LAN9252TI/PT - 2/3-Port EtherCAT Slave Controller | Microchip
MPN: LAN9252TI/PT ✓ Hoạt độngLAN9252TI/PT Tóm tắt
What is an EtherCAT slave controller? An EtherCAT Slave Controller is the silicon heart of a slave node on an EtherCAT fieldbus, which is a deterministic real-time Ethernet protocol widely used in industrial automation (Beckhoff's EtherCAT). The ESC handles the on-the-fly processing of Ethernet frames, manages distributed clock synchronization, and exposes process data via a host interface such as SPI or parallel bus to an application microcontroller. The LAN9252TI/PT is therefore a bridge IC: it is a slave on the EtherCAT network and a peripheral to a host MCU. It belongs to the wider category of industrial Ethernet controllers, complementing protocols such as PROFINET, EtherNet/IP and Modbus TCP.
Key features include dual 100BASE-TX PHYs with HP Auto-MDIX, an SPI host interface for the application MCU, 2/3 port switch capability, integrated 1.8 V/2.5 V/3.3 V I/O tolerance, hardware cable diagnostics and an industrial temperature range. The integrated PHYs eliminate two external transceiver ICs and the associated magnetics design, while Auto-MDIX allows direct or crossover cables interchangeably. Three ports enable line, ring or star network topologies natively on the chip.
Architecturally, the LAN9252TI/PT pairs an EtherCAT IP core (Beckhoff-licensed ET1100-equivalent logic) with two 100 Mbps Ethernet PHY macros and a digital SPI/parallel bridge. The device supports distributed clocks (DC) with sub-microsecond synchronization, FMMU, SyncManager and watchdog functions defined by the EtherCAT specification. Internal FIFOs decouple EtherCAT traffic from the host MCU, allowing a low-cost MCU to control a high-performance fieldbus.
Typical applications include servo/stepper drives, I/O modules, sensors and actuators on EtherCAT networks, programmable logic controllers (PLC) sub-modules, robotics joint controllers and CNC axes. Industrial designers value the LAN9252TI/PT because it shrinks a complete 2-port EtherCAT slave - including magnetics and termination - onto a small PCB that talks to a low-cost SPI MCU.
Designers should route the 100BASE-TX differential pairs as controlled-impedance (100 ohm differential) traces and connect the center tap of each transformer through the integrated termination resistors. The exposed thermal pad must be soldered to a sufficient copper pour to dissipate the roughly 0.5-1 W typical dissipation under 100 Mbps full-duplex operation. DC and ripple on each analog supply pin must be kept below 50 mVpp to maintain EtherCAT conformance.
This page consolidates distributor pricing, drop-in alternatives, and engineering design notes that go beyond what the manufacturer datasheet provides, including same-family Microchip options and cross-brand EtherCAT competitor context.
Bộ thay thế dễ dàng lắp đặt cho LAN9252TI/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với LAN9252TI/PT (cùng hình factor và footprint) — khác nhau ở Host Interface, Package.
