10/100 Mbit Fast Ethernet Physical Layer TX/FX Single Chip Transceiver

The DM9161 is a physical-layer, single-chip, low-power transceiver for 100BASE-TX and 10BASE-T operations. On the media side, it provides a direct interface either to Unshielded Twisted Pair Cable 5 (UTP5) for 100BASE-TX Fast Ethernet, or UTP5/UTP3 Cable for 10BASE-T Ethernet. Through the Media Independent Interface (MII), the DM9161 connects to the Medium Access Control (MAC) layer, ensuring a high inter-operability among products from different vendors. The DM9161 uses a low-power and high-performance 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 DM9161 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 DM9161 needs no external filter to transport signals to the media in 100M or 10M Ethernet operation.

Features
- 48 pin LQFP
- 0.35 µm Process
- LED Status Pins: Link/Activity, Speed 10/100, Full Duplex/Collision
- Full-Duplex or Half-Duplex
- Compatible to IEEE802.3u
- MII and reverses MII Interface
- SPI EEPROM Interface
- 0°C - +70°C Temperature Range

Additional Documents:

DM9161 Data Sheet and Application Circuit (Link to Davicom Homepage)

General Layout Guide
DM9161 Layout Guide
How to change between DM9161 Series
DM9161 to DM9161A Changes
DM9161 Connection to HA-003 Transformer
DM9161 IBIS Model
Connecting two devices without transformers
Design Hint Connection RJ45 - Center Tabs to PHY

RoHs and further information:
Material Safety Data Sheet - Ink Marking
Material Safety Data Sheet - Laser Marking
RoHs Compliance Information
Recommended Soldering
MSL Level 3 according to IPC/JEDEC J-STD-020C
Customs clearance number: 85423190 according to
Liste vom Statistischen Bundesamt valid from 01.01.2007