LXT972A Просмотр технического описания (PDF) - Intel

Номер в каталоге

Компоненты Описание

Список матч

LXT972A

3.3V Dual-Speed Fast Ethernet Transceiver

Intel 

LXT972A — 3.3V Dual-Speed Fast Ethernet Transceiver Datasheet

3.7.1 100BASE-X Network Operations ........................................................... 29

3.7.2 Collision Indication ................................................................................. 31

3.7.3 100BASE-X Protocol Sublayer Operations ............................................ 31

3.7.3.1 PCS Sublayer............................................................................ 31

3.7.3.2 PMA Sublayer ........................................................................... 34

3.7.3.3 Twisted-Pair PMD Sublayer ...................................................... 34

3.8 10Mbps Operation............................................................................................... 35

3.8.1 10T Preamble Handling ......................................................................... 35

3.8.2 10T Carrier Sense.................................................................................. 36

3.8.3 10T Dribble Bits...................................................................................... 36

3.8.4 10T Link Integrity Test............................................................................ 36

3.8.4.1 Link Failure................................................................................ 36

3.8.5 10T SQE (Heartbeat) ............................................................................. 36

3.8.6 10T Jabber ............................................................................................. 36

3.8.7 10T Polarity Correction .......................................................................... 37

3.9 Monitoring Operations......................................................................................... 37

3.9.1 Monitoring Auto-Negotiation................................................................... 37

3.9.1.1 Monitoring Next Page Exchange............................................... 37

3.9.2 LED Functions........................................................................................ 37

3.9.2.1 LED Pulse Stretching ................................................................ 38

3.10 Boundary Scan (JTAG1149.1) Functions ........................................................... 38

3.10.1 Boundary Scan Interface........................................................................ 38

3.10.2 State Machine ....................................................................................... 39

3.10.3 Instruction Register ................................................................................ 39

3.10.4 Boundary Scan Register (BSR).............................................................. 39

4.0

Application Information................................................................................................. 40

4.1 Magnetics Information......................................................................................... 40

4.2 Typical Twisted-Pair Interface............................................................................. 40

5.0

Test Specifications ........................................................................................................ 44

5.1 Electrical Parameters .......................................................................................... 44

5.2 Timing Diagrams ................................................................................................. 47

6.0

Register Definitions ....................................................................................................... 55

7.0

Package Specification ................................................................................................... 70

4

Datasheet

Share Link: