DM9161AEP Product Brief 10/100 Mbps Fast Ethernet Physical Layer Single Chip Transceiver June 2008 Rev.1.0 The DM9161A is a physical layer, single-chip, and low power transceiver for 100BASE-TX and 10BASE-T operations. On the media side, it provides a direct interface either to Unshielded Twisted Pair Category 5 Cable (UTP5) for 100BASE-TX Fast Ethernet, or UTP5/UTP3 Cable for 10BASE-T Ethernet. Through the Media Independent Interface (MII), the DM9161A connects to the Medium Access Control (MAC) layer, ensuring a high inter operability from different vendors. TheDM9161A uses a low power and high performance advanced CMOS process. It contains the entire physical layer functions of 100BASE-TX as defined by IEEE802.3u, including the Physical Coding Sublayer (PCS), Physical Medium Attachment (PMA), Twisted Pair Physical Medium Dependent Sublayer (TP-PMD), 10BASE-TX Encoder/Decoder (ENC/DEC), and Twisted Pair Media Access Unit (TPMAU). The DM9161A provides a strong support for the auto-negotiation function, utilizing automatic media speed and protocol selection. Furthermore, due to the built-in wave shaping filter, the DM9161A needs no external filter to transport signals to the media in 100BASE-TXBASE-TX or 10BASE-TBASE-T Ethernet operation. Block Diagram 25M OSCI LED1-4 LED TX CGM Driver NRZ 4B/5B Parallel NRZI to MLT-3 Scrambler to 100TXD+/- Encoder to Serial MLT-3 Driver NRZI Rise/Fall Time AutoMDIX CTL 25M CLK 125M CLK MII MII Interface/ Signals Control Code- NRZI 4B/5B Serial to MLT-3 to Adaptive group Descrambler to RXI+/- Decoder Parallel NRZI EQ Alignment NRZ RX CRM Digital Logic RX RXI+/- 10BASE-T Module TX 10TXD+/- Collision Carrier Auto- Register Detection Sense Negotiation Specifications Fully comply with IEEE 802.3 / IEEE 802.3u 10Base-T/ 100Base-TX, ANSI X3T12 TP-PMD 1995 standard Support MDI/MDI-X auto crossover function (Auto-MDI) Support Auto-Negotiation function, compliant with IEEE 802.3u Fully integrated Physical layer transceiver On-chip filtering with direct interface to magnetic transformer Selectable repeater or node mode Selectable MII or RMII (Reduced MII) mode for 100Base-TX and 10Base-TX. Selectable MII or GPSI (7-Wired) mode for 10Base-T Selectable full-duplex or half-duplex operation MII management interface with maskable interrupt output capability Provide Loopback mode for easy system diagnostics LED status outputs indicate Link/ Activity, Speed10/100 and Full-duplex/Collision. Support Dual-LED optional control Single low power Supply of 3.3V with an advanced CMOS technology Very Low Power consumption modes: Power Reduced mode (cable detection) Power Down mode Selectable TX drivers for 1:1 or 1.25:1 transformers for additional power reduction. 1: 1 transformers only when HP Auto-MDIX Enable . Compatible with 3.3V and 5.0V tolerant I/Os, 48-pin LQFP Application VoIP CPE (ATA, IP Phone, Video Phone) IP STB, IPC, Internet Radio IP CAM, DVR, Router Ordering Information Part Number Pin Count Package DM9161AE 48 LQFP DM9161AEP 48 LQFP(Pb-Free) DAVICOM Semiconductor, Inc. No.6, Li-Hsin Rd.VI, Science Park, Hsin-Chu, Taiwan, R.O.C. TEL: 886-3-5798797 FAX: 886-3-5646929 E-mail: sales davicom.com.tw