DDR Routing Basics for Incorporating Into Your Design

Finally, deciding which memory technology to use is usually the most important criterion that may determine a system’s best performance. Designers go on adding more cores and capabilities into SoCs; however, boosting performance while achieving the highest efficiency and placing a small number of cores into a small area remains the main task. The DDR substrate in short provides these memory needs with a dense, high-performance, and low-power memory solution with either DIMM or discrete DRAM.

Here are some of the best and most commonly used DDR routing techniques that can be adopted in the design of a circuit. For DDR memory routing to sink, your design should include optimum component placement while you should have a routed design. New routing topologies will be needed in differing versions of the DDR memory that you should have an appreciation of. As was the case with the previous generations of DDR memory, the T-topology methodology of routing was suitable, although it cannot handle the higher signaling rates of DDR3 and DDR4. This is because the fly-by topology yields better success with the daisy chain patterns it features; the patterns also go a long way in augmenting signal integrity. DDR has been in use for more than two decades now, and as time went on, it has been made more enhanced to produce better throughput. The ones in the current use are DDR 3 and DDR4 while the new one in the market is DDR5.

HDI and Recommendations Regarding the HDI Routing

If you are routing DDR substrate memory, then in all probability, there are HDIs in your board design in one form or the other. This implies that to accommodate all the schematics inside the casing, you will be dealing with more layers with thin substrates, and less space between the traces, vias, and the pads. When an HDI design is carried out properly, the designer can enjoy many advantages including lesser amounts of EMI and not forgetting the capability of designing a smaller board.

To route a DDR memory configuration you have to have PCB design software that provides you with the means to achieve this effectively. This also means generating the footprints of the components and placement of those parts on the board and you also require a full set of design rules and constraints to define the length and flight times of DDR signals as desired.

EDM tools like this are already out to allow advanced must-have DDR substrate routing to keep you out of the watery of your competitors. EFPCB PCB Designer is the one that possesses these features which has been discussed and EFPCB PCB Designer will just do the job.

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