LAN9218I-MT - 10/100 Ethernet Controller | Microchip Technology
MPN： LAN9218I-MT ✓ 啟用中LAN9218I-MT 概覽
An Ethernet controller is an interface IC that connects an embedded processor or programmable controller to a wired Ethernet network. In the device hierarchy, the LAN9218I-MT belongs to the network interface controller and Ethernet interface IC class, combining a media-access-control function, physical-layer transceiver, and host-facing parallel bus. It is intended to reduce system cost while providing controlled access to Ethernet frames, status information, and packet buffers.
Verified device attributes include support for 10/100 Base-T/TX operation, a 32-bit parallel interface, HP Auto-MDIX, and 16 KB of internal receive SRAM. According to the Microchip LAN9218i data sheet, the receive FIFO can hold more than 200 received packets. Automatic flow-control packet generation can reduce packet loss when the receive FIFO approaches capacity, while external wake mechanisms provide additional low-power integration options.
The integrated PHY is designed for embedded applications where performance, flexibility, ease of integration, and system cost control are important. The parallel interface supports direct connection to host buses without requiring a separate serial Ethernet MAC interface. However, its 100-pin package and numerous host signals require careful PCB layout and enough board area for controlled impedance routing to the Ethernet magnetics.
Typical uses include industrial control systems, embedded gateways, set-top equipment, printers, building-automation controllers, and industrial data-acquisition equipment. The device is particularly appropriate when an embedded processor requires a wired 10/100 Ethernet connection and the design team wants the PHY, MAC, packet storage, and Auto-MDIX support integrated into one component.
Designers should follow the manufacturer’s reference circuit for magnetics, termination, bias resistors, decoupling, and high-speed layout. Driver compatibility and Auto-MDIX implementation must be checked against the exact LAN9218i hardware and software documentation. Although standard LAN9218 software drivers may support LAN9218i devices, the verified data sheet notes that supporting HP Auto-MDIX may require different magnetics and passive components and possibly a minor PCB change.
This page consolidates verified manufacturer and distributor information, identifies the documented same-brand alternatives, distinguishes unavailable pricing and pin-mapping data, and highlights integration constraints that are easy to miss when comparing Ethernet controllers.
直接替換替代品，適用於 LAN9218I-MT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LAN9218I-MT （相同外形與佔位） — 差異在於 Package, RoHS Status.
LAN9218-MT
✅ 直接替換聯絡詢價
查看資料表 →LAN9218I-MT-E2
✅ 直接替換📋 參考替代品（不在目錄中）
LAN9218I-MT 規格
| Product Type | Single-chip 10/100 Ethernet controller |
| Ethernet Speed | 10/100 Base-T/TX |
| Host Interface | 32-bit parallel interface |
| Integrated PHY | Yes |
| Auto-MDIX Support | HP Auto-MDIX |
| Internal Receive SRAM | 16 KB |
| Receive Packet Capacity | More than 200 received packets |
| Industrial Temperature Support | Industrial temperature grade |
| 封裝 | 100-LQFP TQFP, 14 x 14 mm |
| 腳位數 | 100 pins |
| 安裝類型 | Surface mount |
| RoHS 狀態 | Compliant |
| REACH Status | Compliant |
LAN9218I-MT 100-lqfp tqfp, 14 x 14 mm 腳位配置指南
LAN9218I-MT（100-lqfp tqfp, 14 x 14 mm 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： LAN9218I-MT.
請參閱 資料表 以查看完整腳位配置。
典型應用
LAN9218I-MT 適用於 6 應用s: Industrial Embedded Control, Building Automation Gateway, Industrial Data Acquisition, Networked Printer Controller, Industrial Communication Gateway, Embedded Test and Control Unit.
Industrial Embedded Control
The LAN9218I-MT fits an industrial embedded controller that needs a reliable wired 10/100 Ethernet connection and a direct parallel host interface. Its 32-bit host bus can connect to an embedded processor or microcontroller without requiring a serial Ethernet MAC, while the integrated PHY reduces the number of external active devices. The verified industrial-temperature-support positioning is useful for factory equipment, but the exact temperature range must be checked against the manufacturer data sheet. The design should follow the reference magnetics, passive network, decoupling, and controlled-impedance layout. Software integration must also verify driver compatibility and whether the selected LAN9218i hardware configuration requires Auto-MDIX-specific magnetics or passive changes.
推薦
Building Automation Gateway
The LAN9218I-MT is suitable for a building-automation gateway that connects embedded supervisory equipment to a 10/100 Ethernet network. The controller combines a 10/100 Base-T/TX PHY, packet handling, 16 KB of receive SRAM, and a 32-bit parallel host interface in one 100-LQFP device. More than 200 packets can be held in the receive FIFO, while automatic flow-control packet generation helps address FIFO congestion. For a gateway, HP Auto-MDIX can simplify cabling arrangements, although the verified manufacturer data sheet notes that magnetics and passive components may need to change. Board design must preserve the reference network and provide adequate copper and layout control for the 100-pin package.
