DM9801E Product Brief

1M Home Phoneline Network Physical Layer Single Chip Transceiver

June 2008 Rev.1.0

The DM9801 is a physical-layer, single-chip, low-power transceiver for 1M Home

Phoneline Network applications. On the media side, it provides an interface to a

Home Phoneline wiring system. The reconciliation layer interfaces to the DM9801

either through an IEEE802.3u subset Media Independent Interface (MII) or a

pseudo-standard General Purpose Serial Interface (GPSI). A management interface is

provided by MDIO/MDC when operating in MII mode, or a Serial Peripheral

Interface bus when operating in GPSI mode.

The DM9801 uses a low-power and high-performance CMOS process. It contains the

entire physical layer functions of 1M as defined by Home Phoneline Network

Alliance, Rev. 1.1, including the Physical Coding

Sublayer, (RLL25) Encoder/Decoder (ENC/DEC), 4-wire HN Driver circuit and

receiver analog front end (AFE).

Patent-Pending Circuitry Includes:

An enhanced 4-wire Home Network transceiver circuit.

Block Diagram

HN

Secondary

Driver

Muxed

GPSI

or Mii

Interface

RLL25

Encoder

RLL25

Decoder

Master

PHY

Controller

Receiever

and

Digital PLL

Transmit

Timing

Generator

HN

Primary

Driver

Receiver

AFE

GPSI - MII

Transmit

GPSI - MII

Receive

HNA+/-

HNB+/-

Interface

Select