LAN9117-MD

Controllers Overview

The LAN9117-MD is a single-chip 10/100 Ethernet controller from the LAN9118 family, optimized for medium-performance embedded applications. It integrates an Ethernet MAC and PHY compliant with IEEE 802.3 and 802.3u standards. The device features a high-performance SRAM-like slave interface compatible with most 16-bit microprocessors and microcontrollers. Key specifications include large transmit and receive FIFOs to handle high-latency scenarios and a memory buffer architecture that optimizes packet granularity. It supports external PHY connection via MII and includes power management features such as Wake-on-LAN.

Controllers Feature Summary

• Non-PCI Ethernet controller providing a 16-bit interface with fast bus cycles for medium-performance systems.
• Internal buffer memory stores over 200 packets, supporting automatic or host-triggered PAUSE and backpressure flow control to eliminate packet loss.
• Efficient architecture minimizes CPU overhead through support for slave DMA and programmable hold timers on interrupt pins.
• Integrated PHY fully complies with IEEE 802.3/802.3u standards, supporting 10BASE-T and 100BASE-TX modes.

Controllers Applications

• Printers and kiosks
• Security systems
• General embedded applications
• Audio distribution systems
• Basic Cable, satellite, and IP set-top boxes

Controllers Procurement Notes

Verify the manufacturer designation carefully, as SMSC was acquired by Microchip Technology. Ensure the datasheet references align with the specific revision of the LAN9117-MD part number. Confirm package availability and lead times directly with authorized distributors or the manufacturer's official channels prior to procurement planning.

Controllers Selection Notes

Select this component for embedded designs requiring a glue-less connection to 16-bit CPUs without PCI bus complexity. It is suitable for applications needing integrated PHY functionality and efficient memory usage. Consider the LAN9115-MD if lower performance requirements exist, or other LAN9118 family members for pin-compatible alternatives with different feature sets.

Controllers Part Context

The LAN9117-MD belongs to the LAN9118 family of Ethernet controllers. This family is designed to offer a range of performance levels while maintaining pin compatibility across members. The LAN9117 series specifically targets medium-performance applications, balancing cost and functionality for embedded networking solutions.

Controllers Replacement Considerations

LAN9115-MD: Lower performance member of the same family with pin compatibility. LAN9118-MI: Higher performance variant within the LAN9118 family. Verify electrical characteristics and feature sets against current design requirements before substitution.