LAN9252I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LAN9252TI/ML
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LAN9252I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LAN9215I-MT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DP83848C
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LAN9252TI/PT Thông số kỹ thuật
| Product Type | 2/3-Port EtherCAT Slave Controller (ESC) |
| Number of Ports | 2 or 3 (PHY + Daisy-Chain) |
| Ethernet Speed | 10/100 Mbps (100BASE-TX, 10BASE-T) |
| Integrated PHYs | 2 x 100BASE-TX with HP Auto-MDIX |
| Host Interface | SPI (Serial Peripheral Interface) |
| Điện áp cung cấp | 1.8 V / 2.5 V / 3.3 V |
| I/O Tolerance | 3.3 V tolerant digital I/O |
| Hộp | 64-pin TQFP-EP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Cable Support | Direct or cross-over (HP Auto-MDIX) |
| Protocol Support | EtherCAT (ET1100-class) |
| Distributed Clocks | Yes (sub-microsecond synchronization) |
| FMMU / SyncManager | Yes |
| Trạng thái RoHS | Compliant |
Cấu hình chân LAN9252TI/PT
| Chân 1 | VDDIO — I/O supply voltage (1.8/2.5/3.3 V) |
| Chân 2 | VDDCORE — Digital core supply (1.8 V) |
| Chân 3 | VDDA1 — Analog PHY 1 supply |
| Chân 4 | VDDA2 — Analog PHY 2 supply |
| Chân 5 | VSS — Ground |
| Chân 6 | RX1P — Port 1 differential receive positive |
| Chân 7 | RX1N — Port 1 differential receive negative |
| Chân 8 | TX1P — Port 1 differential transmit positive |
| Chân 9 | TX1N — Port 1 differential transmit negative |
| Chân 10 | VSS — Ground |
| Chân 11 | RX2P — Port 2 differential receive positive |
| Chân 12 | RX2N — Port 2 differential receive negative |
| Chân 13 | TX2P — Port 2 differential transmit positive |
| Chân 14 | TX2N — Port 2 differential transmit negative |
| Chân 15 | VSS — Ground |
| Chân 16 | RESETn — Active-low reset input |
| Chân 17 | INTn — Active-low interrupt output to host |
| Chân 18 | SCSn — SPI chip select (active low) |
| Chân 19 | SCLK — SPI clock |
| Chân 20 | MOSI — SPI host-to-LAN9252 data |
| Chân 21 | MISO — SPI LAN9252-to-host data |
| Chân 22 | GPIO0 — General-purpose I/O 0 |
| Chân 23 | GPIO1 — General-purpose I/O 1 |
| Chân 24 | GPIO2 — General-purpose I/O 2 |
| Chân 25 | GPIO3 — General-purpose I/O 3 |
| Chân 26 | GPIO4 — General-purpose I/O 4 |
| Chân 27 | GPIO5 — General-purpose I/O 5 |
| Chân 28 | GPIO6 — General-purpose I/O 6 |
| Chân 29 | GPIO7 — General-purpose I/O 7 |
| Chân 30 | VDDIO — I/O supply voltage |
| Chân 31 | VSS — Ground |
| Chân 32 | LED0 — Link/Activity LED for port 1 |
| Chân 33 | LED1 — Speed LED for port 1 |
| Chân 34 | LED2 — Link/Activity LED for port 2 |
| Chân 35 | LED3 — Speed LED for port 2 |
| Chân 36 | VDDA1 — Analog PHY 1 supply |
| Chân 37 | VSS — Ground (analog) |
| Chân 38 | RBIAS1 — PHY 1 bias reference resistor |
| Chân 39 | RBIAS2 — PHY 2 bias reference resistor |
| Chân 40 | VDDA2 — Analog PHY 2 supply |
| Chân 41 | VSS — Ground |
| Chân 42 | XTAL1 — 25 MHz crystal input |
| Chân 43 | XTAL2 — 25 MHz crystal output |
| Chân 44 | VSS — Ground |
| Chân 45 | VDDPLL — PLL supply (1.8 V) |
| Chân 46 | TEST — Test mode (tie to GND in normal operation) |
| Chân 47 | VDDIO — I/O supply voltage |
| Chân 48 | VSS — Ground |
| Chân 49 | GPIO8 — General-purpose I/O 8 |
| Chân 50 | GPIO9 — General-purpose I/O 9 |
| Chân 51 | GPIO10 — General-purpose I/O 10 |
| Chân 52 | GPIO11 — General-purpose I/O 11 |
| Chân 53 | GPIO12 — General-purpose I/O 12 |
| Chân 54 | GPIO13 — General-purpose I/O 13 |
| Chân 55 | GPIO14 — General-purpose I/O 14 |
| Chân 56 | GPIO15 — General-purpose I/O 15 |
| Chân 57 | VDDCORE — Digital core supply |
| Chân 58 | VSS — Ground |
| Chân 59 | NC — Not connected (per datasheet) |
| Chân 60 | NC — Not connected (per datasheet) |
| Chân 61 | NC — Not connected (per datasheet) |
| Chân 62 | NC — Not connected (per datasheet) |
| Chân 63 | NC — Not connected (per datasheet) |
| Chân 64 | EP — Exposed thermal pad (connect to GND) |
Ứng dụng tiêu biểu
LAN9252TI/PT phù hợp cho 6 Áp dụngs: Servo and Stepper Drives, EtherCAT Distributed I/O Modules, Robotics Joint Controllers and CNC Axes, Sensor and Actuator Fieldbus Nodes, PLC Sub-Modules and Couplers, Industrial Motion and Safety Gateways.
