Broadcom BCM5221 - Page 5

Broadcom Corporation
Document 5221/5220-AN01-R Page v
Application Note ■ BCM5221
7/7/00 ■ BCM5220
REGAVDD and REGDVDD ........................................................................................................... 14
DVDD............................................................................................................................................. 14
AVDD............................................................................................................................................. 14
BIASVDD....................................................................................................................................... 14
Multi-Port Designs ..................................................................................................................................... 14
10/100 Twisted Pair MII to MDI .................................................................................................................. 15
General Layout Notes................................................................................................................................17
Analog Related Passive Component Placement ........................................................................... 17
TD+/- Trace Routing ...................................................................................................................... 17
100Base-TX and 10Base-T Signaling ........................................................................................... 17
RD+/- Trace Routing...................................................................................................................... 17
Reference Clock ............................................................................................................................ 17
Magnetics to RJ45-8...................................................................................................................... 17
Chassis Ground ............................................................................................................................. 17
Board Layer Allocation................................................................................................................... 18
Power Supply Filter Component Placement .................................................................................. 19
General Layout Recommendations ............................................................................................... 20
Thermal Information .................................................................................................................................. 21
BCM5221 vs. BCM5220.............................................................................................................................. 21