, and RGMII interfaces in a 48-QFN package measuring 7 x 7 mm. The device is IEEE 802.3 compliant, supports automatic negotiation of link speed and duplex mode, and accepts 3.3 V, 2.5 V, and 1.8 V-tolerant I/O levels. It also provides a 125 MHz reference-clock output, on-chip termination resistors for differential pairs, and an on-chip LDO controller that permits single 3.3 V supply operation with one external FET. A Gigabit Ethernet transceiver, also called an Ethernet PHY, converts between digital MAC-layer data and analog signals carried over twisted-pair cabling. The KSZ9131 belongs to the interface IC hierarchy: Ethernet PHY > physical-layer transceiver > network interface IC > semiconductor. Integrating copper-pair drivers, receivers, clocking, link management, and diagnostics into one device simplifies the hardware around a network processor, gateway, router, or industrial controller. Key features include automatic selection among 10, 100, and 1000 Mbps speeds and half- or full-duplex operation. Programmable LED outputs report link, activity, and speed status. Wake-on-LAN support uses custom-packet detection, while an energy-detect power-down mode reduces consumption when a cable is not attached. The integrated LinkMD time-domain-reflectance diagnostic helps identify faults in installed copper cabling, and baseline-wander correction supports reliable receive performance. The KSZ9131 supports GMII, MII, and RGMII host interfaces, giving designers several options for connecting the PHY to an Ethernet MAC. At 1000 Mbps, RGMII uses both edges of a 125 MHz clock for data and control signals, corresponding to an 8 ns clock period as defined by the RGMII 2.0 specification. Differential-pair termination is integrated on chip, reducing the number of external matching components. An external FET and the device's LDO controller support a compact single-3.3 V power architecture. Typical uses include industrial Ethernet equipment, routers, gateways, switches, embedded network controllers, and other systems requiring 10/100/1000-Mbps copper connectivity. The transceiver can also suit application-specific equipment that needs programmable link and activity indicators, cable diagnostics, reduced standby consumption, or Wake-on-LAN behavior. The combination of IEEE 802.3 operation, automatic negotiation, and multiple MAC-interface options supports both standard and compact network designs. When designing the PCB, preserve the recommended high-speed copper routing and separation between transmit and receive paths. Follow the manufacturer's pin-description table when assigning power, ground, clock, RGMII, and magnetics-interface signals. Confirm the external-FET configuration and decoupling requirements directly against the manufacturer datasheet before releasing the layout, because incorrect termination or clock topology can affect signal integrity and auto-negotiation. This product page combines manufacturer specifications, package details, interface capabilities, application guidance, and compatibility-focused alternatives. It also organizes the principal engineering decisions around clocking, power architecture, cable diagnostics, and PCB implementation so that design teams can assess the KSZ9131RNXI before beginning a new Ethernet interface layout.

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KSZ9477STXI

KSZ9477STXI - 7-Port Gigabit Ethernet Switch | Microchip

The Microchip Technology KSZ9477STXI is a fully integrated, managed seven-port Gigabit Ethernet switch with five integrated 10/100/1000 Mbps copper PHYs and two configurable serial interfaces. It supports SGMII, RGMII, MII, and RMII connectivity and is controlled through I2C or SPI. The device is supplied in a 128-pin TQFP exposed-pad package measuring 14 x 14 mm and is identified as an industrial-temperature variant. An Ethernet switch is a network-semiconductor device that receives Ethernet frames on one port, processes Layer 2 information, and forwards traffic to one or more destination ports. The KSZ9477 belongs to the managed-switch hierarchy: Ethernet switch, Layer 2 managed Gigabit Ethernet switch, Ethernet interface controller, and semiconductor. Integrating five copper PHYs, two configurable interfaces, management logic, and advanced traffic features reduces the number of discrete network components required in industrial and communications equipment. Verified distributor information identifies ring redundancy, IEEE 1588 v2 support, AVB, Energy Efficient Ethernet, Wake-on-LAN, QoS, LinkMD+, and SGMII support. These features support deterministic traffic handling, synchronized networks, reduced power during low activity, fault recovery, and flexible PHY uplinks. The two non-PHY ports can be configured for SGMII, RGMII, MII, or RMII according to the manufacturer product description, allowing the switch to connect a mix of copper and processor-facing network interfaces. The KSZ9477STXI combines five integrated Gigabit PHYs with two configurable ports in one network device. Its management interfaces support I2C and SPI, while its Layer 2 feature set covers timing-sensitive traffic, redundancy, power efficiency, and link diagnostics. Compared with a discrete multi-PHY design, consolidation can reduce board-level component count, simplify firmware control, and centralize port configuration and status monitoring. Typical installations use the KSZ9477 in industrial Ethernet controllers, networked automation equipment, communications infrastructure, embedded systems, and managed edge devices. Copper ports can connect sensors, programmable logic controllers, industrial computers, and field equipment, while SGMII or RGMII ports can connect a host processor or additional network interface. System designers must confirm the manufacturer datasheet for electrical limits, clocking requirements, supported media configurations, strap settings, exposed-pad layout, and firmware sequencing. For PCB implementation, provide the datasheet-specified power and decoupling networks, route each differential copper pair as a controlled-impedance differential pair, and preserve the exposed-pad copper and via arrangement. Provide independent clocking, reset, and management-interface pull-ups or pull-downs exactly as specified. Validate media, firmware, thermal performance, fault-recovery behavior, and timing margins before production release. This page combines the verified Microchip product description with distributor feature, interface, package, and sourcing data. It adds application guidance, PCB cautions, and selection context without inventing electrical limits, prices, pin assignments, or unsupported replacement claims.