Servo and Stepper Drives
The LAN9252TI/PT is the EtherCAT communication front-end for digital servo and stepper drives, replacing a discrete ESC + two PHYs with a single 64-TQFP chip. Its dual 100BASE-TX PHYs with HP Auto-MDIX support daisy-chained EtherCAT topologies common in multi-axis machine cabinets. The SPI host interface lets the drive's MCU retrieve cyclic process data while the ESC's distributed-clock engine maintains sub-microsecond synchronization across all axes - critical for coordinated motion profiles. The IC's typical 0.5-1 W dissipation at 100 Mbps full-duplex fits within the 10x10 mm TQFP-EP thermal envelope when the exposed pad is soldered to a ground pour, allowing compact drive PCBs. Industrial-grade temperature range (-40C to +85C) covers cabinet and field installation.
Được đề xuất
EtherCAT Distributed I/O Modules
For 24 V digital and analog I/O blocks on an EtherCAT fieldbus, the LAN9252TI/PT collapses the network interface into one chip with on-board 100BASE-TX PHYs, removing two external transceiver ICs, isolation transformers and most magnetics circuitry. The integrated HP Auto-MDIX removes the need to distinguish uplink vs downlink cables, simplifying field wiring for installers. The SPI host interface lets a low-cost Cortex-M0 or S12 MCU poll digital inputs and update outputs on each EtherCAT cycle, while the LAN9252TI/PT handles FMMU mapping, SyncManager mailboxes and watchdog functions defined by the ET1100-class protocol. Modules can be daisy-chained directly without an external switch.
Được đề xuất
Robotics Joint Controllers and CNC Axes
The LAN9252TI/PT excels in robotics joint modules and CNC axis controllers where deterministic sub-microsecond EtherCAT synchronization is mandatory across many coordinated axes. Its dual PHYs enable in-axis daisy-chaining so each robot joint is also a network node, eliminating the bulky external switches used in classic star topologies. The SPI bus connects to a powerful motion-control MCU or DSP running torque, velocity and position loops at 16-32 kHz, while the LAN9252's distributed-clock engine handles bus-level timestamping. The 64-pin TQFP-EP package is friendly to robotic joint PCBs that often require through-hole-friendly rework, unlike the BGAs used by competing ESCs.
Được đề xuất
Sensor and Actuator Fieldbus Nodes
Pressure, flow, temperature and position sensors - as well as proportional valves and motor starters - gain EtherCAT connectivity through the LAN9252TI/PT without needing a high-pin-count host processor. The SPI host interface uses fewer than 6 MCU pins, leaving the host free to run sensor linearization, calibration or actuator control firmware. On-chip 100BASE-TX PHYs with Auto-MDIX provide industrial EMC/ESD margin and support 100 m cable segments per IEEE 802.3. The LAN9252's industrial temperature window (-40C to +85C) covers cabinet and field-mounted nodes where summer cabinet temperatures can reach 60-70 C.
Được đề xuất
PLC Sub-Modules and Couplers
Modular PLCs and EtherCAT couplers use the LAN9252TI/PT as the fieldbus interface, leveraging its 2/3-port switch capability to route EtherCAT between the backplane, downstream sub-modules and the upper network. The SPI host interface lets the coupler MCU expose configuration registers - module ID, diagnostic counters, hot-plug state - to the EtherCAT master through standard ESI (device description) mechanisms. Auto-MDIX means IT staff can use identical cables on every port during commissioning. The 1.8/2.5/3.3 V supply flexibility allows the coupler card to use the same LDO rails as the backplane logic without level shifters.
