The KSZ8851M-series is a single-port controller chip with a non-PCI CPU interface and is available in 8/16-bit or 32-bit bus designs.

The 48-pin LQFP KSZ8851-16MLL is for applications requiring high performance from single-port Ethernet Controller with 8-bit or 16-bit generic processor interface. The KSZ8851-16MLL offers a cost-effective solution for adding high-throughput Ethernet connectivity to traditional embedded systems.

The KSZ8851-16MLL is a single chip, mixed analog/digital device offering Wake-on-LAN technology for effectively addressing Fast Ethernet applications. It consists of a Fast Ethernet MAC controller, an 8-bit or 16-bit generic host processor interface and incorporates a unique dynamic memory pointer with 4-byte buffer boundary and a fully utilizable 18KB for both TX (allocated 6KB) and RX (allocated 12KB) directions in host buffer interface.The KSZ8851-16MLL is designed to be fully compliant with the appropriate IEEE 802.3 standards.

An industrial temperature-grade version of the KSZ8851-16MLL, the KSZ8851-16MLLI is also available.Physical signal transmission and reception are enhanced through the use of analog circuitry, making the design more efficient and allowing for lower-power consumption.

The KSZ8851-16MLL is designed using a low-power CMOS process that features a single 3.3V power supply with options for 1.8V, 2.5V or 3.3V VDD I/O. The device includes an extensive feature set that offers management information base (MIB) counters and CPU control/data interfaces with single shared data bus timing.

 The KSZ8851-16MLL includes unique cable diagnostics feature called LinkMD®. This feature determines the length of the cabling plant and also ascertains if there is an open or short condition in the cable. Accompanying software enables the cable length and cable conditions to be conveniently displayed. In addition, the KSZ8851-16MLL supports Hewlett Packard (HP) Auto-MDIX thereby eliminating the need to differentiate between straight or crossover cables in applications.

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  is subject to Microchip's  and requires a myMicrochip account.

  Integrated MAC and PHY Ethernet Controller fully compliant with IEEE 802.3/802.3u standards

  Designed for high performance and high throughput applications

  Supports 10BASE-T/100BASE-TX

  Supports IEEE 802.3x full-duplex flow control and halfduplex backpressure collision flow control

  Supports DMA-slave burst data read and write transfers

  Supports IP Header (IPv4)/TCP/UDP/ICMP checksum generation and checking

  Supports IPv6 TCP/UDP/ICMP checksum generation and checking

  Automatic 32-bit CRC generation and checking

  Simple SRAM-like host interface easily connects to most common embedded MCUs.

  Supports multiple data frames for transmit and receive without address bus and byte-enable signals

  Supports both Big- and Little-Endian processors

  Larger internal memory with 12K Bytes for RX FIFO and 6K Bytes for TX FIFO. Programmable low, high and overrun watermark for flow control in RX FIFO

  Shared data bus for Data, Address and Byte Enable

  Efficient architecture design with configurable host interrupt schemes to minimize host CPU overhead and utilization

  Powerful and flexible address filtering scheme

  Optional to use external serial EEPROM configuration for MAC address

  Single 25MHz reference clock for both PHY and MAC

  HBM ESD Rating 6kV

Power Modes, Power Supplies, and Packaging

  Single 3.3V power supply with options for 1.8V, 2.5V and 3.3V VDD I/O

  Built-in integrated 3.3V or 2.5V to 1.8V low noise regulator (LDO) for core and analog blocks

  Enhanced power management feature with energy detect mode and soft power-down mode to ensure low-power dissipation during device idle periods Comprehensive LED indicator support for link, activity and 10/100 speed (2 LEDs) - User programmable

  Low-power CMOS design

  Commercial Temperature Range: 0°C to +70°C

  Industrial Temperature Range: -40°C to +85°C

  Flexible package options available in 48-pin (7mm x 7mm) LQFP KSZ8851-16MLL or 128-pin PQFP KSZ8851-16/32MQL