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KSZ9563RNXC

KSZ9563RNXC - 3-Port Gigabit Ethernet Switch | Microchip

Microchip Technology KSZ9563RNXC is a three-port Gigabit Ethernet switch with MII, RMII, and RGMII interfaces, supplied in a 64-QFN package measuring 8 x 8 mm. According to the Microchip product page, the device supports IEEE 1588v2 Precision Timing Protocol and EtherSynch, positioning it for synchronized industrial, automotive, and communications networks. An Ethernet switch is a network-semiconductor category that connects multiple Ethernet ports, forwards frames between them, and manages physical-layer network traffic. The KSZ9563 integrates three Gigabit Ethernet ports into one device, reducing the component count required for a multiport network node compared with discrete Ethernet PHY implementations. This integration places the KSZ9563 within the broader hierarchy of Ethernet controllers, network interface controllers, and semiconductor components. The switch combines RGMII, RMII, and MII host interfaces with IEEE 1588v2 timing support. Microchip also identifies AVB, Energy Efficient Ethernet, Wake-on-LAN, quality-of-service, and LinkMD features for the KSZ9563 family. These capabilities support designs requiring precise packet timing, traffic prioritization, reduced link energy, remote wake behavior, and PHY-status monitoring within a compact network interface subsystem. The RGMII interface supports high-throughput connections to a host processor or dedicated switching logic, while RMII and MII provide alternatives for systems using different host bus architectures. IEEE 1588v2 Precision Timing Protocol allows participating network devices to maintain precise time relationships, which is useful when measurements or events must be correlated across multiple nodes. EtherSynch provides additional timing synchronization capability for compatible network designs. Typical uses include industrial Ethernet equipment, factory automation controllers, automotive in-vehicle networking systems, synchronized test equipment, communications infrastructure, and embedded network gateways. In these systems, the three integrated ports can connect local endpoints and upstream network segments while reducing the number of separate Ethernet PHY devices required at the board edge. The principal design consideration is interface selection. A board using RGMII must provide the corresponding data and control paths, while RMII and MII designs require different clocking and signal arrangements. Validate the selected interface against the host processor, magnetics, connector layout, reference clock, and reset architecture before finalizing the PCB because changing host-interface choices is not a footprint-only substitution. This page organizes the KSZ9563RNXC capabilities, application guidance, package information, and procurement questions into one engineering reference. It also distinguishes confirmed device functions from specifications that require confirmation in the manufacturer datasheet, helping designers plan interface selection and PCB implementation before releasing hardware.

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KSZ9563RNXI

KSZ9563RNXI - 3-Port Gigabit Ethernet Switch | Microchip

The Microchip Technology KSZ9563RNXI is a highly integrated three-port Gigabit Ethernet switch with one 10/100/1000 Base-T Ethernet MAC and configurable RGMII, MII, or RMII interface in a 64-QFN package measuring 8 mm by 8 mm. It combines Ethernet switching, precision timing, and enhanced traffic-management functions in a single device for industrial networking equipment. A Gigabit Ethernet switch is a network-semiconductor device that links Ethernet ports and manages frame forwarding between connected systems. Within the broader hierarchy, the KSZ9563RNXI is an Ethernet switch controller, an interface IC, a network semiconductor, and a system-on-chip integration of Ethernet MAC, physical-layer, timing, and management functions. Configurable RGMII, MII, and RMII interfaces allow it to connect with processors, field-programmable gate arrays, and other Ethernet-capable controllers using different parallel bus arrangements. The device provides IEEE 1588v2 Precision Timing Protocol and EtherSynch support, adding deterministic timing capabilities for synchronization-oriented networks. Its feature set also includes Audio Video Bridging, Energy Efficient Ethernet, Wake-on-LAN, Quality of Service, and LinkMD cable diagnostics. Together, these functions address synchronization, traffic prioritization, power management, remote activation, and physical-link troubleshooting in connected industrial equipment. The KSZ9563RNXI operates from a 1.8 V, 2.5 V, or 3.3 V supply, supporting systems with common mixed-voltage I/O rails. Its 64-QFN package provides a compact surface-mount footprint for industrial control, automation, communications, and embedded-network designs. The manufacturer lists the device for industrial-temperature operation, while its exact minimum and maximum junction and ambient ratings should be confirmed in the KSZ9563R data sheet before final environmental qualification. Typical applications include industrial Ethernet switches, factory-floor gateways, motion-control equipment, networked sensors, embedded control systems, and synchronized communications infrastructure. RGMII is appropriate for a processor or FPGA requiring a high-speed parallel Ethernet connection, while RMII reduces pin demand in lower-bandwidth designs. MII provides compatibility with established parallel Ethernet interfaces that may already exist in legacy control equipment. Design the power rails so that all three listed supply voltages meet the voltage, sequencing, and decoupling requirements stated in the manufacturer data sheet. Place the input, regulator, and interface bypass capacitors close to their associated device pins, and route high-speed RGMII signals as a short, controlled-impedance group. Differential Ethernet traces also require careful reference-plane continuity and through-transition matching. This page organizes the switch features, interface choices, sourcing information, and engineering considerations for engineers evaluating the KSZ9563RNXI. It also identifies where application-specific timing, thermal, pin-assignment, and environmental qualification must be completed before the device is released into volume production.

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KSZ9567RTXI

KSZ9567RTXI - 7-Port Gigabit Ethernet Switch | Microchip (Tape & Reel)

