DM9161BEP Datasheet, PDF (1/3 Pages) Davicom Semiconductor, Inc. – 10/100 Mbps Fast Ethernet Physical Layer Single Chip Transceiver

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.