Title :
Clock distribution and synchronization over 1000BASE-T Ethernet
Author :
Imrek, J. ; Hegyesi, Gy ; Kalinka, G. ; Molnár, J. ; Nagy, F.
Author_Institution :
I. Valastyan Inst. of Nucl. Res., Hungarian Acad. of Sci., Debrecen, Hungary
fDate :
Oct. 30 2010-Nov. 6 2010
Abstract :
We report on a Synchronous Ethernet based clock distribution and timestamp synchronization implementation over 1000BASE-T (Gigabit over twisted pair) Ethernet. A central 125 MHz global clock is distributed to all detector modules using only commercial off-the-shelf components. The timestamps generated on different modules has a maximum fixed offset of 24-60 ns (depending on the switch tested), and a jitter of less than 500 ps (with no clock cleaner IC being used).
Keywords :
clock distribution networks; local area networks; medical diagnostic computing; positron emission tomography; synchronisation; timing jitter; 1000BASE-T Ethernet; clock distribution; frequency 125 MHz; jitter; offset; time 24 ns to 60 ns; timestamp synchronization; Detectors; Ethernet networks; Field programmable gate arrays; IP networks; Radiation detectors; Switches; Synchronization; 1000BASE-T; Gigabit Ethernet; clock distribution; clock synchronization; synchronized Ethernet; timestamp synchronization;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2010 IEEE
Conference_Location :
Knoxville, TN
Print_ISBN :
978-1-4244-9106-3
DOI :
10.1109/NSSMIC.2010.5874287