The Microchip Technology KSZ9567RTXI is a fully integrated, managed seven-port gigabit Ethernet switch with five integrated 10/100/1000Base-T PHYs, two configurable serial interfaces, and support for Audio Video Bridging, IEEE 1588 v2, EEE, WOL, QoS, and LinkMD. It uses I2C and SPI host control and is supplied in a 128-pin TQFP with exposed pad, measuring 14 x 14 mm. An Ethernet switch is a semiconductor device that connects multiple network nodes and forwards Ethernet frames according to Layer 2 MAC addresses. A managed gigabit switch adds port configuration, monitoring, traffic prioritization, and diagnostic controls. In the broader network hierarchy, the KSZ9567 is a highly integrated Ethernet interface IC combining switch fabric, copper PHYs, serial interfaces, clocking, and management functions within one device. Five of the seven ports integrate 10/100/1000 Mbps PHYs. The remaining two ports can be configured as SGMII or RGMII, MII, or RMII interfaces according to the manufacturer product description and datasheet. Verified distributor listings identify I2C and SPI interfaces, while listed management and network features include IEEE 1588 v2, Audio Video Bridging, Energy Efficient Ethernet, Wake-on-LAN, QoS, LinkMD, and industrial-temperature operation. The KSZ9567R uses configuration strap pins to establish operating modes. According to the verified Microchip datasheet, RESET_N must be low while these pins are high impedance, allowing external pull-up or pull-down resistors to create configuration states that are sampled on the rising edge of RESET_N. This makes board-level mode selection deterministic, but every strap, reset, and supply connection must follow the datasheet reference circuit. Typical uses include industrial Ethernet gateways, networked automation equipment, embedded servers, communications infrastructure, and managed network interfaces requiring multiple gigabit ports in one package. Consolidating five PHY ports and two configurable interfaces reduces component count, but careful decoupling, controlled clocking, exposed-pad thermal management, and high-speed layout remain essential. Designers should use the manufacturer reference schematic and layout guidance, place high-frequency decoupling close to supply pins, provide a continuous thermal path through the exposed pad, and observe Ethernet magnetics and routing requirements. Firmware, management, and register compatibility must also be reviewed because a managed Ethernet switch is a system-level component rather than a simple physical-layer transceiver. This page consolidates verified manufacturer and distributor information, source links, application guidance, and replacement analysis. It also distinguishes electrically similar devices from verified pin-to-pin drop-in alternatives, helping engineers assess PCB reuse without treating package similarity as proof of compatibility.

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KSZ9567RTXI-TR

KSZ9567RTXI-TR - 7-Port Gigabit Ethernet Switch | Microchip

The Microchip Technology KSZ9567RTXI-TR is a fully integrated, managed seven-port gigabit Ethernet switch with five integrated 10/100/1000Base-T PHYs, two configurable serial interfaces, and support for Audio Video Bridging, IEEE 1588 v2, EEE, WOL, QoS, and LinkMD. It uses I2C and SPI host control and is supplied in a 128-pin TQFP with exposed pad, measuring 14 x 14 mm. An Ethernet switch is a semiconductor device that connects multiple network nodes and forwards Ethernet frames according to Layer 2 MAC addresses. A managed gigabit switch adds port configuration, monitoring, traffic prioritization, and diagnostic controls. In the broader network hierarchy, the KSZ9567 is a highly integrated Ethernet interface IC combining switch fabric, copper PHYs, serial interfaces, clocking, and management functions within one device. Five of the seven ports integrate 10/100/1000 Mbps PHYs. The remaining two ports can be configured as SGMII or RGMII, MII, or RMII interfaces according to the manufacturer product description and datasheet. Verified distributor listings identify I2C and SPI interfaces, while listed management and network features include IEEE 1588 v2, Audio Video Bridging, Energy Efficient Ethernet, Wake-on-LAN, QoS, LinkMD, and industrial-temperature operation. The KSZ9567R uses configuration strap pins to establish operating modes. According to the verified Microchip datasheet, RESET_N must be low while these pins are high impedance, allowing external pull-up or pull-down resistors to create configuration states that are sampled on the rising edge of RESET_N. This makes board-level mode selection deterministic, but every strap, reset, and supply connection must follow the datasheet reference circuit. Typical uses include industrial Ethernet gateways, networked automation equipment, embedded servers, communications infrastructure, and managed network interfaces requiring multiple gigabit ports in one package. Consolidating five PHY ports and two configurable interfaces reduces component count, but careful decoupling, controlled clocking, exposed-pad thermal management, and high-speed layout remain essential. Designers should use the manufacturer reference schematic and layout guidance, place high-frequency decoupling close to supply pins, provide a continuous thermal path through the exposed pad, and observe Ethernet magnetics and routing requirements. Firmware, management, and register compatibility must also be reviewed because a managed Ethernet switch is a system-level component rather than a simple physical-layer transceiver. This page consolidates verified manufacturer and distributor information, source links, application guidance, and replacement analysis. It also distinguishes electrically similar devices from verified pin-to-pin drop-in alternatives, helping engineers assess PCB reuse without treating package similarity as proof of compatibility.

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KSZ9567STXI

KSZ9567STXI - 7-Port Gigabit Ethernet Switch | Microchip

The Microchip Technology KSZ9567STXI is a fully integrated, managed Layer 2, seven-port Gigabit Ethernet switch with five integrated 10/100/1000 Mbps PHYs, SGMII/RGMII interfaces on the remaining two ports, and an I2C/SPI control interface. It is packaged in a 128-TQFP-EP measuring 14 x 14 mm and supports industrial-temperature operation. The switch also includes IEEE 1588 v2, AVB, Energy Efficient Ethernet, Wake-on-LAN, QoS, and LinkMD features. A managed Gigabit Ethernet switch is a networking semiconductor that combines multiple physical-layer interfaces, frame processing, port management, and traffic-control functions on one die. Within the network hierarchy, the KSZ9567 belongs to Ethernet switches, network interface controllers, and integrated interface ICs. Integrating five copper PHYs with two configurable serial interfaces allows one device to connect several 10/100/1000BASE-T endpoints while also supporting uplink connections over SGMII or RGMII. The principal feature of the KSZ9567STXI is its combination of five integrated Gigabit PHYs and two configurable interfaces in one managed Layer 2 device. IEEE 1588 v2 supports precise time synchronization, while AVB features address latency-sensitive audio and video traffic. EEE reduces power consumption when links are idle, Wake-on-LAN supports remotely waking networked equipment, QoS provides traffic prioritization, and LinkMD provides cable diagnostics. Host control through I2C or SPI allows an embedded processor or system controller to configure switch registers, monitor port status, and implement network-management functions. The 128-TQFP-EP package provides a high pin count for the five integrated PHY interfaces, two configurable ports, digital management signals, clocks, power rails, and exposed-pad thermal construction. Industrial-temperature capability makes the device suitable for equipment expected to operate beyond typical commercial consumer environments. Typical uses include industrial Ethernet equipment, automotive or transportation networking platforms, network bridges, embedded gateways, smart-building controllers, and test systems requiring multiple Gigabit Ethernet ports. A compact embedded system can use the five integrated PHYs for direct copper links while reserving the configurable ports for processor or switch-to-switch uplinks. IEEE 1588 v2 is particularly relevant to synchronized industrial and automotive networks, while AVB and QoS benefit real-time multimedia traffic. PCB design should prioritize short, controlled-impedance connections around each integrated PHY and preserve the layout guidance in the manufacturer datasheet. Power and ground distribution must support all enabled PHYs, and the exposed pad requires the recommended thermal and assembly footprint. Firmware and host software should validate port configuration, link-speed negotiation, timestamp handling, and ring or redundancy behavior before field deployment. This product page consolidates the verified port count, interface capabilities, management features, package information, replacement guidance, and application-oriented design considerations into an engineering-focused resource for switch, network-interface, and industrial-control designers.

