LXT974A Ver la hoja de datos (PDF) - Intel
Número de pieza
componentes Descripción
Fabricante
LXT974A Datasheet PDF : 74 Pages
| |||
LXT974/LXT975 — Fast Ethernet 10/100 Quad Transceivers
2.7.2 Per Port LEDs ........................................................................................ 38
2.7.2.1 LEDn_0 ..................................................................................... 38
2.7.2.2 LEDn_1 ..................................................................................... 38
2.7.2.3 LEDn_2 ..................................................................................... 38
2.8 Operating Requirements ..................................................................................... 39
2.8.1 Power Requirements.............................................................................. 39
2.8.1.1 MII Power Requirements........................................................... 39
2.8.1.2 Low-Voltage Fault Detect .......................................................... 39
2.8.1.3 Power Down Mode .................................................................... 39
2.8.2 Clock Requirements ............................................................................... 39
3.0
Application Information......................................................................................... 40
3.1 Design Recommendations .................................................................................. 40
3.1.1 General Design Guidelines .................................................................... 40
3.1.2 Power Supply Filtering ........................................................................... 40
3.1.2.1 Ground Noise ............................................................................ 41
3.1.3 Power and Ground Plane Layout Considerations .................................. 41
3.1.3.1 Chassis Ground......................................................................... 41
3.1.4 MII Terminations .................................................................................... 41
3.1.5 The RBIAS Pin ....................................................................................... 42
3.1.6 The Twisted-Pair Interface ..................................................................... 42
3.1.7 The Fiber Interface................................................................................. 42
3.2 Magnetics Information......................................................................................... 43
3.2.1 Magnetics With Improved Return Loss Performance............................. 43
3.3 Twisted-Pair/ RJ-45 Interface.............................................................................. 44
4.0
Test Specifications.................................................................................................. 50
5.0
Register Definitions ................................................................................................ 63
6.0
Package Specification............................................................................................ 73
4
Datasheet
Share Link: 