KSZ8851 Series

10/100 Base-T/TX Ethernet Controller w/ Generic 8/16/32-bit or SPI Interface

Catalog

10/100 Base-T/TX Ethernet Controller w/ Generic 8/16/32-bit or SPI Interface

Part	Protocol	Current - Supply	Package / Case	Voltage - Supply	Supplier Device Package	Standards	Function	Operating Temperature [Max]	Operating Temperature [Min]	Interface	Contents	Primary Attributes	Primary Attributes	Supplied Contents	Utilized IC / Part	Type
Microchip Technology KSZ8851-16MLLI-TR	Ethernet	85 mA	48-LQFP	1.8 V 2.5 V 3.3 V	48-LQFP (7x7)	10/100 Base-T/TX PHY	MAC Controller	85 °C	-40 °C	Parallel
Microchip Technology KSZ8851-16MQLI	Ethernet	85 mA	128-BFQFP	1.8 V 2.5 V 3.3 V	128-PQFP (14x20)	10/100 Base-T/TX PHY	MAC Controller	85 °C	-40 °C	Parallel
Microchip Technology KSZ8851-16MLL-TR	Ethernet	85 mA	48-LQFP	1.8 V 2.5 V 3.3 V	48-LQFP (7x7)	10/100 Base-T/TX PHY	MAC Controller	70 °C	0 °C	Parallel
Microchip Technology KSZ8851SNL-TR	Ethernet		32-VFQFN Exposed Pad	1.8 V 2.5 V 3.3 V	32-QFN (5x5)	10/100 Base-T/TX PHY	Controller	70 °C	0 °C	SPI
Microchip Technology KSZ8851SNLI	Ethernet		32-VFQFN Exposed Pad	1.8 V 2.5 V 3.3 V	32-QFN (5x5)	10/100 Base-T/TX PHY	Controller	85 °C	-40 °C	SPI
Microchip Technology KSZ8851-16MLLU-TR	Ethernet	85 mA	48-LQFP	1.8 V 2.5 V 3.3 V	48-LQFP (7x7)	10/100 Base-T/TX PHY	MAC Controller	85 °C	-40 °C	Parallel
Microchip Technology KSZ8851-32MQL	Ethernet	85 mA	128-BFQFP	1.8 V 2.5 V 3.3 V	128-PQFP (14x20)	10/100 Base-T/TX PHY	MAC Controller	70 °C	0 °C	Parallel
Microchip Technology KSZ8851-16MLLI	Ethernet	85 mA	48-LQFP	1.8 V 2.5 V 3.3 V	48-LQFP (7x7)	10/100 Base-T/TX PHY	MAC Controller	85 °C	-40 °C	Parallel
Microchip Technology KSZ8851SNLI-TR	Ethernet		32-VFQFN Exposed Pad	1.8 V 2.5 V 3.3 V	32-QFN (5x5)	10/100 Base-T/TX PHY	Controller	85 °C	-40 °C	SPI
Microchip Technology KSZ8851-16MLL-EVAL							Ethernet Controller (PHY and MAC)				Board(s)	1	100BASE-TX 10BASE-T	Board(s)	KSZ8851-16MLL	Interface

Catalog

10/100 Base-T/TX Ethernet Controller w/ Generic 8/16/32-bit or SPI Interface

Key Features

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

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• Designed for high performance and high throughput applications

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• Supports 10BASE-T/100BASE-TX

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• Supports IEEE 802.3x full-duplex flow control and half-duplex back pressure collision flow control

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• Supports DMA-slave burst data read and write transfers

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

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• Supports IPv6 TCP/UDP/ICMP checksum generation and checking

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• Automatic 32-bit CRC generation and checking

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

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

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• Supports both Big- and Little-Endian processors

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• 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

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• Shared data bus for Data, Address and Byte Enable

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

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• Powerful and flexible address filtering scheme

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• Optional to use external serial EEPROM configuration for MAC address

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• Single 25MHz reference clock for both PHY and MAC

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• HBM ESD Rating 6kV

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

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

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• Enhanced power management feature with energy detect mode and soft power-down mode to ensure low-power dissipation during device idle periods

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• Comprehensive LED indicator support for link, activity and 10/100 speed (2 LEDs) - User programmable

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• Low-power CMOS design

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

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

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• Flexible package options available in:* 32-pin (5mm x 5mm) QFN KSZ8851SNL/SNLI

• * 48-pin (7mm x 7mm) LQFP KSZ8851-16MLL

• * 128-pin PQFP KSZ8851-16/32MQL

Description

The KSZ8851 is a single-port controller chip with a SPI or 8-/16-/32-bit non-PCI CPU interface. Available in 32-/48-/128-pin packages, the KSZ8851 is for applications requiring cost-effective, high-throughput Ethernet connectivity in traditional embedded systems with MCUs or MPUs. **•** KSZ8851SNL/SNLI: SPI interface, 32-pin package **•** KSZ8851-16MLL: 8-/16-bit host bus, 48-pin package **•** KSZ8851-16/32MQL: 16-/32-bit host bus, 48-pin package (-16MQL) or 128-pin package (-32MQL) The KSZ8851 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 is designed to be compliant with the appropriate IEEE 802.3u standards. An industrial temperature-grade version of the KSZ8851 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 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 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 supports Hewlett Packard (HP) Auto-MDIX thereby eliminating the need to differentiate between straight or crossover cables in applications. Microchip's complimentary and confidential [MicroCHECK](https://www.microchip.com/en-us/support/design-help/design-check-services) design review service, which offers insight from the initial concept to the final PCB layout, is available to customers who are using our products in their projects. You can confidently submit your design materials in a secure and private setting, and our expert engineers will provide individualized feedback to enhance your design. MicroCHECK design review service is subject to Microchip's [Program Terms and Conditions](https://www.microchip.com/en-us/support/design-help/design-check-services/design-check-services-program-terms-and-conditions) and requires a myMicrochip account.