KSZ8841-16/32MQL/MVL/MVLI/MBL Single-Port Ethernet MAC Controller with Non-PCI Interface Rev. 1.6 General Description The KSZ8841-series single-port chip includes PCI and non-PCI CPU interfaces, and are available in 8/16-bit and LinkMD 32-bit bus designs. This datasheet describes the Physical signal transmission and reception are enhanced KSZ8841M-series of non-PCI CPU interface chips. For through the use of analog circuitry, making the design information on the KSZ8841 PCI CPU interface chips, more efficient and allowing for lower-power consumption. refer to the KSZ8841P datasheet. The KSZ8841M is designed using a low-power CMOS The KSZ8841M is a single chip, mixed analog/digital process that features a single 3.3V power supply with 5V device offering Wake-on-LAN technology for effectively tolerant I/O. It has an extensive feature set that offers addressing Fast Ethernet applications. It consists of a Fast management information base (MIB) counters and CPU Ethernet MAC controller, an 8-bit, 16-bit, and 32-bit control/data interfaces. generic host processor interface and incorporates a unique The KSZ8841M includes a unique cable diagnostics dynamic memory pointer with 4-byte buffer boundary and feature called LinkMD . This feature determines the length a fully utilizable 8KB for both TX and RX directions in host of the cabling plant and also ascertains if there is an open buffer interface. or short condition in the cable. Accompanying software The KSZ8841M is designed to be fully compliant with the enables the cable length and cable conditions to be appropriate IEEE 802.3 standards. An industrial conveniently displayed. In addition, the KSZ8841M temperature-grade version of the KSZ8841M, the supports Hewlett Packard (HP) Auto-MDIX thereby KSZ8841MVLI, also can be ordered (see Ordering eliminating the need to differentiate between straight or Information section). crossover cables in applications. Functional Diagram 10/10 0 P1 H P A u to Base-T /T X Ho s t M A C M D I/M D I-X PH Y RX Q QM U 4K B DM A Non-P C I TX Q C h an ne l CP U 4K B E m be dd ed P ro c e s s o r Bus In te rfa c e In te rfa c e Unit Control R egisters 8 ,16 , or 3 2 -b it G e ne ric H o s t In te rfa c e MIB Counters LE D P 1 LE D 3 :0 EE PR O M Driver In te rfa c e EE PR O M I/F Figure 1. KSZ8841M Functional Diagram LinkMD is a registered trademark of Micrel, Inc. Product names used in this datasheet are for identification purposes only and may be trademarks of their respective companies. Magic Packet is a trademark of Advanced Micro Devices, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. KSZ8841-16/32 MQL/MVL/MBL Features Additional Features In addition to offering all of the features of a Layer 2 Single chip Ethernet controller with IEEE802.3u controller, the KSZ8841M offers: support Dynamic buffer memory scheme Supports 10BASE-T/100BASE-TX Essential for applications such as Video over IP Supports IEEE 802.3x full-duplex flow control and where image jitter is unacceptable half-duplex backpressure collision flow control Flexible 8-bit, 16-bit, and 32-bit generic host Supports burst data transfers processor interfaces 8KB internal memory for RX/TX FIFO buffers Micrel LinkMD cable diagnostic capabilities to Early TX/RX functions to minimize latency through the determine cable length, diagnose faulty cables, and device determine distance to fault Optional to use external serial EEPROM configuration Wake-on-LAN functionality for both KSZ8841-16MQL and KSZ8841-32MQL Incorporates Magic Packet, network link state, Single 25MHz reference clock for both PHY and MAC and wake-up frame technology HP Auto MDI-X crossover with disable/enable Network Features option Fully integrated to comply with IEEE802.3u standards Ability to transmit and receive frames up to 1916 10BASE-T and 100BASE-TX physical layer support bytes Auto-negotiation: 10/100Mbps full and half duplex Adaptive equalizer Applications Baseline wander correction Video Distribution Systems Power Modes, Power Supplies, and Packaging High-end Cable, Satellite, and IP set-top boxes Single power supply (3.3V) with 5V tolerant I/O Video over IP buffers Voice over IP (VoIP) and Analog Telephone Adapters Enhanced power management feature with power- (ATA) down feature to ensure low-power dissipation during Industrial Control in Latency Critical Applications device idle periods Motion Control Comprehensive LED indicator support for link, Industrial Control Sensor Devices (Temperature, activity, full/half duplex, and 10/100 speed (4 LEDs) Pressure, Levels, and Valves) User programmable Security and Surveillance Cameras Low-power CMOS design o o Commercial Temperature Range: 0 C to +70 C o o Markets Industrial Temperature Range: 40 C to +85 C Fast Ethernet Available in 128-pin PQFP and 100-ball LFBGA (128- pin LQFP optional) Embedded Ethernet Industrial Ethernet October 2007 2 M9999-102207-1.6