The architecture of a low-power and high-performance DSP 'LIOT' developed for mobile telecommunications (LIOT: low power implementation for mobile telecommunications)

摘要

Having started the introductory service of the next generation mobile communications, mobile terminals capable of broadband data transmission become more attractive. To provide applications which utilize the breadth, visual data are promising, and a DSP that achieves high operation performances with a low power consumption is indispensable. To realize those applications, we designed a new DSP architecture LIOT (low power implementation for mobile telecommunications). The key technologies adopted in the DSP to reduce the power consumption are a SIMD-type parallel operation mechanism and a clock control mechanism. With these technologies, the power consumption per operation has been reduced to about 1/12 compared to our former LSI.