Shenzhen Koben Electronics Co., Ltd.
Shenzhen Koben Electronics Co., Ltd.
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DM9161AEP 10/100 Mbps Fast EthernetPhysical Layer Single Chip Transceiver
General Description
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-TX or 10BASE-T Ethernet operation.
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