Recommended Pcb Layer Assignment For An Eight-Layer Pcb - Intel PXA27 Series Design Manual

— Be aware that industry-wide problems with black pad on ENIG (electroless Ni, Immersion
Au) render results useless.
•
Physical testing of PCBs
— Moving point probe damages pads that affect mechanical testing results. Therefore, do not
perform physical tests of PCBs.
Figure 2-2. Recommended PCB Layer Assignment for an Eight-Layer PCB
®
Intel PXA27x Processor Family Design Guide
SIGNAL-1
SIGNAL-2
GROUND-1
VCC-IO (DIVIDED)
VCC_CORE
SIGNAL-3
GROUND-2
SIGNAL-4
PCB Design Guidelines
I:2-3