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ADM6996F

6 port 10/100 Mb/s Single Chip Ethernet Switch Controller

Infineon Technologies 

.

V1.03

Table of Contents

Chapter 1 Product Overview ........................................................................................ 1-1

1.1 Overview.......................................................................................................... 1-1

1.2 Features ............................................................................................................ 1-2

1.3 Applications ..................................................................................................... 1-2

1.4 Block Diagram ................................................................................................. 1-3

1.5 Abbreviations................................................................................................... 1-3

1.6 Conventions ..................................................................................................... 1-5

1.6.1 Data Lengths............................................................................................ 1-5

1.6.2 Pin Types.................................................................................................. 1-5

1.6.2 Register Types.......................................................................................... 1-5

Chapter 2 Interface Description ................................................................................... 2-1

2.1 Pin Diagram ..................................................................................................... 2-1

2.2 Pin Description by Function ............................................................................ 2-2

2.2.1 Twisted Pair Interface.............................................................................. 2-2

2.2.2 5th Port (MII) Interfaces.......................................................................... 2-2

2.2.3 6th Port (MII) Interfaces.......................................................................... 2-3

2.2.4 LED Interface........................................................................................... 2-5

2.2.5 EEPROM/Management Interface ............................................................ 2-6

2.2.6 Power/Ground, 48 pins............................................................................ 2-6

2.2.7 Miscellaneous .......................................................................................... 2-6

Chapter 3 Function Description ................................................................................... 3-1

3.1 Functional Descriptions ................................................................................... 3-1

3.2 10/100M PHY Block ....................................................................................... 3-1

3.3 100Base-X Module .......................................................................................... 3-1

3.4 100Base-X Receiver ........................................................................................ 3-2

3.4.1 A/D Converter.......................................................................................... 3-2

3.4.2 Adaptive Equalizer and timing Recovery Module ................................... 3-2

3.4.3 NRZI/NRZ and Serial/Parallel Decoder.................................................. 3-2

3.4.4 Data De-scrambling................................................................................. 3-3

3.4.5 Symbol Alignment .................................................................................... 3-3

3.4.6 Symbol Decoding ..................................................................................... 3-3

3.4.7 Valid Data Signal..................................................................................... 3-3

3.4.8 Receive Errors ......................................................................................... 3-4

3.4.9 100Base-X Link Monitor.......................................................................... 3-4

3.4.10 Carrier Sense ........................................................................................... 3-4

3.4.11 Bad SSD Detection................................................................................... 3-4

3.4.12 Far-End Fault .......................................................................................... 3-5

3.5 100Base-TX Transceiver ................................................................................. 3-5

3.5.1 Transmit Drivers...................................................................................... 3-5

3.5.2 Twisted-Pair Receiver.............................................................................. 3-5

3.6 10Base-T Module............................................................................................. 3-5

3.6.1 Operation Modes ..................................................................................... 3-6

3.6.2 Manchester Encoder/Decoder ................................................................. 3-6

3.6.3 Transmit Driver and Receiver ................................................................. 3-6

3.6.4 Smart Squelch .......................................................................................... 3-6

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