5238-DS03-405-R datasheet(3/76 Pages) BOARDCOM

3 / 76 page

Advance Data Sheet

BCM5238

1/31/03

Broa d c om Co rp o r a t i o n

Document

5238-DS03-405-R

Page i

TABLE OF CONTENTS

Section 1: Functional Description...................................................................................... 1

Overview

....................................................................................................................................................... 1

Encoder/Decoder

........................................................................................................................................ 1

Link Monitor

................................................................................................................................................. 2

Carrier Sense

............................................................................................................................................... 2

Auto-negotiation

......................................................................................................................................... 3

Digital Adaptive Equalizer

.......................................................................................................................... 3

ADC

............................................................................................................................................................... 3

Digital Clock Recovery/generator

............................................................................................................... 3

Multimode Transmit DAC

............................................................................................................................ 4

Stream Cipher

............................................................................................................................................... 4

MII Management

........................................................................................................................................... 4

SMII Interface

................................................................................................................................................ 4

Source Synchronous SMII (SSSMII) Interface

........................................................................................... 5

Interrupt mode

.............................................................................................................................................. 5

Section 2: Hardware Signal Definition Table..................................................................... 7

Section 3: Pinout Diagram ................................................................................................14

Section 4: Operational Description ..................................................................................16

Resetting the BCM5238

............................................................................................................................. 16

PHY Address

.............................................................................................................................................. 16

Loopback Mode

.......................................................................................................................................... 16

Full-duplex Mode

........................................................................................................................................ 16

10BASE-T Mode

......................................................................................................................................... 17

Isolate Mode

............................................................................................................................................... 17

Super Isolate Mode

.................................................................................................................................... 17

Auto Power-Down Mode

............................................................................................................................ 17

Jumbo Packet Mode

.................................................................................................................................. 17

Section 5: LED Display Output Modes............................................................................. 19

Description

................................................................................................................................................. 19

Serial LED Mode

......................................................................................................................................... 19

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