LXT9782 datasheet(3/78 Pages) INTEL

Part #	LXT9782

Description	Fast Ethernet 10/100 Multi-Port Transceiver with Serial MII

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Manufacturer	INTEL [Intel Corporation]

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Datasheet

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Fast Ethernet 10/100 Multi-Port Transceiver with Serial MII — LXT9762/9782

Contents.

1.0

Preliminary Pin Assignments and Signal Descriptions ...........................10

2.0

Functional Description...........................................................................................20

2.1

Introduction.......................................................................................................... 20

2.1.1

OSP™ Architecture ................................................................................ 20

2.1.2

Comprehensive Functionality ................................................................. 20

2.2

Interface Descriptions.......................................................................................... 21

2.2.1

10/100 Network Interface ....................................................................... 21

2.2.2

SMII Data Interface ................................................................................ 22

2.2.3

Configuration Management Interface ..................................................... 22

2.3

Operating Requirements ..................................................................................... 25

2.3.1

Power Requirements.............................................................................. 25

2.3.2

Clock Requirements ............................................................................... 25

2.4

Initialization.......................................................................................................... 25

2.4.1

Hardware Configuration Settings ........................................................... 26

2.4.2

Reset ......................................................................................................27

2.4.3

Power-Down Mode ................................................................................. 28

2.5

Link Establishment .............................................................................................. 28

2.5.1

Auto-Negotiation..................................................................................... 28

2.5.2

Parallel Detection ................................................................................... 29

2.6

Serial MII Operation ............................................................................................ 29

2.6.1

Reference Clock..................................................................................... 31

2.6.2

SYNC Pulse ........................................................................................... 31

2.6.3

Transmit Data Stream ............................................................................31

2.6.4

Receive Data Stream ............................................................................. 32

2.6.5

Loopback................................................................................................ 33

2.6.6

Collision.................................................................................................. 33

2.7

100 Mbps Operation............................................................................................ 34

2.7.1

100BASE-X Network Operations ........................................................... 34

2.7.2

.100BASE-X Protocol Sublayer Operations ........................................... 35

2.8

10 Mbps Operation.............................................................................................. 39

2.8.1

10T Preamble Handling.......................................................................... 40

2.8.2

10T Dribble Bits...................................................................................... 40

2.8.3

10T Link Test.......................................................................................... 40

2.8.4

10T Jabber ............................................................................................. 40

2.9

Monitoring Operations .........................................................................................40

2.9.1

Serial LED Functions.............................................................................. 40

2.9.2

Per-Port LED Driver Functions ...............................................................42

2.9.3

Monitoring Auto-Negotiation ................................................................... 43

2.9.4

Using the Quick Status Register ............................................................ 44

2.10

Boundary Scan (JTAG1149.1) Functions............................................................ 44

2.10.1 Boundary Scan Interface........................................................................ 44

2.10.2 State Machine ........................................................................................ 45

2.10.3 Instruction Register ................................................................................ 45

2.10.4 Boundary Scan Register ........................................................................ 45

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