Datasheet > DM9331A

DM9331A

更新时间： 2024-11-05 23:47:47

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DM9331A 数据手册

DM9331A

100 Mbps Twisted Pair/Fiber Ethernet Media Converter Chip

1. General Description

The DM9331A is a physical-layer, single-chip, low

power transceiver for media converter application. On

the media side, it provides a direct interface either to

Unshielded Twisted Pair Category 5 Cable (UTP5) for

100BASE-TX Fast Ethernet, and it also provides

PECL interface to connect the external fiber optical

transceiver. Through the Media Converter Interface

(MCI), the DM9331A connects to another DM9331A

for the twisted pair to the fiber media converter, or

fiber to fiber repeater.

IEEE802.3u, including the Physical Coding Sublayer

(PCS), Physical Medium Attachment (PMA), Twisted

Pair Physical Medium Dependent Sublayer (TP-PMD)

and a PECL compliant interface for a fiber optical

module, compliant with ANSI X3.166. The DM9331A

provides a strong support for the auto-negotiation

function, utilizing automatic selection of full or half-

duplex mode. Furthermore, due to the built-in wave-

shaping filter, the DM9331A needs no external filter to

transport signals to the media on the 100base-TX

Ethernet operation.

The DM9331A uses

low-power and high-

performance CMOS process. It contains the entire

physical layer functions of 100BASE-TX as defined by

2. Block Diagram

100Base-FX

PECL

Interface

100Base-

Media

PCS

Converter

Interface

100Base-TX

Transceiver

Auto-Negotiation

TX/RX Module

LED Driver

Clock

Circuit

Block

Biasing/

Power

Block

MII

Management

Control

Preliminary

Version: DM9331A-DS-P01

April 28, 2002

12 3 4 5 6 7...44

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