KSZ8873MML - 3-Port 10/100 Ethernet Switch | Microchip
부품 번호: KSZ8873MML ✓ 활성KSZ8873MML 개요
An Ethernet switch IC is a semiconductor that connects multiple network nodes, forwards Ethernet frames according to learned MAC addresses, and provides a shared physical network interface. In the product hierarchy, the KSZ8873MML is a managed Ethernet switch with PHY, which belongs to the broader Ethernet interface IC and network-interface semiconductor categories.
The verified product information identifies three 10/100 Mbps switch ports, integrated Ethernet PHYs, and configuration through I2C or SPI. Two MII interfaces allow the switching fabric to connect with an external network processor or FPGA. Low power consumption and advanced power management suit cost-sensitive embedded systems, while sophisticated QoS features include IPv6 priority classification.
The KSZ8873 family is designed for low-port-count 10/100 Mbps systems where a separate switching chip and multiple physical-layer devices would increase board area, component count, and power consumption. Its 64-LQFP package integrates the network-facing functions, but the two MII paths provide additional integration flexibility for designs requiring host connectivity.
Typical applications include industrial Ethernet gateways, embedded network controllers, factory equipment, security systems, and compact communication appliances. A design can connect two copper Ethernet PHYs through the switch while using an MII connection to a host processor. The integrated PHYs reduce external component requirements, and the managed interface allows firmware to configure ports and traffic behavior.
Designers should verify the complete MML pinout, clock requirements, magnetics implementation, and power-supply sequencing against the manufacturer datasheet before layout. The MML bonding configuration is specifically not interchangeable with the RLL or FLL variants, so PCB substitution without a manufacturer-supported pinout comparison is not safe.
This product record combines verified manufacturer and distributor information with structured application guidance, engineering caveats, and compatibility analysis. It highlights the practical distinction between functional alternatives and true pin-compatible drop-in replacements rather than treating similarly named KSZ8873 variants as interchangeable.
드롭인 대체품: KSZ8873MML — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: KSZ8873MML (동일 폼 팩터 및 풋프린트) — 차이점: Package, Product Type, Ethernet Data Rate, Host Interface, Integrated PHY.
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청KSZ8873MML 최대 정격 & 전기적 특성
| Product Type | Integrated managed Ethernet switch with PHY |
| Number of Switch Ports | 3 ports |
| Ethernet Data Rate | 10/100 Mbps |
| MII Interface Count | 2 |
| Management Interface | I2C and SPI |
| 패키지 | 64-pin LQFP |
| Package Dimensions | 10 x 10 mm |
| 실장 유형 | Surface mount |
| Power Consumption | Low-power design |
| Power Management | Advanced power-management features |
| QoS Features | Sophisticated QoS with IPv6 priority classification |
| Target Network Size | Low-port-count 10/100 Mbps systems |
KSZ8873MML 10 x 10 mm 핀 구성 가이드
KSZ8873MML(10 x 10 mm 패키지)의 핀 구성입니다. 핀 번호, 기능, 연결 다이어그램은 제조사 데이터시트에 정의되어 있습니다. 정확한 풋프린트와 솔더링 지침은 해당 문서를 참조하십시오.
다음에 대한 상세 핀아웃 데이터 없음: KSZ8873MML.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
KSZ8873MML 적합 용도: 6 애플리케이션s: Industrial Ethernet Gateway, Embedded Network Controller, Factory Equipment Connectivity, Network Security Appliance, IoT Edge Gateway, Communication Appliance.
Industrial Ethernet Gateway
The KSZ8873MML fits an industrial gateway that must combine several 10/100 Mbps devices behind a compact network interface. Its three integrated switch ports reduce the need for separate Ethernet PHY components, while the two MII interfaces can connect switching capacity to a host processor when more control is required. I2C or SPI management supports firmware-based configuration, and the 64-LQFP package fits a space-constrained board. Before layout, verify the MML-specific pinout, operating-temperature limits, reference-clock source, and external magnetics requirements in the manufacturer datasheet.
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Embedded Network Controller
The KSZ8873MML is appropriate for an embedded controller that needs to expose multiple wired-network connections without implementing a complete Ethernet switching subsystem on an FPGA. Two MII interfaces provide parallel links to host logic, while the switch fabric and integrated PHYs support 10/100 Mbps ports. Firmware can use I2C or SPI for configuration, which is useful when the host already manages one of those buses. Designers should confirm clocking, strap settings, reset behavior, and MII timing from the datasheet before committing the 64-LQFP layout.
