KSZ8851SNLI

Controllers Overview

The KSZ8851SNLI is a single-chip Fast Ethernet controller integrating a 10/100 Mbps PHY, MAC, and SPI interface. It supports IEEE 802.3/802.3u standards with data rates of 10 Mb/s and 100 Mb/s. The device features an SPI clock speed up to 40 MHz, 12 KB RX FIFO, and 6 KB TX FIFO. Power supplies include a single 3.3V VDD and selectable 1.8V, 2.5V, or 3.3V VDD_IO. Operating temperature range is -40°C to +85°C. Package is 32-pin QFN (5 mm x 5 mm).

Controllers Feature Summary

• Integrated MAC and PHY compliant with IEEE 802.3/802.3u standards.
• SPI interface supporting high throughput applications up to 40 MHz.
• Wake-on-LAN functionality including Magic Packet and Energy Detect.
• LinkMD cable diagnostic capabilities for length and fault detection.

Controllers Applications

• Video/Audio Distribution Systems
• Voice over IP (VoIP) and Analog Telephone Adapters (ATA)
• Industrial Control Sensor Devices

Controllers Procurement Notes

Verify the industrial temperature grade suffix 'I' (-40°C to +85°C) against commercial variants. Confirm package type is 32-QFN. Check RoHS compliance status in latest datasheet revision DS00002381C.

Controllers Selection Notes

Select this component for embedded systems requiring SPI connectivity. Ensure host MCU supports SPI clock speeds up to 40 MHz. Verify power supply requirements match available 3.3V and I/O voltage options.

Controllers Part Context

Part of the KSZ8851 family offering single-port Ethernet control. The SNLI variant specifically denotes industrial temperature rating compared to commercial SNL version. Designed for cost-effective Ethernet integration in microcontroller-based designs.

Controllers Replacement Considerations

KSZ8851SNL is the commercial temperature equivalent. ENC28J60T-I/ML is listed as a similar alternative by distributors but lacks integrated PHY.

Controllers FAQ

What is the maximum SPI clock speed?

The SPI interface supports clock speeds up to 40 MHz.

Does the KSZ8851SNLI support Wake-on-LAN?

Yes, it supports Magic Packet, Wake-Up Frame, Network Link State, and Energy Signal Technology.

What is the operating temperature range?

The industrial grade KSZ8851SNLI operates from -40°C to +85°C.