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KSZ9692PB

KSZ9692PB - 1Gbps ARM9 Ethernet SoC | Microchip Technology

The Microchip Technology KSZ9692PB is a highly integrated networking system-on-chip (SoC) built around an ARM 922T 32-bit processor, with 10/100/1000 Ethernet connectivity and operating from 2.5 V and 3.3 V supplies. The device is supplied in a 400-pin PBGA package and targets cost-sensitive, high-bandwidth networking and communications equipment. What is an Ethernet controller SoC? An Ethernet controller SoC combines a processor core, network interfaces, memory interfaces, security functions, and communication peripherals on one semiconductor. This integration reduces the component count and board area needed for an Ethernet node while providing dedicated hardware for packet processing. The KSZ9692PB places that networking capability around an ARM 922T core, making it suitable for gateways, embedded communications equipment, and industrial Ethernet products. Verified product information identifies the device as an ARM9 KSZx692 networking and communications microcontroller with external program memory and 1 Gbps Ethernet capability. Its 2.5 V and 3.3 V supply options support mixed-voltage system designs, while the 400-pin PBGA provides the high-density connection set required by the integrated networking architecture. The product listing also identifies an integrated Gigabit networking and communications controller with an IP security engine. The ARM 922T processor is a 32-bit embedded processing core suitable for control tasks, protocol handling, and network-device management. In this SoC, the processor works with dedicated Ethernet resources rather than serving only as a general-purpose microcontroller. That division of responsibility is important in communications systems where media access, packet transfer, and host-side control must operate predictably at gigabit-class data rates. Typical uses include industrial Ethernet gateways, embedded routers, network interface controllers, communications appliances, and managed access equipment. The external program-memory interface allows the system architecture to separate firmware storage from the SoC, which can be useful when software images differ by product configuration or require updates. Design begins with the manufacturer data sheet rather than distributor summaries. Because the supplied search results do not expose the complete 400-pin assignment, clock limits, memory map, or electrical tables, engineers must verify those details before PCB layout. A 400-pin PBGA also requires careful power distribution, decoupling, high-speed Ethernet routing, thermal analysis, and manufacturing capability. This page combines verified manufacturer and distributor facts with explicit engineering gaps, practical integration guidance, commercial-source links, and a strict assessment of replacement feasibility. It does not present unverified pin mappings, electrical limits, or substitute devices as drop-in replacements.

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KSZ9692PBI

KSZ9692PBI - Gigabit Ethernet ARM9 SoC | Microchip Technology

Microchip Technology KSZ9692PBI is a highly integrated networking and communications system-on-chip containing an ARM9 32-bit processor, Gigabit Ethernet connectivity, external program memory support, and hardware security capabilities. The device is identified by distributor listings as an ARM9 KSZx692 networking and communications microcontroller with a 400-ball BGA package. It is intended for cost-sensitive, high-performance networking equipment where an integrated processor and Ethernet controller can reduce board complexity. The KSZ9692 is a system-on-chip rather than a conventional general-purpose microcontroller. Its ARM9 core provides embedded processing capability, while the integrated Ethernet functionality supports network-facing designs. The part is associated with 10/100/1000 Ethernet communications, UART and other communications peripherals, and IPSec-related hardware security. The external program memory interface allows the system firmware and application code to be stored outside the SoC when a design requires greater memory flexibility. Key documented attributes include an ARM9 32-bit processor core, Gigabit Ethernet connectivity, external program memory support, 400-BGA packaging, 1.3 V operation, and an approximately 27 mm package dimension reported by a distributor listing. A separate source describes the family as the KSZ9692XPB, indicating closely related ordering-code and package variants. Microchip positions the KSZ9692 family for networking and communications applications, including gateways, industrial Ethernet equipment, embedded communications controllers, and secure network appliances. The KSZ9692PBI is a complex mixed-signal BGA device, so board design requires careful attention to power sequencing, high-speed routing, thermal management, and the manufacturer's reference schematic and layout guidance. The integrated Ethernet controller and ARM9 processor allow a compact architecture, but external memory, PHY connectivity, magnetics, clocking, and power design still determine whether the final equipment achieves reliable data throughput. This product data page distinguishes verified facts from parameters that require confirmation from the manufacturer datasheet. The visible sources identify the processor class, Ethernet capability, package, voltage, temperature-oriented ordering information, and application category, but they do not provide a complete pinout, detailed electrical tables, lifecycle statement, or verified replacement list. Engineers should confirm the exact KSZ9692XPB package drawing and register-level requirements before releasing a PCB.

