KSZ9896CTXC - 6-Port Gigabit Ethernet Switch | Microchip
N.º da peça: KSZ9896CTXC ✓ AtivoKSZ9896CTXC Visão geral
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.
Alternativas drop-in para KSZ9896CTXC — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasKSZ9896CTXC Classificações máximas e características elétricas
| Product Type | Managed Layer 2 Gigabit Ethernet switch |
| Total Port Count | 6 ports |
| Integrated Gigabit PHY Ports | 5 ports |
| Integrated PHY Data Rates | 10/100/1000 Mbps per PHY |
| Configurable MAC Port | 1 port |
| Supported MAC Interfaces | GMII, RGMII, MII, and RMII |
| Ethernet Standard | IEEE 802.3 |
| Management Interface | I2C and SPI |
| Encapsulamento | 128-TQFP-EP, 14 x 14 mm |
| Tipo de montagem | Surface mount |
| Configuration Method | Configuration strap pins |
| Reset Function | RESET_N |
| Automatic Polarity Correction | Supported |
| Echo Cancellation | Supported |
| Remote Fault Detection | Supported |
| Exposed Thermal Pad | Present |
| Status RoHS | Unknown (compliance status) |
| REACH Status | Unknown (compliance status) |
| AEC-Q100 Qualification | Not applicable (Ethernet switch) |
Guia de Configuração de Pinos do KSZ9896CTXC 128-tqfp-ep, 14 x 14 mm
Configuração de pinos para KSZ9896CTXC (pacote 128-tqfp-ep, 14 x 14 mm). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para KSZ9896CTXC.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
KSZ9896CTXC é adequado para 6 aplicaçãos: Industrial Ethernet Gateway, Factory Automation Controller, Embedded Network Appliance, Networked Measurement Instrument, Industrial Edge Node, Secure Network Appliance.
Industrial Ethernet Gateway
The KSZ9896CTXC fits an industrial gateway that must combine several local Ethernet devices with a higher-level processor connection. Five integrated 10/100/1000 Mbps PHYs can serve cameras, sensors, panel computers, or service equipment, while the sixth configurable MAC port can use RGMII, GMII, MII, or RMII for the host uplink. According to the Microchip KSZ9896 product page, managed Layer 2 forwarding is combined with I2C and SPI control. This arrangement reduces the number of discrete Ethernet components and centralizes port configuration. Industrial qualification still requires checking the operating-temperature limits, EMC requirements, and system isolation strategy before deployment.
Recomendado
Factory Automation Controller
The KSZ9896CTXC can serve as the central Layer 2 switch in a factory automation controller with machine, vision, and operator-network connections. Its five integrated Gigabit PHYs support 10, 100, and 1000 Mb/s links through the manufacturer-defined copper interfaces, and automatic polarity correction, echo cancellation, and remote fault detection improve physical-layer operation. The configurable sixth MAC port provides a path to the controller processor or an upstream switch. Because these networks may include motor drives and long field cables, the complete design must separately address surge protection, grounding, isolation, and industrial environmental requirements.
Recomendado
Embedded Network Appliance
The KSZ9896CTXC is well suited to compact embedded appliances that need five wired Ethernet endpoints and one host-facing port. The five integrated PHYs avoid a design dominated by separate Ethernet transceiver components, while GMII, RGMII, MII, and RMII options permit the sixth port to match different processor interfaces. According to the Microchip product page, the device is a managed Layer 2 switch with I2C and SPI management. In a space-constrained product, follow the 14 x 14 mm TQFP exposed-pad land pattern closely and provide adequate copper and thermal vias to maintain performance under sustained multi-port traffic.
Recomendado
Networked Measurement Instrument
The KSZ9896CTXC can consolidate connections in a networked measurement instrument where several test modules, computers, and service interfaces require Gigabit Ethernet. Five integrated PHYs provide 10/100/1000 Mb/s copper ports, while the configurable sixth MAC port can connect to an instrument controller. The managed-switch architecture supports organized Layer 2 traffic segmentation and centralized I2C or SPI configuration. For laboratory or production-test equipment, use short, controlled cable runs and design the external magnetics and line protection according to the manufacturer’s interface guidance. Verify jitter, packet-loss, and timing requirements against the complete system rather than relying on nominal link rates alone.
