KSZ9131MNXC - Gigabit Ethernet Transceiver | Microchip
MPN: KSZ9131MNXC ✓ فعالKSZ9131MNXC نمای کلی
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.
جایگزین‌های drop-in برای KSZ9131MNXC — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
KSZ9131MNX
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
KSZ9131MNXC مشخصات
| Supported Ethernet Speeds | 10/100/1000 Mbps |
| Ethernet Compliance | IEEE 802.3 |
| Supported Host Interfaces | GMII/MII/RGMII |
| I/O Voltage Tolerance | 3.3 V/2.5 V/1.8 V |
| Single-Supply Operation | 3.3 V |
| Auto-Negotiation Speeds | 10/100/1000 Mbps |
| Auto-Negotiation Duplex Modes | Half/Full duplex |
| Differential-Pair Termination | On-chip resistors |
| LDO Controller | On-chip |
| External FET Requirement | 1 FET |
| Package Type | 64-pin QFN |
| Package Dimensions | 8 x 8 mm |
| وضعیت RoHS | Compliant |
| Automotive Qualification | Not specified for KSZ9131MNXC |
راهنمای پیکربندی پین KSZ9131MNXC 8 x 8 mm
پیکربندی پین برای KSZ9131MNXC (پکیج 8 x 8 mm). شماره‌گذاری پایه‌ها، عملکردها و نمودارهای اتصال در دیتاشیت سازنده تعریف شده است. برای footprint دقیق و دستورالعمل‌های لحیم‌کاری به آن مراجعه کنید.
داده پین‌آوت تفصیلی موجود نیست برای KSZ9131MNXC.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
KSZ9131MNXC مناسب است برای 6 کاربردs: Industrial Ethernet Switches, Network Routers and Gateways, Embedded Control Platforms, Telecom Edge Equipment, Test and Measurement Equipment, Network-Connected Appliances.
Industrial Ethernet Switches
The KSZ9131MNXC fits industrial switching equipment that must support 10, 100, or 1000 Mbps links while offering GMII, MII, or RGMII host connectivity. According to the Microchip Technology KSZ9131 manufacturer datasheet, the transceiver provides IEEE 802.3 operation, automatic speed and duplex negotiation, on-chip differential-pair termination, and 3.3 V/2.5 V/1.8 V-tolerant I/O. It can be placed beside a switching fabric so each copper port receives an integrated physical layer. On-chip termination and the LDO controller reduce external component count, but the final layout must preserve controlled-impedance differential routing and follow the manufacturer's reference geometry.
پیشنهادی
Network Routers and Gateways
The KSZ9131MNXC is suitable for routers and edge gateways requiring one copper-Ethernet physical layer with flexible digital-host connectivity. Its 10/100/1000 Mbps support and auto-negotiation let the equipment adapt to the speed and duplex mode established by the connected device, while GMII, MII, and RGMII allow the designer to select the interface architecture that best matches the routing processor. The 64-pin 8 x 8 mm QFN package supports compact port-dense equipment, and the single 3.3 V supply arrangement simplifies rail planning. Thermal and signal-integrity validation must still cover the complete router board, magnetics, enclosure, and worst-case traffic conditions.
پیشنهادی
Embedded Control Platforms
Embedded controllers and industrial controllers can use the KSZ9131MNXC to add a standards-compliant copper-Ethernet connection without implementing a complete PHY externally. The transceiver supports 10, 100, and 1000 Mbps operation, automatically negotiates the available link mode, and presents GMII, MII, or RGMII to the host processor. Its 3.3 V/2.5 V/1.8 V-tolerant I/O broadens compatibility with processors operating at different interface voltages. The on-chip termination resistors and integrated LDO controller help reduce board complexity, although the embedded design must budget processor I/O timing, startup sequencing, clocking, magnetics isolation, and firmware-controlled link management.
پیشنهادی
Telecom Edge Equipment
The KSZ9131MNXC can support Ethernet access and service-edge equipment requiring flexible 10/100/1000 Mbps copper links. GMII provides high-throughput connectivity for network processors, MII supports lower-speed parallel designs, and RGMII reduces pin demand in compact systems. The IEEE 802.3-compliant transceiver, automatic link negotiation, and integrated differential termination help standardize each port while limiting board area. Because telecom edge products may operate in confined enclosures, designers should evaluate conducted and radiated emissions alongside thermal performance. The manufacturer reference layout should be followed closely, particularly around the differential pairs, supply return path, and external FET used with the on-chip LDO controller.