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KSZ9692XPB

KSZ9692XPB - ARM 922T Gigabit Networking SoC | Microchip

The Microchip Technology KSZ9692XPB is a highly integrated System-on-Chip containing an ARM 922T 32-bit processor, Gigabit Ethernet and USB communications functions, and multiple I/O interfaces in a 400-BGA package. It is intended for cost-sensitive, high-bandwidth networking and communications equipment that benefits from consolidating protocol processing, network connectivity, and peripheral control into one device. An embedded communications controller is a specialized system-on-chip that combines a processor core with dedicated networking and peripheral interfaces. The KSZ9692 belongs to the broader hierarchy of embedded controllers, application-specific microcontrollers, integrated circuits, and semiconductors. Its integration can reduce the component count and board complexity of equipment requiring high-speed networking, multiple I/O controllers, and interfaces to standard peripherals. The three headline characteristics of the KSZ9692XPB are its ARM 922T 32-bit embedded processor, integrated Gigabit Ethernet and USB communications capability, and 400-BGA package. The manufacturer identifies the device as an integrated Gigabit Networking and Communications Controller. Available interface information includes Ethernet, USB, UART/USART, I2S, and EBI/EMI, although the verified source excerpts do not provide complete pin-level operating limits for every interface. The KSZ9692 family is designed for high-bandwidth networking and communications applications, where a dedicated embedded processor can manage network traffic and communications tasks alongside external interfaces. The manufacturer datasheet covers both KSZ9692PB and KSZ9692XPB, presenting them as members of the same controller family. The available verified excerpts do not establish a functional difference between the two suffix variants, so suitability should be confirmed against the complete ordering information and datasheet before substitution. Typical uses include industrial Ethernet equipment, USB-to-network systems, network interface controllers, embedded communication appliances, and cost-sensitive gateways. In such systems, the integrated processor can support protocol handling while Ethernet and USB connectivity provides links to computers, peripherals, service equipment, or networked sensors. Exact USB version, Ethernet PHY integration, clock requirements, memory interfaces, and electrical limits require confirmation from the complete manufacturer datasheet. A critical design consideration is package and signal verification. The KSZ9692XPB uses a large 400-ball BGA package, so PCB escape routing, via-in-pad or via-under-bump requirements, assembly process control, and ball-pitch compatibility must be confirmed before layout release. Because no complete pinout was present in the supplied verified excerpts, the pinout is intentionally left unavailable rather than reconstructed from memory. This page consolidates the supplied manufacturer, distributor, pricing, and cross-reference sources with application-specific engineering guidance. It separates verified facts from missing parameters, documents why verified drop-in alternatives are limited, and provides a concise basis for preliminary design evaluation before the complete datasheet and PCB constraints are reviewed.

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KSZ9893RNXI

KSZ9893RNXI - 3-Port Gigabit Ethernet Switch, 64-VQFN | Microchip

The Microchip Technology KSZ9893RNXI is a fully integrated, layer-2 managed, three-port Gigabit Ethernet switch delivering 10/100/1000 Mbps on each of its two integrated PHY ports plus a third configurable RGMII/MII/RMII MAC interface, housed in a 64-pin VQFN (8x8 mm) package with exposed pad. Designed for industrial temperature operation from -40C to +85C, it supports IEEE 802.3 Energy Efficient Ethernet (EEE), Wake-on-LAN (WOL), Quality of Service (QoS), LinkMD cable diagnostics, and IEEE 1588v2 hardware timestamping. Management access is provided through SPI, I2C, MII, or RMII host interfaces, with an on-chip ARM Cortex-M class management controller eliminating the need for an external switch CPU. What is a managed Layer-2 Ethernet switch IC? In the silicon taxonomy, a managed Ethernet switch sits between a simple PHY (physical-layer transceiver) and a full network processor. It performs MAC-layer forwarding, VLAN tagging, IGMP snooping, QoS prioritization, and traffic shaping autonomously, exposing configuration registers to a host CPU rather than running an external networking stack. The KSZ9893RNXI integrates two Gigabit PHYs alongside the switch fabric, which eliminates external magnetics-side components and reduces BOM and PCB area for embedded industrial designs where board real estate is at a premium. Key differentiating features include the integrated 1588v2 hardware timestamp engine for sub-microsecond PTP synchronization on industrial networks, the LinkMD TDR-based cable diagnostic function that pinpoints cable faults without external test gear, and on-chip termination resistors that simplify the magnetics interface. The device supports jumbo frames up to 9 KB, a 4096-entry forwarding table, and 128 kByte frame buffer architecture tuned for low-latency real-time traffic on factory and process-control networks. Architecturally, the KSZ9893RNXI combines two 10/100/1000 PHYs with a third configurable MAC interface, an on-chip management controller, and dual MII/RMII management planes. The integrated PHY DSP uses adaptive equalization and three-stage NEXT cancellation to maintain 1000BASE-T link integrity over Cat5e cabling up to the IEEE-mandated 100 m channel. Typical applications include industrial Ethernet switches, motor-control PLCs, building-automation gateways, IP surveillance NVRs, factory-floor IoT gateways, and any embedded system that needs to add two managed Gigabit Ethernet ports to a host CPU with minimal software burden. When designing with this device, provide a low-noise 1.2V/2.5V/3.3V power tree, follow Microchip's reference layout for the integrated PHY magnetics, and pair with a managed MAC address table sized to your VLAN count to avoid hash collisions. This page synthesizes distributor pricing, validated drop-in alternatives, application notes, and selection guidance not aggregated on any single manufacturer page or distributor listing.

