CS8952 Просмотр технического описания (PDF) - Cirrus Logic

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CS8952

CrystalLAN™ 100BASE-X and 10BASE-T Transceiver

Cirrus Logic 

CS8952

TABLE OF CONTENTS

1. SPECIFICATIONS AND CHARACTERISTICS......................................................... 3

2. INTRODUCTION ..................................................................................................... 18

2.1 High Performance Analog ............................................................................. 18

2.2 Low Power Consumption .............................................................................. 18

2.3 Application Flexibility..................................................................................... 18

2.4 Typical Connection Diagram ......................................................................... 18

3. FUNCTIONAL DESCRIPTION ................................................................................ 18

3.1 Major Operating Modes................................................................................. 20

3.1.1 100BASE-X MII Application (TX and FX) ........................................... 20

Symbol Encoding and Decoding ........................................................... 20

100 Mb/s Loopback ............................................................................... 22

3.1.2 100BASE-X Repeater Application ...................................................... 22

3.1.3 10BASE-T MII Application .................................................................. 23

Full and Half Duplex operation .............................................................. 23

Collision Detection ................................................................................ 23

Jabber ................................................................................................... 23

Link Pulses ............................................................................................ 23

Receiver Squelch .................................................................................. 23

10BASE-T Loopback ............................................................................. 23

Carrier Detection ................................................................................... 24

3.1.4 10BASE-T Serial Application .............................................................. 24

3.2 Auto-Negotiation ........................................................................................... 24

3.3 Reset Operation ............................................................................................ 25

3.4 LED Indicators............................................................................................... 25

4. MEDIA INDEPENDENT INTERFACE (MII) ............................................................. 25

4.1 MII Frame Structure ...................................................................................... 26

4.2 MII Receive Data........................................................................................... 26

4.3 MII Transmit Data.......................................................................................... 27

4.4 MII Management Interface ............................................................................ 27

4.5 MII Management Frame Structure ................................................................ 28

5. CONFIGURATION .................................................................................................. 29

5.1 Configuration At Power-up/Reset Time......................................................... 29

5.2 Configuration Via Control Pins ...................................................................... 29

5.3 Configuration via the MII ............................................................................... 29

6. CS8952 REGISTERS .............................................................................................. 30

7. DESIGN CONSIDERATIONS .................................................................................. 62

7.1 Twisted Pair Interface ................................................................................... 62

7.2 100BASE-FX Interface.................................................................................. 62

7.3 Internal Voltage Reference ........................................................................... 63

7.4 Clocking Schemes ........................................................................................ 63

7.5 Recommended Magnetics ............................................................................ 64

7.6 Power Supply and Decoupling ...................................................................... 64

7.7 General Layout Recommendations............................................................... 65

8. PIN DESCRIPTIONS ............................................................................................... 67

9. PACKAGE DIMENSIONS. ...................................................................................... 79

10. ORDERING INFORMATION ................................................................................. 80

11. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION ........... 80

12. REVISION HISTORY ............................................................................................ 81

CrystalLAN™ 100BASE-X and 10BASE-T Transceiver

2

DS206F1

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