推薦
Industrial Data Acquisition
The LAN9218I-MT can provide the Ethernet uplink in an industrial data-acquisition system that gathers sensor information in an embedded enclosure and forwards it to a supervisory host. The 32-bit parallel interface supports integration with a host processor, while the integrated Ethernet PHY reduces external interface complexity. The 16 KB receive buffer can hold more than 200 packets, and the controller can generate flow-control packets automatically when its receive FIFO becomes too full. This is useful when traffic arrives in bursts or the host cannot service the network continuously. For reliable deployment, use the manufacturer reference network, isolate Ethernet magnetics appropriately, maintain short high-speed traces, and verify industrial temperature and power requirements from the complete data sheet.
推薦
Networked Printer Controller
The LAN9218I-MT is appropriate for an embedded printer controller requiring a standard 10/100 Ethernet port for job transfer, status reporting, and network management. The integrated 10/100 PHY and 32-bit parallel interface allow a dedicated embedded processor to handle the network path while the printer engine remains focused on its primary workload. Its internal 16 KB receive SRAM provides packet buffering for burst traffic, and HP Auto-MDIX simplifies installation by supporting automatic cable-polarity and pair-detection behavior. The manufacturer’s reference circuit remains essential for Ethernet magnetics, termination, bias components, and layout. Before production release, validate the exact driver, firmware, and Auto-MDIX hardware configuration against the selected LAN9218i variant.
推薦
Industrial Communication Gateway
The LAN9218I-MT suits an industrial communication gateway that bridges embedded serial or fieldbus data to a 10/100 Ethernet infrastructure. Its parallel 32-bit interface permits direct host-bus integration, while the Ethernet controller manages frame reception, buffering, and flow control without an additional PHY. The verified 16 KB receive SRAM can store more than 200 packets, which is valuable when upstream network traffic arrives in bursts or the gateway processor is occupied with protocol conversion. HP Auto-MDIX can reduce installation complexity in cabinets where cable routing varies. Firmware must confirm register compatibility and driver support, while the PCB must follow the manufacturer’s magnetics and passive-network reference design. Industrial suitability must be validated against exact temperature limits.
推薦
Embedded Test and Control Unit
The LAN9218I-MT can serve as the communications controller in an embedded test or control unit that must exchange commands and measurement data over 10/100 Ethernet. The integrated PHY, packet FIFO, and parallel host interface reduce external component count and make the controller appropriate for compact embedded equipment. Receive buffering of more than 200 packets helps isolate the host from momentary network congestion, while automatic flow-control packets can reduce packet loss when the FIFO fills. The 100-LQFP package requires adequate PCB area and disciplined assignment of host, power, clock, and Ethernet-magnetics nets. Firmware engineers should verify that the host driver, interrupt model, and selected ordering code match the exact LAN9218I-MT variant before production release.
推薦
推薦產品摘要
工程參考資料，適用於 LAN9218I-MT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LAN9218-MT | LAN9218I-MT-E2 |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-LQFP TQFP, 14 x 14 mm | 100-LQFP TQFP, 14 x 14 mm | 100-LQFP TQFP, 14 x 14 mm |
| Ethernet Speed | 10/100 Base-T/TX | 10/100 Base-T/TX | 10/100 Base-T/TX |
| Host Interface | 32-bit parallel | 32-bit parallel | 32-bit parallel |
主要差異化特點
- Verified industrial-temperature-support designation (對比LAN9218-MT)
- Explicitly documented functional-equivalent ordering option (對比LAN9218I-MT-E2)
- High integration in the same family (對比LAN9218-MT)
設計說明
Follow the manufacturer’s Ethernet reference layout rather than improvising a generic Ethernet front end. The verified data sheet specifically notes that HP Auto-MDIX may require different magnetics and passive components from earlier LAN9218 designs, and possibly a minor PCB change. Place the controller, magnetics, termination network, and crystal or clock components according to the reference design, and preserve short return paths for every high-speed signal.
Do not assume that identical package names alone prove drop-in compatibility. Before fitting LAN9218-MT or LAN9218I-MT-E2, compare the complete manufacturer ordering information, pin assignments, exposed-pad connection, temperature range, and clock requirements. The verified excerpts establish family and functional-equivalence relationships but do not provide complete alternate-part tables, so production substitution requires engineering review of the manufacturer documentation.
Use the manufacturer-specified supply voltage, decoupling network, and power-sequencing arrangement. The supplied excerpts confirm a 100-LQFP integrated Ethernet controller but do not provide verified operating and absolute-maximum voltage values, so no voltage margin can be calculated from the available data. Review the official LAN9218i data sheet for supply rails, current consumption, power-on behavior, and exposed-pad requirements before finalizing the power tree.
Route the parallel host bus and Ethernet differential pairs with continuity and impedance control in mind. The 32-bit host interface creates many simultaneous nets on a 100-pin device, so maintain a stable reference plane, minimize unnecessary vias, and match host-bus topology to the embedded processor requirements. Treat Ethernet differential routing as a controlled-impedance structure and follow the reference placement of magnetics and termination components.
合規資訊
The verified Abacus listing states EU RoHS Compliant and REACH Compliant. No verified AEC-Q100, lead-free, halogen-free, or conflict-minerals statement was supplied, so those fields remain unknown.
