Reflection analysis of signal transmission in 32-bit CPU based SiP

Author

Tao, Zerong ; Wu, Liji ; Zhang, Xiangmin

Author_Institution

Tsinghua Nat. Lab. for Inf. Sci. & Technol., Tsinghua Univ., Beijing, China

fYear

2011

fDate

25-28 Oct. 2011

Firstpage

743

Lastpage

746

Abstract

Signal integrity is an important issue in SiP (System in Package) which has complex interconnection and communication among chips in one package. The researches concerning both reflection and crosstalk are of great significance. This paper focuses on the study of restraining reflection of one transmission line which is the fundamental element of signal quality. The simulation and analysis are based on a SiP which packages four components together, including a 32-bit CPU (Loongson 1B) and three memories (one Flash and two EEPROMs). Through analysis and comparison, a best method of impedance matching to restrain reflection is designed which reduces overshoot by 98.68% and reduces undershoot by 79.26%, compared with the situation without impedance matching.

Keywords

signal processing; system-in-package; CPU based SiP; crosstalk; impedance matching; reflection analysis; signal integrity; signal quality; signal transmission; system in package; transmission line; EPROM; Gold; Impedance; Impedance matching; Radio frequency; Reflection; Impedance matching; Reflection; System in Package (SiP);

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC (ASICON), 2011 IEEE 9th International Conference on

Conference_Location

Xiamen

ISSN

2162-7541

Print_ISBN

978-1-61284-192-2

Electronic_ISBN

2162-7541

Type

conf

DOI

10.1109/ASICON.2011.6157312

Filename

6157312