Title :
System level deterministic and random jitter measurement and extraction for multi-gigahertz memory buses
Author :
Madden, Chris ; Oh, Kyung Suk Dan ; Yuan, Xingchao Chuck
Author_Institution :
Rambus Inc., Los Altos, CA, USA
Abstract :
The data rate for today´s computer systems now reaches several gigabits per second. For example, Rambus´ XDR™ memory system supports data rates from 2.4 Gbps to 8.0 Gbps. As in data communication systems, such as Gigabit Ethernet and fibre channel, measuring jitter and understanding the sources of jitter become a critical part of the design process of optimizing system performance. We present a measurement and extraction methodology for obtaining system level jitter in terms of deterministic and random jitter. A bit error rate (BER) model is created to estimate system margin at very low BER, which is too time consuming to obtain directly through measurement. Finally, the accuracy and validity of the proposed extraction methodology is quantified and verified.
Keywords :
data communication; distributed memory systems; error statistics; jitter; local area networks; random processes; system buses; 2.4 to 8.0 Gbit/s; Rambus XDR™ memory system; bit error rate model; computer systems; data communication systems; design process; deterministic jitter measurement; fibre channel; gigabit Ethernet; multigigahertz memory buses; random jitter extraction; random jitter measurement; system level jitter; Bit error rate; Data communication; Data mining; Design optimization; Ethernet networks; Jitter; Optical fiber communication; Process design; Random access memory; System performance;
Conference_Titel :
Electrical Performance of Electronic Packaging, 2004. IEEE 13th Topical Meeting on
Print_ISBN :
0-7803-8667-1
DOI :
10.1109/EPEP.2004.1407529
