Proceedings of the Korean Institute of Information and Commucation Sciences Conference (한국정보통신학회:학술대회논문집)
- 2013.10a
- /
- Pages.386-389
- /
- 2013
SI Analysis for Quality Assurance of High-Speed Signal Interfaced Between Processor and DDR2 Memory on PCB Module
PCB Module에서의 Processor와 DDR2 메모리 사이에 인터페이스되는 고속신호 품질확보를 위한 SI해석
- Ha, Hyeon-Su (Changwon National University) ;
- Kim, Min-Sung (Changwon National University) ;
- Ha, Pan-Bong (Changwon National University) ;
- Kim, Young-Hee (Changwon National University)
- Published : 2013.10.25
Abstract
In this paper, for signal integrity analysing high-speed signal between a processor and a DDR2 memory, transient analysis is done and eye diagrams are generated using IBIS models of IC chips and S-parameters of transmission line. From the eye diagrams of such high-speed signals as DQ, DQS/DQSb, Clock, Address and Control, signal quality is assured through measuring timing and voltage margins during setup and hold times and verifying that the over-/under-shoot and the cross points of differential signals satisfy their specifications.
본 논문에서는 Processor와 DDR2 사이에 인터페이스되는 고속신호의 Signal Integrity 해석을 위해 IC Chip의 IBIS Model과 Transmission Line의 S-Parameter를 이용하여 고속신호의 Transient 해석을 수행하고 Eye Diagram을 생성하였다. 고속으로 동작하는 DQ, DQS/DQSb 신호 및 Clock, Address, Control 신호의 Eye Diagram에서 Setup/Hold 구간동안 Timing Margin과 Voltage Margin을 측정하였으며 Over-/Under-shoot 및 Differential 신호의 Cross Point가 Spec에 만족하는지 확인하여 신호의 품질을 확보하였다.