DocumentCode :
2326199
Title :
Low power multiplexer tree design using dynamic propagation path control
Author :
Li, Nan-Shing ; Huang, Juinn-Dar ; Huang, Han-Jung
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu
fYear :
2008
fDate :
Nov. 30 2008-Dec. 3 2008
Firstpage :
838
Lastpage :
841
Abstract :
Many techniques have been proposed to reduce the power consumption of multiplexer (MUX) trees. Most of them are performed at the algorithm or circuit level. In this paper, we propose a design method at the register transfer level. In this method, each MUX has its own individual selection signal that is dynamically generated by a dedicated controller. The controller is designed to keep those selection signals as unaltered as possible since only the selection signals lying on the actual output propagation path need to be properly set. Consequently, the switching power in the MUX tree can be reduced. For a 256-to-1 MUX tree with 128-bit input width, the experiment results show that the proposed MUX tree design can reduce 58%~93% power dissipation with negligible area overhead.
Keywords :
digital signal processing chips; logic circuits; multiplexing; switching circuits; 256-to-1 multiplexer tree; dynamic propagation path control; individual selection signal; low power multiplexer tree design; switching power; word length 128 bit; Batteries; Circuits; Design engineering; Energy consumption; Multiplexing; Personal digital assistants; Portable computers; Power dissipation; Power engineering and energy; Registers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 2008. APCCAS 2008. IEEE Asia Pacific Conference on
Conference_Location :
Macao
Print_ISBN :
978-1-4244-2341-5
Electronic_ISBN :
978-1-4244-2342-2
Type :
conf
DOI :
10.1109/APCCAS.2008.4746153
Filename :
4746153
Link To Document :
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