DM9161BEP Product Brief - Davicom Semiconductor Inc.

DM9161BEP Product Brief
10/100 Mbps Fast Ethernet Physical Layer Single Chip Transceiver
July, 2007 Rev.1.0
The DM9161B 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 DM9161B connects to the Medium Access Control (MAC) layer, ensuring a high inter
operability from different vendors.
The DM9161B 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 Sub layer (PCS), Physical Medium Attachment (PMA), Twisted Pair
Physical Medium Dependent Sub layer (TP-PMD), 10BASE-TX Encoder/Decoder
(ENC/DEC), and Twisted Pair Media Access Unit (TPMAU).
The DM9161B 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 DM9161B needs no external filter to transport signals to the media in 100BASE-TX
or 10BASE-T Ethernet operation.
Block Diagram
Fully comply with IEEE 802.3 / IEEE 802.3u 10Base-T/ 100Base-TX, ANSI
X3T12 TP-PMD 1995 standard
Support HP MDI/MDI-X auto crossover function (HP Auto-MDIX)
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 mask able 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
Pin to pin Compatible with DM9161A.
DSP architecture PHY Transceiver.
48-pin LQFP 0,18um process
VoIP CPE (ATA, IP Phone, Video Phone)
IP STB, IPC, Internet Radio
IP CAM, DVR, Router…
Ordering Information
Part Number
Pin Count
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: [email protected]