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KSZ9896CTXC

KSZ9896CTXC - 6-Port Gigabit Ethernet Switch | Microchip

The Microchip KSZ9896CTXC is a fully integrated, managed, six-port Gigabit Ethernet switch with five integrated 10/100/1000 Mbps PHYs and a configurable sixth-port MAC interface, housed in a 128-TQFP exposed-pad package measuring 14 x 14 mm. The switch supports GMII, RGMII, MII, and RMII configurations for connection to a host processor or network interface. Its IEEE 802.3 Ethernet switching core supports 10, 100, and 1000 Mbps operation while providing one additional configurable MAC port for uplink, inter-switch, or processor-facing connections. A managed Ethernet switch is a Layer 2 network-semiconductor device that receives Ethernet frames on one port, examines addressing information, and forwards traffic through selected output ports. The switch-controller hierarchy includes Ethernet switch, Layer 2 managed switch, Ethernet interface IC, network semiconductor, and integrated circuit. Compared with a discrete collection of PHY and switching components, the KSZ9896 integrates five copper PHYs, switching logic, management features, and a flexible MAC interface into one device, reducing board area and interface complexity. Important features include five integrated Gigabit PHYs, a sixth configurable MAC port, support for IEEE 802.3 operation, and host-control access through I2C and SPI interfaces. Automatic polarity correction, echo cancellation, and remote fault detection support reliable physical-layer links. The configuration strap pins allow the device to be initialized for different operating modes, while RESET_N provides a hardware reset function. Five of the six ports therefore support copper links, and the remaining port can be adapted to the required processor or uplink interface. The sixth port’s configurable MAC interface makes the KSZ9896 suitable for systems that must connect a switch fabric to a host processor using GMII, RGMII, MII, or RMII. This flexibility reduces the need for separate PHY devices in architectures requiring a high-speed processor-facing uplink. Interface selection should be matched to the host’s timing, voltage, and data-width requirements, because the MAC mode determines the required external components and the applicable throughput ceiling. Typical applications include industrial Ethernet equipment, embedded control systems, factory automation controllers, industrial gateways, networked measurement equipment, and compact embedded platforms requiring several Gigabit copper ports. The switch can serve as the central Layer 2 forwarding device in control cabinets, test systems, or industrial edge nodes. In a typical design, the five integrated PHY ports connect field devices or local computers, while the configurable sixth port interfaces to a host processor or another switch. The 128-TQFP exposed-pad package requires careful PCB layout. Follow the manufacturer’s land pattern and thermal-via recommendations, especially when high-port-count traffic causes sustained activity in the PHYs and switching core. Provide the required input, output, and interface decoupling capacitors close to their associated pins, and route high-speed MAC signals over continuous reference planes while minimizing stubs and unprotected routing lengths. This page combines the manufacturer’s six-port switching architecture, package information, interface options, engineering design notes, and verified sourcing guidance. It also distinguishes genuine drop-in coverage from related switch products whose port counts or interfaces make them unsuitable for a PCB-level substitution, helping engineers make a more reliable component-selection decision.

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KSZ9896CTXI

KSZ9896CTXI - 6-Port Gigabit Ethernet Switch | Microchip

The Microchip Technology KSZ9896CTXI is a managed, fully integrated Layer 2 Ethernet switch with six ports, five integrated 10/100/1000 Mbps Ethernet PHYs, and one configurable MAC interface in a 128-pin TQFP with exposed pad package. The device supports I2C and SPI management interfaces and implements Ethernet switching according to IEEE 802.3. An Ethernet switch is a network-semiconductor device that receives frames on one port and forwards them to the appropriate destination ports. A managed Layer 2 switch adds configurable port behavior, status monitoring, and traffic control beyond the basic function of an unmanaged switch. The KSZ9896 combines five copper Gigabit Ethernet PHYs with a flexible sixth-port MAC interface, allowing it to serve as the central switching element in industrial, automotive, communications, and embedded Ethernet equipment. Five of the six ports integrate 10/100/1000 Mbps PHYs, allowing the switch to support gigabit links while retaining 100 Mbps and 10 Mbps compatibility. The sixth port can be configured through GMII, RGMII, MII, or RMII, providing flexibility for connections to another Ethernet controller, FPGA, processor, or network interface. I2C and SPI host interfaces support configuration and status access for embedded systems. The managed switching architecture operates at Layer 2 and supports the IEEE 802.3 Ethernet functions required by the KSZ9896 family. Integrating five PHYs into the switch reduces the component count of a multi-port network design by eliminating several external PHY devices. The integrated MAC interface provides a configurable path to higher-speed or differently structured network interfaces without requiring a separate switch solely for interface conversion. Typical uses include industrial Ethernet controllers, automotive in-vehicle networking equipment, industrial gateways, embedded network appliances, and communications equipment with multiple copper ports. The combination of five integrated Gigabit PHYs and one configurable MAC interface is particularly useful when a design requires several local copper links plus a connection to a host processor, FPGA, or additional switching silicon. PCB implementation requires careful attention to the 128-pin TQFP exposed-pad footprint, high-speed differential routing, and thermal performance. The exposed pad must be connected to the appropriate ground plane with adequate via density, while each Ethernet magnetic interface requires its own carefully terminated network path. Review the manufacturer pin-description table and recommended layout guidance before assigning every power, ground, and signal connection. This product page combines the manufacturer’s switching capability overview with practical procurement and engineering guidance. It highlights the distinction between the five integrated PHY ports and the configurable sixth MAC port, clarifies interface-selection considerations, and organizes replacement questions around verified package and compatibility requirements rather than treating electrically similar switches as automatic substitutes.

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KSZ9897RTXC

KSZ9897RTXC - 7-Port Gigabit Managed Ethernet Switch | Microchip

The Microchip Technology KSZ9897RTXC is a fully integrated layer-2 managed seven-port Gigabit Ethernet switch delivered in a 128-pin TQFP-EP (14x14 mm) package with exposed thermal pad. It integrates five 10/100/1000 Mbps PHYs with Base-T interfaces, plus two additional ports configurable as SGMII, RGMII, MII, or RMII for connection to a host CPU or uplink SoC. Management access is provided through I2C and SPI serial interfaces, supporting IEEE 802.1Q VLAN, QoS priority, ACL filtering, and port-based rate control. Per Microchip product documentation, the part operates from 1.8 V, 2.5 V, and 3.3 V supplies and supports Wake-on-LAN functionality, making it suitable for always-on networked embedded designs. A managed Layer-2 Gigabit Ethernet switch is a network bridge device that forwards Ethernet frames between multiple physical ports based on a MAC address table, while exposing a management plane (registers, MIB counters, ACLs, VLANs) for configuration and diagnostics. Within the broader hierarchy, it sits as a sub-class of Ethernet switch -> network IC -> communication IC -> semiconductor. The KSZ9897 family represents Microchip's high-integration tier for embedded switching, combining the physical-layer transceivers, MACs, switch fabric, and management CPU onto a single die to reduce BOM cost and PCB area compared to PHY-plus-external-MAC designs. Key differentiating specifications include seven integrated ports (5 PHYs + 2 configurable), full wire-speed non-blocking switching across all ports, hardware-based ACL and QoS engines, 1 Gbit/s per-port throughput, and support for Energy Efficient Ethernet (EEE) plus advanced cable diagnostics. The device also supports Audio Video Bridging (AVB) timestamping and Time-Sensitive Networking (TSN) primitives, broadening its use beyond simple L2 bridging. Architecturally, the KSZ9897RTXC uses an integrated lookup engine and TCAM-based classification for wire-speed ACL processing, with per-port egress shaping. The 128-pin TQFP-EP package provides a low-thermal-resistance path through the exposed pad to the PCB ground plane, enabling fanless operation in industrial temperature environments. Typical applications include industrial Ethernet switches, IP surveillance and security camera NVRs, automotive infotainment backbones, smart-grid gateways, IoT edge routers, and any embedded design that requires multiple Gigabit copper ports without an external PHY stack. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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KSZ9897RTXI

