Intel IXP46X Manuel d'utilisateur Page 62

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Intel
®
IXP45X and Intel
®
IXP46X Product Line of Network Processors—Category
Intel
®
IXP45X and Intel
®
IXP46X Product Line of Network Processors
HDD February 2007
62 Document Number: 305261; Revsion: 004
Fast and slow transmission line networks must be considered
•PCB-board velocities
•Board FR4 ~ 4.3
Target impedance of 50 Ω ± 10%
Trace width: 5 mils
Signal Layers (1/2 oz. Copper)
Power Layer (1 oz. Copper)
Ground (GND) Layer (1 oz. Copper)
Figure 20. 8-Layer Stackup
Figure 21. 6-Layer Stackup
B2244-02
Data
Data
Data
Data
SIGNAL
GND
Data
Data
4.5 mil
5 mil
5 mil
7 mil
4.5 mil
7 mil
62 mil
17.8 mil
Component (Top) Side
Solder (Bottom) Side
L1
L2
L3
L4
L5
L6
L7
L8
Legend
POWER
B2275-02
SIGNAL
GND
POWER
4.5 mil
7 mil
62 mil
~40 mil
Legend
7 mil
4.5 mil
L1
L2
L3
L4
L5
L6
Component (Top) Side
Solder (Bottom) Side
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