User`s guide

i.MX53 Layout Recommendations
i.MX53 System Development User’s Guide, Rev. 1
2-4 Freescale Semiconductor
2.2 Stackup
High-speed design requires a good stackup in order have the right impedances for the critical traces. This
also determines the constraints for routing and spacing.
The recommended stackup is 8-layers, with the layer stack as shown in Figure 2-4:
Figure 2-4. Layer Stack
Figure 2-5 shows a working stack-up implementation:
Figure 2-5. Stackup Requirements