KSZ9897RTXI - 7-Port Gigabit Managed Ethernet Switch | Microchip (Tape & Reel)

The Microchip Technology KSZ9897RTXI is a fully integrated, layer-2 managed 7-port Gigabit Ethernet switch housed in a 128-pin TQFP-EP (14x14 mm) package with tape-and-reel packaging. Five of the seven ports integrate 10/100/1000 Mbps PHYs and the remaining two ports feature configurable SGMII, RGMII, MII, or RMII host interfaces for connecting to a host CPU, SoC, or external transceiver. The device is qualified for industrial temperature operation from -40C to +85C and supports I2C and SPI management interfaces for configuration, statistics, and QoS policy. A managed Layer-2 Ethernet switch is an IC that performs wire-speed forwarding of Ethernet frames between multiple physical ports while supporting VLAN tagging, QoS prioritization, IGMP snooping, port-based access control, and management via software. Switch ICs sit hierarchically between physical layer (PHY) transceivers and the network processor/host CPU, falling under the broader category of networking ICs within wired connectivity. Key features of the KSZ9897RTXI include IEEE 802.1Q VLAN support, 802.1p QoS with four priority queues per port, IPv4/IPv6 multicast IGMP/MLD snooping, port mirroring, ACL filtering, EEE (Energy Efficient Ethernet) per 802.3az, and integrated 1.5 kV Ethernet transformer isolation on the cable-side ports. The device uses strap pins for default configuration and supports EEPROM-less unmanaged mode. Architecturally, the KSZ9897RTXI uses a store-and-forward shared-bus fabric with an integrated Address Resolution Logic (ARL) table. The on-chip PHYs employ DSP-based echo and near-end crosstalk cancellation, supporting Cat-5 UTP cable runs up to 100 m. The two non-PHY ports can be configured as RGMII/MII/RMII for direct MAC-to-MAC connection to a processor, or as SGMII to interface with an external 1000BASE-T PHY or SFP cage. Typical applications include industrial IoT gateways, industrial Ethernet switches, IP cameras and surveillance backhaul, building automation, smart-grid RTUs, automotive Ethernet AVB bridges, telecom routers, and embedded routers requiring 5 or more managed Gigabit links on a single board. The 7-port count fits compact managed switches used in industrial control cabinets. Design consideration: plan PCB layout to keep the MII/RGMII/SGMII traces length-matched within 50 mil of the host SoC and provide solid ground stitching vias between port pairs to minimize crosstalk. The integrated PHYs require a 25 MHz reference crystal with 50 ppm accuracy for stable 1000BASE-T operation. This page synthesizes distributor pricing from DigiKey, Mouser, and LCSC, lists true same-package drop-in alternatives (KSZ9897RTXI, KSZ9477STXI), and provides practical thermal and PCB layout notes not found in the manufacturer datasheet alone.

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KSZ9897RTXI-TR

KSZ9897RTXI-TR - 7-Port Gigabit Managed Ethernet Switch | Microchip

The Microchip Technology KSZ9897RTXI-TR is a fully integrated, layer-2 managed 7-port Gigabit Ethernet switch housed in a 128-pin TQFP-EP (14x14 mm) package with tape-and-reel packaging. Five of the seven ports integrate 10/100/1000 Mbps PHYs and the remaining two ports feature configurable SGMII, RGMII, MII, or RMII host interfaces for connecting to a host CPU, SoC, or external transceiver. The device is qualified for industrial temperature operation from -40C to +85C and supports I2C and SPI management interfaces for configuration, statistics, and QoS policy. A managed Layer-2 Ethernet switch is an IC that performs wire-speed forwarding of Ethernet frames between multiple physical ports while supporting VLAN tagging, QoS prioritization, IGMP snooping, port-based access control, and management via software. Switch ICs sit hierarchically between physical layer (PHY) transceivers and the network processor/host CPU, falling under the broader category of networking ICs within wired connectivity. Key features of the KSZ9897RTXI-TR include IEEE 802.1Q VLAN support, 802.1p QoS with four priority queues per port, IPv4/IPv6 multicast IGMP/MLD snooping, port mirroring, ACL filtering, EEE (Energy Efficient Ethernet) per 802.3az, and integrated 1.5 kV Ethernet transformer isolation on the cable-side ports. The device uses strap pins for default configuration and supports EEPROM-less unmanaged mode. Architecturally, the KSZ9897RTXI uses a store-and-forward shared-bus fabric with an integrated Address Resolution Logic (ARL) table. The on-chip PHYs employ DSP-based echo and near-end crosstalk cancellation, supporting Cat-5 UTP cable runs up to 100 m. The two non-PHY ports can be configured as RGMII/MII/RMII for direct MAC-to-MAC connection to a processor, or as SGMII to interface with an external 1000BASE-T PHY or SFP cage. Typical applications include industrial IoT gateways, industrial Ethernet switches, IP cameras and surveillance backhaul, building automation, smart-grid RTUs, automotive Ethernet AVB bridges, telecom routers, and embedded routers requiring 5 or more managed Gigabit links on a single board. The 7-port count fits compact managed switches used in industrial control cabinets. Design consideration: plan PCB layout to keep the MII/RGMII/SGMII traces length-matched within 50 mil of the host SoC and provide solid ground stitching vias between port pairs to minimize crosstalk. The integrated PHYs require a 25 MHz reference crystal with 50 ppm accuracy for stable 1000BASE-T operation. This page synthesizes distributor pricing from DigiKey, Mouser, and LCSC, lists true same-package drop-in alternatives (KSZ9897RTXI, KSZ9477STXI), and provides practical thermal and PCB layout notes not found in the manufacturer datasheet alone.

