DM9801 Datasheet, PDF (1/61 Pages) List of Unclassifed Manufacturers – 1M home Phonrline Network Physical Layer Single Chip Transceiver

DM9801
1M Home Phoneline Network Physical Layer Single Chip Transceiver
General Description
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
GPSI - MII
Transmit
GPSI - MII
Receive
Muxed
GPSI
or Mii
Interface
RLL25
Encoder
Master
PHY
Controller
Transmit
Timing
Generator
HN
Secondary
Driver
HNB+/-
HN
Primary
Driver
HNA+/-
Interface
Select
RLL25
Decoder
Receiever
and
Digital PLL
Receiver
AFE
Preliminary
1
Version: DM9801-DS-P02
March 20, 2000