The tendency that develops towards lower power comsumption, more high-powered batteries power supply system is beyond question. To batteries power source, consumer hope is portable electronic product can with " lower n executes more function " , in the meantime, numerous industry product also begins to turn and use batteries power supply.
Digital signal processor (DSP) is commonly used use a field high-poweredly at the requirement, bring about clock traversal speed to promote ceaselessly thereby. Any need high speed move and compositive the processor of thousands of 10 thousand transistor needs to reduce power comsumption as far as possible.
Came 10 years in the past, framework innovation and strategy of low power comsumption drive DSP to handle ability to be strengthened ceaselessly, MIPS function promotes ceaselessly, in the meantime, other performance data also is in get quickly improvement. Below this kind of circumstance, because have these more high-powered DSP, such as mobile phone and the battery service life that exceed the portable frequency player system that is based on DSP had stable and remarkable promotion on the whole.
The head wears type earphone and device of frequency of assonance of other portable spending is a requirement the important model of efficiency of optimal power source. In addition, industry and medical treatment product also are in ceaseless to what support advanced function tall compositive development of degree of portable equipment direction. The power source of these equipment asks greatly with exceed portable consumption kind electronic product is similar.
While DSP technology obtains rapid development, small controller (MCU) the system is facing the pressure that reduces power comsumption ceaselessly. Opposite at DSP, MCU is reducing power comsumption respect to have his distinct advantage, for example, its transistor amount is less, clock speed is inferior, and working voltage is normally inferior also.
Unlike with microamper calculative DSP, of the contemporary MCU that power source optimizes it is OK to need machine electricity accept is installed plan. Although the function of DSP exceeds MCU greatly, and also got be optimizinged significantly in power source respect, but chip design personnel is saving electric respect doable finite after all.
Groovy sex understanding
In lengthen respect of battery service life, the common sense of systematic design engineer is " affirmation of a chip is better than two chip " . Their think of a way is simple and direct, think the communication between chip is compared for certain piece on the power comsumption of communication is big, the transistor amount of two chip is more than apparently compositive the sheet of quits function chip. Nevertheless, commonsensible may not always is correct.
Begin as DSP compositive wait like module of accelerator, special communication and network peripheral piece on function, its function is mixed formidably even more to also becoming for systematic design personnel practical. But, if chip is mere,be in charge of a program to carry the sentence of open to carry out simple groovy processing or inspect, can produce a large number of meaningless power comsumption.
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