Recomendado
Industrial Edge Node
The KSZ9896CTXC supports an industrial edge node that bridges several local machines to a cloud or supervisory network. Five integrated Gigabit PHYs can connect sensors, vision systems, and service laptops, while the sixth MAC port can provide a dedicated uplink through the supported GMII, RGMII, MII, or RMII modes. Management through I2C and SPI allows a host processor to configure port behavior and monitor links. The architecture is especially useful when preserving five copper ports is more important than adding another integrated PHY. A production design should check temperature, EMC, surge, and grounding requirements, as network-port magnetics alone do not provide surge immunity.
Recomendado
Secure Network Appliance
The KSZ9896CTXC can provide the Layer 2 port fan-out in a secure gateway, firewall appliance, or network-monitoring platform. Its managed six-port architecture allows five local endpoints to operate alongside one configurable host-facing interface, and the integrated PHYs reduce board-level component count. I2C and SPI management support software-controlled configuration, while the choice of GMII, RGMII, MII, or RMII allows the same switch platform to serve different host processors. Security-focused systems should validate traffic isolation, management-access controls, and firmware update processes at the system level. The Ethernet switch itself does not replace host firewall policy or authenticated management controls.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para KSZ9896CTXC — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Brand | Microchip Technology |
| Package | 128-TQFP-EP, 14 x 14 mm |
| Total Port Count | 6 ports |
| Integrated Gigabit PHY Ports | 5 ports |
| Integrated PHY Data Rates | 10/100/1000 Mbps |
| Configurable MAC Port | 1 port |
| Supported MAC Interfaces | GMII, RGMII, MII, and RMII |
| Management Interfaces | I2C and SPI |
| Ethernet Layer | Managed Layer 2 |
Principais diferenciais
- Five integrated Gigabit PHYs consolidate local copper connectivity (vs KSZ9896CTXI)
- The sixth port supports four selectable MAC interfaces (vs KSZ9897RTXC)
- Integrated host management simplifies controller integration (vs KSZ9897RTXC)
Notas de projeto
Use the Microchip land pattern and exposed-pad geometry from document DS00002390C without substituting a generic 128-TQFN pattern. Keep the exposed pad connected to the appropriate ground plane and install thermal vias within or near the pad footprint. Place the PHY-side and digital-interface decoupling capacitors close to their pins to limit supply disturbance during simultaneous multi-port traffic.
Select the sixth-port MAC mode before finalizing PCB routing because GMII, RGMII, MII, and RMII have different signal widths, clocking arrangements, and routing constraints. Follow the manufacturer’s interface-layout guidance, provide continuous reference planes, avoid stubs, and apply the specified length matching. If the port will connect to another switch rather than a processor, verify that the remote interface mode and timing expectations are compatible.
Design the power rails for the combined switching core, five integrated PHYs, and external MAC interface rather than only the unloaded controller. Confirm capacitor voltage ratings, DC bias characteristics, ripple tolerance, and startup sequencing against the manufacturer requirements. Monitor temperature and supply margin during sustained all-port traffic because Ethernet PHYs and digital logic can create changing load profiles even when link rates remain constant.
Do not treat a related KSZ9896 ordering suffix as automatically interchangeable. The configuration strap resistors and RESET_N rising-edge sampling behavior must match the intended mode. Also avoid assuming that the sixth port includes an integrated copper PHY: it is a configurable MAC interface requiring the appropriate external network components. Verify all 128 pin assignments and the exposed-pad connection against the official data sheet before release to manufacturing.
Informações de conformidade
The component is an Ethernet switch rather than an automotive-qualified power device, so AEC-Q100 is not applicable. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations should be confirmed from the manufacturer’s current product declarations or quality documentation.
