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KSZ8841-16

Single-Port Ethernet MAC Controller with Non-PCI Interface

Micrel 

Micrel, Inc.

Features

• Single chip Ethernet controller with IEEE802.3u

support

• Supports 10BASE-T/100BASE-TX

• Supports IEEE 802.3x full-duplex flow control and

half-duplex backpressure collision flow control

• Supports burst data transfers

• 8KB internal memory for RX/TX FIFO buffers

• Early TX/RX functions to minimize latency through the

device

• Optional to use external serial EEPROM configuration

for both KSZ8841-16MQL and KSZ8841-32MQL

• Single 25MHz reference clock for both PHY and MAC

Network Features

• Fully integrated to comply with IEEE802.3u standards

• 10BASE-T and 100BASE-TX physical layer support

• Auto-negotiation: 10/100Mbps full and half duplex

• Adaptive equalizer

• Baseline wander correction

Power Modes, Power Supplies, and Packaging

• Single power supply (3.3V) with 5V tolerant I/O

buffers

• Enhanced power management feature with power-

down feature to ensure low-power dissipation during

device idle periods

• Comprehensive LED indicator support for link,

activity, full/half duplex, and 10/100 speed (4 LEDs)

– User programmable

• Low-power CMOS design

• Commercial Temperature Range: 0oC to +70oC

• Industrial Temperature Range: –40oC to +85oC

• Available in 128-pin PQFP and 100-ball LFBGA (128-

pin LQFP optional)

KSZ8841-16/32 MQL/MVL/MBL

Additional Features

In addition to offering all of the features of a Layer 2

controller, the KSZ8841M offers:

• Dynamic buffer memory scheme

– Essential for applications such as Video over IP

where image jitter is unacceptable

• Flexible 8-bit, 16-bit, and 32-bit generic host

processor interfaces

• Micrel LinkMD™ cable diagnostic capabilities to

determine cable length, diagnose faulty cables, and

determine distance to fault

• Wake-on-LAN functionality

– Incorporates Magic Packet™, network link state,

and wake-up frame technology

• HP Auto MDI-X™ crossover with disable/enable

option

• Ability to transmit and receive frames up to 1916

bytes

Applications

• Video Distribution Systems

• High-end Cable, Satellite, and IP set-top boxes

• Video over IP

• Voice over IP (VoIP) and Analog Telephone Adapters

(ATA)

• Industrial Control in Latency Critical Applications

• Motion Control

• Industrial Control Sensor Devices (Temperature,

Pressure, Levels, and Valves)

• Security and Surveillance Cameras

Markets

• Fast Ethernet

• Embedded Ethernet

• Industrial Ethernet

October 2007

2

M9999-102207-1.6

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