Glitch reduction in digit-serial recursive filters using retiming
2005 (English)In: Proc. 12th IEEE Int. Conf. on Electronics, Circuits and Systems, ICECS'05, 2005Conference paper (Refereed)
In this work, we study how retiming can be used to reduce glitches in digit-serial recursive filters. It is a well known fact that glitches can make up a large portion of the dynamic power consumption in digital systems. Digit-serial recursive systems contain registers that can be retimed to reduce the amount of glitches. A second-order digit-serial LDI allpass filter has been implemented to verify this statement. It is shown that retiming can reduce the power consumption with about 20% for small digit-sizes without affecting the throughput of the filter. We also show that introducing a large number of registers in the filter structure will increase the current consumption. This trade-off, between reducing the amount of glitches and the increase in the number of registers, is also considered in this work.
Place, publisher, year, edition, pages
all-pass filters, digital filters, recursive filters
National CategoryOther Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:liu:diva-21851DOI: 10.1109/ICECS.2005.4633549ISBN: 978-9972-61-100-1OAI: oai:DiVA.org:liu-21851DiVA: diva2:241829