Reflection Reduction on DDR3 High-Speed Bus by Improved PSO

Table 1

The parameters in the fitness function.

No.	Name	Description	Range
1	𝐿1	Length of transmission lines	0≤𝐿𝑛≤2000 mil
2	𝐿2
3	𝐿3
4	𝑍𝐿1	Impedance of transmission lines	20 Ω ≤𝑍𝑛≤ 80 Ω
5	𝑍𝐿2
6	𝑍𝐿3
7	𝑟via	Radius of the via	0≤𝑟via≤20 mil
8	ℎvia	Length of the via	0≤ℎvia≤20 mil
9	𝑅𝑆𝑊	Value of driver resister in writing	𝑅𝑆𝑊 = {34,40}
10	𝑅𝑆𝑅	Value of driver resister in reading	𝑅𝑆𝑅 = {34,40}
11	𝑅𝐿𝑊	ODT in writing	𝑅𝐿𝑊 = {20,30,40,60,120}
12	𝑅𝐿𝑅	ODT in reading	𝑅𝐿𝑅 = {20,30,40,60,120}