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Intel
®
21143 PCI/CardBus 10/100Mb/s Ethernet LAN Controller
Design Guide 11
Figure 4 shows the 10BASE-T network connection without buffers. The required components for
this configuration are as follows:
• Terminating and decoupling components
• Transformer module (ratio of 1: for swing compensation)
• Filter transformer and common-mode chokes
• RJ45 connector
2
Figure 4. 10BASE-T Network Connection Without Buffers
GND
27
140
27
140
510 PRI SEC
TP Filters
and Chokes
78Z041
(SMD)
RJ45
GND
1: 2
1
2
3
6
8
6
9
11
49.9
49.9
0.01 µF
LJ-05142.WMF
0.1 µF
3
1
5
14
16
GND
tp_td+ 6
tp_td++ 7
tp_td- 5
tp_td-- 4
tp_rd- 9
tp_rd- 10
21143
Transmit
Path
Receive
Path
Ω
Ω
Ω
Ω
Ω
Ω