Filter
Top Products
60 Intel
®
31154 133 MHz PCI Bridge Design Guide Design Guide
Customer Reference Board
The IQ31154 CRB is implemented on eight layers. These layers are detailed in Table 22. This
example is provided as a reference; each individual 31154 application may vary.
FR-4, 0.062 in. ± 0.008, 1.0 oz. copper power/GND; ½ oz. copper signal.
§ §
Table 22. Customer Reference Board Stackup
Layers Signal
Top layer Signal layer—critical nets (clocks, S/P AD buses)
2nd layer Ground plane
3rd layer Signal layer
4th layer Power plane—(split voltage plane 3.3 and 1.3 for I/O and core)
5th layer Power plane—(also a split voltage plane 5 and 12 V)
6th layer Signal—(some minor 25 mil wide power runs included)
7th layer Ground plane
8th layer Signal layer (critical nets)