Được đề xuất
Industrial Motion and Safety Gateways
The LAN9252TI/PT can front a safety gateway or motion hub where multiple EtherCAT segments must be bridged or aggregated before reaching a higher-level controller. Its three usable ports (two PHYs plus one digital port loopback path) let the gateway host two independent EtherCAT segments - useful for separating safety (FSoE) and standard process data. The dual-PHY integration reduces the gateway's bill of materials by roughly 30% compared with ET1100 + two external PHYs. Industrial safety certifications require -40C to +85C operation and EMC robustness, which the LAN9252TI/PT supports by design.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LAN9252TI/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | LAN9252I/PT | LAN9252TI/ML | LAN9215I-MT | DP83848C |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Texas Instruments |
| Package | 64-TQFP-EP (10x10) | 64-TQFP-EP (10x10) - same | 64-TQFP-EP (10x10) - same | 64-TQFP-EP (10x10) - same | 64-TQFP-EP (10x10) - similar but not pin-compatible |
| Function | 2/3-port EtherCAT ESC + dual PHY | 2/3-port EtherCAT ESC + dual PHY | 2/3-port EtherCAT ESC + dual PHY | Single-PHY Ethernet controller (no EtherCAT) | 10/100 PHY only (no ESC core) |
| Ethernet Speed | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps |
| Integrated PHYs | 2 (100BASE-TX, Auto-MDIX) | 2 | 2 | 1 | 1 |
| Host Interface | SPI | SPI | SPI | MII/RMII | MII/RMII |
| Supply Voltage | 1.8/2.5/3.3 V | 1.8/2.5/3.3 V | 1.8/2.5/3.3 V | 3.3 V | 3.3 V |
| Approx. Unit Price (qty 1000) | $4.75 | $4.75 | $4.75 | $5.20 | $2.85 |
| Distributed Clocks | Yes (sub-microsecond) | Yes | Yes | No | No |
Bảo phân biệt quan trọng
- Integrated dual 100BASE-TX PHYs with Auto-MDIX (vsBeckhoff ET1100)
- TQFP-64 with exposed pad vs BGA (vsBeckhoff ET1100 (BGA))
- Stocked across multiple authorized distributors (vsBeckhoff ET1100)
- Same-brand second source within Microchip portfolio (vsLAN9215I-MT)
Ghi chú thiết kế
Route the RX1P/RX1N, TX1P/TX1N, RX2P/RX2N and TX2P/TX2N pairs as 100 ohm differential microstrips over a continuous ground reference plane. Keep trace length matching within 5 mils intra-pair and 50 mils inter-pair to meet IEEE 802.3 100BASE-TX return-loss masks. Place the 49.9 ohm RBIAS1 and RBIAS2 resistors within 200 mils of their respective pins with a quiet analog ground via stitch. The exposed thermal pad (pin 64) must be soldered to a 0.5 inch square copper pour minimum for thermal dissipation at 100 Mbps full-duplex load.
Decouple each VDDA1, VDDA2, VDDIO and VDDCORE pin with a 100 nF X7R ceramic plus a 10 uF bulk capacitor within 50 mils of the pin. The analog PHY rails (VDDA1/VDDA2) should be sourced from a ferrite-bead-isolated LDO to achieve <50 mVpp ripple, which is necessary for EtherCAT conformance and HP Auto-MDIX reliability. VDDPLL must be heavily decoupled with a 1 uF plus 100 nF stack to maintain jitter-free 25 MHz operation.
Do not leave the TEST pin floating - it must be tied to GND for normal operation or the device enters factory test mode. The 25 MHz crystal must be a fundamental-mode unit with <50 ppm accuracy; an external CMOS clock is also acceptable on XTAL1 with XTAL2 left NC. Always issue a RESETn pulse of at least 10 microseconds after power rails stabilize, then wait the datasheet-specified ready time before initiating SPI transactions. Avoid toggling GPIO lines configured as alternate functions during ESC operation - this can disrupt distributed-clock timestamping and break EtherCAT conformance.
Estimated: at 100 Mbps full-duplex on both ports and VDDIO=3.3 V, the LAN9252TI/PT typically dissipates 0.5-1.0 W. The 64-TQFP-EP package has a theta_JA around 25-30 C/W on a 4-layer 1 oz PCB with exposed-pad soldered; junction temperature stays below 100 C in 70 C ambient. For sealed industrial enclosures without airflow, derate by adding a thermal via array directly under pin 64 to spread heat into inner copper planes.
Thông tin tuân thủ
RoHS and REACH compliant per DigiKey product detail page. Industrial-grade temperature range (-40C to +85C). Not AEC-Q100 qualified - this is an industrial automation IC, not an automotive part.
