CS8904 参数 Datasheet PDF下载

CS8904

Crystal LAN™ Quad Ethernet Transceiver

TABLE OF CONTENTS

1.0 INTRODUCTION.....................................................................................................3

1.1 General Description ......................................................................................................... 3

1.2 System Applications ........................................................................................................ 4

1.3 Key Features and Benefits ............................................................................................... 4

1.3.1 Low Cost, Low Noise, More Features .................................................................... 4

2.0 PIN DESCRIPTION.................................................................................................7

2.1 Controller Interface .......................................................................................................... 8

2.2 10BASE-T Interface ........................................................................................................ 9

2.3 LED Pins .......................................................................................................................... 9

2.4 General Pins ..................................................................................................................... 9

3.0 THEORY OF OPERATION ................................................................................. 12

3.1 Overview........................................................................................................................ 12

3.2 Encoder/Decoder (ENDEC)........................................................................................... 12

3.2.1 Encoder ................................................................................................................ 13

3.2.2 Carrier Detection................................................................................................... 13

3.2.3 Clock and Data Recovery ..................................................................................... 13

3.3 10BASE-T Transceiver.................................................................................................. 13

3.3.1 10BASE-T Filters ................................................................................................. 14

3.3.2 Transmitter ............................................................................................................ 14

3.3.3 Receiver ................................................................................................................ 14

3.3.4 Collision Detection ............................................................................................... 15

4.0 FUNCTIONAL DESCRIPTION........................................................................... 16

4.1 Reset and Calibration ..................................................................................................... 16

4.1.1 Reset Operation..................................................................................................... 16

4.1.2 Allowing Time for Reset....................................................................................... 16

4.2 Mode Control ................................................................................................................. 16

4.3 Controller Interface ........................................................................................................ 16

4.3.1 Transmit and Receive Interface ............................................................................ 16

4.3.2 Control and Status Information............................................................................. 17

4.4 External Clock Oscillator............................................................................................... 19

5.0 SPECIFICATIONS................................................................................................. 20

ABSOLUTE MAXIMUM RATINGS................................................................................. 20

RECOMMENDED OPERATING CONDITIONS ............................................................. 20

DC CHARACTERISTICS................................................................................................... 20

DIGITAL INPUT/OUTPUT CHARACTERISTICS .......................................................... 21

SWITCHING CHARACTERISTICS - MODE 1................................................................ 22

SWITCHING CHARACTERISTICS - MODE 2................................................................ 24

SWITCHING CHARACTERISTICS - MODE 3................................................................ 26

SWITCHING CHARACTERISTICS - MODE 4................................................................ 28

SWITCHING CHARACTERISTICS - MODE 5................................................................ 30

10BASE-T CHARACTERISTICS ...................................................................................... 32

CRYSTAL OSCILLATOR REQUIREMENTS.................................................................. 32

6.0 PACKAGE DIMENSIONS.................................................................................... 33

CIRRUS LOGIC ADVANCED PRODUCT DATABOOK

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