January 2000 DP83891 Gig PHYTER™ 10/100/1000M General Description Features The DP83891 is the first fully integrated, feature rich Physi- ■ Fully integrated 10BASE-T,100BASE-TX and cal Layer transceiver with integrated PMD sublayers to sup1000BASE-T capable port 10BASE-T,100BASE-TX and 1000BASE-T Ethernet ■ Single Quad TX-Transformer interface for all speeds protocols. It operates on existing CAT5 cables which ■ Fully compliant to IEEE 802.3u 100BASE-TX and IEEE reduces deployment costs. 802.3z/ab 1000BASE-T specifications. Fully integrated The DP83891 is designed for easy implementation of and fully compliant ANSI X3.T12 PMD physical sublayer 10/100/1000 Mb/s Ethernet LANs. It interfaces directly to that includes adaptive equalization and Baseline WanTwisted Pair media via an external standard Quad transder compensation. former. The DP83891 connects to the MAC layer through ■ Supports Auto-MDIX the IEEE 802.3u Standard Media Independent Interface (MII) or the IEEE 802.3z Gigabit Media Independent Inter- ■ IEEE 802.3u Auto-Negotiation and Parallel Detection face (GMII). – Fully auto-negotiates between 10, 100 and 1000 Mb/s full duplex and half duplex devices Applications ■ 3.3 V MAC interfaces: – IEEE 802.3u MII The DP83891 fits applications in: – IEEE 802.3z GMII ■ 10/100/1000 Mb/s capable node cards ■ LED support (Link, Speed, Activity, Duplex, Collision, ■ Switches with 10/100/1000 Mb/s capable ports Auto-Negotiation, TX and RX indications) ■ High speed uplink ports (backbone) ■ Management Register Set (MDIO and MDC) ■ High end workstations ■ Single 3.3 V power supply – 5 V tolerant I/Os ■ 208-pin PQFP package DP83891 Gig PHYTER™ 10/100/1000M Advance Information 10BASE-T, 100BASE-TX or 1000BASE-T MII/GMII 10/100/1000 ETHERNET MAC DP83891 10/100/1000 Mb/s ETHERNET PHYSICAL LAYER 125 MH z CLOCK MAGNETICS System Diagram 10BASE-T, 100BASE-TX or RJ-45 1000BASE-T STATUS LED s TRI-STATE® is a registered trademark of National Semiconductor Corporation. © 2000 National Semiconductor Corporation Subject to change www.national.com Last Modified: 1/27/00 REVISION 0.0 DP83891 Gig PHYTER™ 10/100/1000M LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. National Semiconductor Corporation Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: [email protected] National Semiconductor Europe Fax: (+49) 0-180-530 85 86 Email: [email protected] Deutsch Tel: (+49) 0-180-530 85 85 English Tel: (+49) 0-180-532 78 32 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Asia Pacific Customer Response Group Tel: 65-254-4466 Fax: 65-250-4466 Email: [email protected] National Semiconductor Japan Ltd. Tel: 81-3-5620-6175 Fax: 81-3-5620-6179 www.national.com National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.