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Factory Equipment Connectivity
The KSZ8873MML can support compact factory equipment that connects sensors, service interfaces, and controllers over Fast Ethernet. Three 10/100 Mbps ports provide a manageable low-port-count topology, while integrated PHYs can reduce board complexity compared with a discrete switch design. The I2C and SPI management options allow configuration from an embedded controller, and the advanced power-management focus supports power-conscious equipment. The exact industrial temperature grade, isolation requirements, and environmental limits must be confirmed for the selected ordering code before deployment.
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Network Security Appliance
The KSZ8873MML is useful in a compact security appliance that needs several 10/100 Mbps Ethernet endpoints and a manageable switch fabric. The three integrated switch ports can connect internal modules or downstream devices, while two MII interfaces provide flexible host attachment for traffic processing. I2C or SPI configuration simplifies integration with a system controller, and low-power operation is beneficial in continuously powered equipment. Because the MML pinout is not interchangeable with every related KSZ8873 bonding option, engineers should preserve the verified footprint and check the complete reference schematic and pin table.
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IoT Edge Gateway
The KSZ8873MML can serve as the wired-network hub in an IoT edge gateway where several local devices communicate over 10/100 Mbps Ethernet. Its three switch ports and integrated PHYs reduce external network-interface component count, while low power consumption and advanced power management are valuable in space- and energy-constrained installations. The dual I2C/SPI control options provide flexibility with different host processors. Firmware may use the managed features for port configuration and traffic prioritization, including IPv6 priority classification, subject to the detailed register and QoS procedures in the manufacturer documentation.
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Communication Appliance
The KSZ8873MML fits communication appliances that need a small, managed Ethernet switching subsystem rather than a larger multi-gigabit switch. Three 10/100 Mbps ports can link service nodes, while two MII interfaces allow an external processor to participate in traffic handling. The integrated-PHY architecture can simplify a two-copper-port design and support power-efficient operation. I2C or SPI host management allows board software to initialize and supervise the switch. Layout engineers should follow the manufacturer’s reference circuit for power, clocking, magnetics, and trace routing and must use the MML-specific pin assignment.
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추천 제품 요약
엔지니어링 참조 데이터: KSZ8873MML — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 |
|---|---|
| Product Type | Integrated 3-port managed Ethernet switch with PHY |
| Number of Ports | 3 |
| Ethernet Data Rate | 10/100 Mbps |
| MII Interfaces | 2 |
| Management Interface | I2C and SPI |
| Package | 64-pin LQFP (10 x 10 mm) |
| Brand | Microchip Technology |
| Power Features | Low power consumption and advanced power management |
| QoS Support | Sophisticated QoS with IPv6 priority classification |
주요 차별점
- Three integrated Fast Ethernet switch ports in one device (vs KSZ8873RLL)
- Two MII interfaces for host integration (vs KSZ8873RLL)
- Dual host-management paths (vs KSZ8873RLL)
설계 노트
Use the MML-specific datasheet and reference schematic rather than a generic KSZ8873 pinout. Microchip states that the MML, RLL, and FLL options use different internal bonding and have different pinouts, so reusing an existing board may require a full schematic and layout review. Preserve the 64-LQFP footprint only after checking every ball or lead assignment, including power, ground, clocks, management signals, MII interfaces, and PHY connections.
Follow the manufacturer’s recommended power-supply and decoupling arrangement because the supplied excerpts verify low-power operation and advanced power management but do not specify capacitor values, voltage tolerances, or sequencing requirements. Place bypass capacitors directly at the appropriate supply pins, provide the required clock source, and confirm operating voltage before selecting capacitors. These details must be taken from the MML datasheet and reference design rather than inferred from another family member.
Plan the Ethernet layout according to the manufacturer’s reference design, especially the MII traces, clock routing, PHY connections, and copper interfaces. MII signals are source-synchronous and can be sensitive to trace-length mismatch and crosstalk, while Ethernet magnetics and transmission-line geometry require controlled impedance. Keep switching-node or high-current paths away from sensitive clock and data nets, and use the manufacturer’s recommended grounding and via patterns.
Do not treat a distributor-listed functional equivalent as a drop-in substitute. The supplied cross-reference material explicitly identifies related KSZ8873 bonding options as non-interchangeable, and another result identifies register-map, MDIO, and control-signal differences for a legacy functional successor. A valid substitution requires identical package geometry, pin-by-pin function, power rails, clocking, management protocol, register behavior, and application support—not merely a shared Ethernet function.
규정 준수 정보
No specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements were included in the supplied verified excerpts. These fields remain unknown rather than being inferred from the manufacturer or package family.
