Microchip’s LAN9252 is a 2/3-port EtherCAT device controller (ESC) with dual integrated Ethernet PHYs which each contain a full-duplex 100BASE-TX transceiver and support 100Mbps (100BASE-TX) operation. The LAN9252 supports HP Auto-MDIX, allowing the use of direct connect or cross-over LAN cables. 100BASE-FX is supported via an external fiber transceiver. This device provides system developers a cost-effective solution for realizing EtherCAT device solutions.

The LAN9252 includes a 3 port EtherCAT device controller with 4K bytes of Dual Port memory (DPRAM), 4 SyncManagers, 3 Fieldbus Memory Management Units (FMMUs) and a 64-bit Distributed Clock.

It supports 4 Process Data Interfaces - SPI/SQI, HBI and a 16 Bit Digital IO. SPI and SQI (high speed SPI) provide a low pin count synchronous slave interface that facilitates communication between the device and a host system. Whereas, the Host Bus Interface facilitates the same via a high-speed asynchronous slave interface. For simple digital modules without micro-controllers, the LAN9252 can also operate in Digital I/O Mode where 16 digital signals can be controlled or monitored by the EtherCAT master.  

The LAN9252 can also be configured to operate via a single 3.3V supply utilizing an integrated 3.3V to 1.2V linear regulator. The internal linear regulator may also be disabled, allowing usage of a high efficiency external regulator for lower system power dissipation.

The LAN9252 is available in commercial, industrial and extended industrial temperature ranges and comes in either a 64 pin QFN or a 64 pin TQFP-EP.

Microchip's complimentary and confidential LANCheck® online design review service is available for customers who have selected our products for their application design-in*.

*The LANCheck online design review service is subject to Microchip's Program Terms and Conditions and requires a myMicrochip account.

For product comparison, please consider: LAN9253, LAN9254

• Highlights
• 2/3-port EtherCAT device controller with 3 Fieldbus Memory Management Units (FMMUs) and 4 SyncManagers
• Interfaces to 8/16-bit embedded controllers and 32-bit embedded controllers with an 8/16-bit bus
• Dual Integrated Ethernet PHYs with HP Auto-MDIX
• Cable diagnostic support
• 100 Base FX support via external transceiver
• 1.8V to 3.3V variable voltage I/O
• Integrated 1.2V core regulator for single 3.3V operation
• Low pin count, high integration and small body size package
• Target Applications
• Motor Motion Control
• Data Acquisition
• Process/Factory Automation
• Communication Modules & Interface Cards
• Sensors
• Power Grid Automation
• Building Automation
• Hydraulic & Pneumatic Valve Systems
• Operator HMI Interfaces
• Application Examples
• EtherCAT P - A fully compliant EtherCAT P example for UART communications and Motor Control
• EtherCAT Cortex M4F design example - Using SAM E54 & LAN9252