AN983B Datasheet, PDF (91/91 Pages) List of Unclassifed Manufacturers – PCI/miniPCI-to-Ethernet LAN Controller

AN983B PCI/miPCI Fast Ethernet Controller with integrated PHY
4). Provide sample power and ground planes
Power
Trace
Power
Switch
AN983B
Power
PLANE
AN983B
Power
Switch
VCC FROM PCI
Not Suggestted
VCC FROM PCI
Good
GND plane
1). It is a good idea to fill in unused areas of the signal planes with solid copper
2). The signal ground region should be one continuous, unbroken plane extending from the
transformer through the rest of the board.
3). On right angle is recommend when partition the Vcc and GND plane.
4). For EMI consideration, please add 0.1uF caps between system GND and chassis GND.
5). Void the power and ground plane directly under the transformer.
6). The isolation voltage of the transformer should be rated to be greater than 2kv.
7). The sample board Vcc and GND plane at below side.
RJ45
Transformer
VCC PLANE
UNDER
CHIP
Rev. 1.8
Chassis
Ground
System
Ground
ADMtek Inc.
www.admtek.com.tw