User`s guide

i.MX53 Layout Recommendations
i.MX53 System Development User’s Guide, Rev. 1
2-12 Freescale Semiconductor
2.5.3 DDR2 Routing Examples
Figure 2-16–Figure 2-21 show examples for the routing of DDR2 memories. These figures are a guideline
of the routing by layer.
Figure 2-16. Top DDR2 Routing
Color Legend
Color Meaning Color Meaning
Yellow ADD/CMD/CTRL Signals Purple Data Byte Group 1
Soft Blue Data Byte Group 3 White Clocks
Soft Pink Data Byte Group 0 Blue DDR_1V8
Green Data Byte Group 2 Pink DDR_VREF