پیشنهادی
Test and Measurement Equipment
The KSZ9131MNXC is appropriate for test and measurement instruments that require a Gigabit Ethernet control or data link. The 10/100/1000 Mbps range supports common test-station connections, while auto-negotiation reduces configuration failures when the instrument connects to notebooks, servers, or embedded acquisition systems. GMII, MII, and RGMII permit interface selection according to the instrument's processor and clock architecture. On-chip differential-pair termination can simplify the Ethernet channel around the device, and the 64-pin QFN package keeps the PHY compact. Production testing should still include exact timing verification, link negotiation, cable-length behavior, and repeated power-cycle checks to confirm deterministic system startup.
پیشنهادی
Network-Connected Appliances
The KSZ9131MNXC enables a compact Ethernet connection in network appliances that exchange data with local infrastructure or cloud services. A system operating at Gigabit rates can use the transceiver while retaining a lower-speed fallback through automatic negotiation, improving compatibility across legacy and modern network infrastructure. The 3.3 V/2.5 V/1.8 V-tolerant I/O supports common host-interface voltages, and the single 3.3 V supply arrangement helps simplify power design. Appliance developers should select the appropriate RGMII, GMII, or MII configuration based on host timing, then validate the complete board for EMC, enclosure resonances, thermal rise, and reliable recovery after network or power interruptions.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای KSZ9131MNXC — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | KSZ9131MNX |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 64-pin QFN, 8 x 8 mm | 64-pin RoHS-compliant QFN |
| Supported Ethernet Speeds | 10/100/1000 Mbps | 10/100/1000 Mbps |
| Ethernet Standard | IEEE 802.3 | IEEE 802.3 |
| Host Interfaces | GMII/MII/RGMII | GMII/MII/RGMII |
| I/O Voltage Tolerance | 3.3 V/2.5 V/1.8 V | 3.3 V/2.5 V/1.8 V |
| Single-Supply Operation | 3.3 V with one external FET | 3.3 V with one external FET |
| Differential Termination | On-chip resistors | On-chip resistors |
| RoHS Status | Compliant | Compliant |
تفاوت‌های کلیدی
- One device supports three parallel Ethernet host interfaces (در مقابلKSZ9131MNX)
- Integrated termination reduces external Ethernet matching components (در مقابلKSZ9131MNX)
- Single-supply architecture supports compact Ethernet ports (در مقابلKSZ9131RNXU)
- RGMII support reduces host connection demand (در مقابلKSZ9131RNXV)
یادداشت‌های طراحی
Route each Ethernet differential pair as a controlled-impedance transmission line and follow the reference geometry in the Microchip Technology KSZ9131 manufacturer datasheet. Minimize stubs, avoid unnecessary layer transitions, and keep the two conductors of a pair at a consistent spacing. The on-chip termination resistors reduce external matching components, but they do not correct an incorrectly routed channel. Check the final PCB stackup, connector and magnetics locations, return paths, and Ethernet test results before production release.
Use the manufacturer pin-description table when placing decoupling, the external FET, and interface connections in the 64-pin QFN footprint. Keep the FET and local supply network close to the pins specified by the reference design, and provide a direct, low-impedance return beneath and between the sensitive signal paths. Confirm exposed-pad dimensions, solder-mask clearance, paste volume, and assembly requirements against the official package drawing. Do not infer any of these dimensions from the nominal 8 x 8 mm body size.
Evaluate the 3.3 V supply, internal LDO controller, and external FET as one power-conversion stage rather than treating the FET as an accessory. Use the manufacturer's recommended capacitor types, placement, and values, and account for startup current, line and load regulation, and the voltage drop across the FET in the worst-case supply condition. Estimated power loss equals FET current multiplied by the voltage across the FET; compare that loss with the package rating before finalizing the layout and thermal solution.
Do not substitute the 48-pin KSZ9131RNX, KSZ9131RNXU, or KSZ9131RNXV variants for the 64-pin KSZ9131MNXC without a PCB redesign. Those parts use different QFN or wettable VQFN packages and are not drop-in replacements. Also verify whether a proposed KSZ9131MNX substitution changes order-code packaging, temperature grade, or qualification status. A footprint match alone does not establish regulatory, assembly, or lifecycle equivalence.
اطلاعات انطباق
Microchip Technology identifies the 64-pin KSZ9131MNX configuration as RoHS compliant. Separate 48-pin KSZ9131RNXU and KSZ9131RNXV configurations are identified as AEC-Q100 automotive-qualified; the KSZ9131MNXC is not identified as automotive-qualified.