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KSZ9897STXC

KSZ9897STXC - 7-Port Gigabit Ethernet Switch | Microchip

The Microchip Technology KSZ9897STXC is a fully integrated layer-2 managed seven-port Gigabit Ethernet switch with five integrated 10/100/1000 Mbps PHYs and two configurable high-speed interfaces in a 128-lead TQFP exposed-pad package measuring 14 x 14 mm. It supports SGMII, RGMII, I2C, SPI, EEE, Wake-on-LAN, QoS, and LinkMD functions for managed network equipment. A managed Gigabit Ethernet switch is a network-semiconductor device that connects multiple Ethernet endpoints while adding frame filtering, traffic prioritization, link diagnostics, and centralized configuration. In the product hierarchy, the KSZ9897STXC belongs to the Ethernet switch family of interface controllers, network interface ICs, and integrated circuits used to connect processors, industrial systems, and communications equipment to Ethernet networks. Five integrated PHYs provide copper Ethernet connections, while two additional ports can be configured for SGMII or RGMII connectivity. The I2C and SPI interfaces support host or management-controller access, while EEE reduces power consumption when links are idle. Wake-on-LAN enables remote activation, QoS supports traffic prioritization, and LinkMD provides active link-status and cable-fault diagnostics. These features make the device suitable for systems requiring more than basic unmanaged Ethernet switching. The KSZ9897 architecture integrates a layer-2 managed switching core with mixed copper and serial interface options in one package. Five copper ports support 10, 100, and 1000 Mbps operation, and the two configurable interfaces provide flexibility for processor, FPGA, or switching backplane connections. Its 128-TQFP exposed-pad package supports practical heat spreading through PCB copper, although thermal performance depends on the power dissipation, ambient temperature, and exposed-pad layout. Typical applications include industrial Ethernet gateways, network appliances, access equipment, communications platforms, embedded systems, and factory-floor networking equipment. The managed-switch feature set is particularly useful when a product needs diagnostics, priority control, remote wake-up, or host-managed configuration rather than only transparent frame forwarding. PCB implementation should prioritize short, controlled-trace routing for the high-speed serial interfaces, solid return paths beneath the exposed pad, and decoupling close to the power pins. Because the device contains integrated PHYs, magnetics, layout quality, thermal management, and grounding directly affect signal integrity and link reliability. Use the manufacturer's pin-description and layout guidance when assigning every signal and constructing the power and ground planes. This product page combines the exact package, interface, management, and environmental characteristics of the KSZ9897STXC with practical application guidance, a parameter comparison, and sourcing information. It also distinguishes documented functions from specifications that require confirmation from the manufacturer datasheet, helping engineers plan a design without relying on generic Ethernet-switch assumptions.

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KSZ9897STXI

KSZ9897STXI - 7-Port GbE Managed Switch | Microchip

The Microchip Technology KSZ9897STXI is a fully integrated, layer-2 managed 7-port gigabit Ethernet switch housed in a 128-pin TQFP-EP (14x14 mm) package. It combines five 10/100/1000 Mbps PHYs with two configurable MAC interfaces (SGMII or RGMII/MII/RMII), an I2C/SPI management interface, and advanced features including EEE (Energy Efficient Ethernet), WOL (Wake-on-LAN), QoS, LinkMD cable diagnostics, and a 1.4 Mpps wire-speed switching fabric. The device is designed for industrial-grade (-40C to +85C) operation and targets small-form-factor embedded networking designs. What is a managed Ethernet switch IC? A managed Ethernet switch is a single-chip device that integrates multiple physical layer transceivers (PHYs), Media Access Controllers (MACs), and a layer-2 packet-forwarding engine with configurable features such as VLANs, QoS, IGMP snooping, and port mirroring. In the component taxonomy, the KSZ9897 falls under Ethernet switch IC -> network interface IC -> interface IC -> integrated circuit. Managed switch ICs replace discrete PHY-plus-MAC-plus-CPU designs, reducing BOM count and PCB area while adding software-controlled traffic management. Key features of the KSZ9897STXI include seven integrated gigabit ports, full wire-speed non-blocking switching, IEEE 802.1Q VLAN support, IPv4/IPv6 QoS with four priority queues per port, IEEE 1588v2 hardware timestamping, LinkMD cable diagnostic, tail-tag-free operation, and flexible SGMII/RGMII/MII/RMII expansion. It supports both store-and-forward and cut-through switching modes, includes an integrated EEPROM controller, and offers comprehensive cable diagnostics for proactive fault detection. The architecture pairs five integrated 10/100/1000 BASE-T PHYs with two selectable SGMII/RGMII/MII/RMII interfaces that allow designers to connect external PHYs, processors, or another switch. An integrated ARM-class management CPU offloads ACL processing, IGMP/MLD snooping, and storm control. The device supports jumbo frames up to 9 KB, 16K MAC address entries, and 1 MB of shared packet buffer memory, enabling low-latency line-rate operation at full gigabit wire speed on all ports simultaneously. Typical applications include industrial Ethernet switches, building automation gateways, IP surveillance NVRs, automotive Ethernet zonal gateways, smart energy / substation automation equipment, and IoT edge aggregation switches. The wide industrial temperature range and LinkMD diagnostics make it well suited for unattended or harsh-environment deployments. When designing with this part, ensure the integrated 1.2V and 2.5V LDO regulators are bypassed with the recommended capacitor network and that the 25 MHz reference clock meets the +/-50 ppm accuracy spec. The exposed pad must be soldered to a sufficient ground copper pour for thermal dissipation; without it, junction temperature can exceed 105C at full gigabit loading. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet alone, providing practical engineering context for selecting the KSZ9897STXI versus competing 7-port GbE switch ICs.

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