CN104102470A - Configurable and extensible pipelined multiply accumulator - Google Patents
Configurable and extensible pipelined multiply accumulator Download PDFInfo
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- CN104102470A CN104102470A CN201410353740.3A CN201410353740A CN104102470A CN 104102470 A CN104102470 A CN 104102470A CN 201410353740 A CN201410353740 A CN 201410353740A CN 104102470 A CN104102470 A CN 104102470A
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Abstract
The invention discloses a configurable and extensible pipelined multiply accumulator and belongs to the field of integrated circuit design. According to the structural design, a control selector is added, the configurable and extensible pipelined multiply accumulator is capable of implementing the calculating functions such as multiply, multiply add and multiply accumulation through different configurations according to the application requirements of users accordingly, and the calculation function of different bit widths can be implemented; meanwhile, a plurality of registers are added according to the structural design, the internal cascade and pipeline structure is realized, the electrical connection of feedback signals are adopted in the entire structural design, cascade of a plurality of configurable and extensible pipelined multiply accumulators can be achieved, efficient parallel accumulation calculation can be implemented, and the application requirements of large-capacity data and high-speed signal processing can be met; meanwhile, the structural design is compact, the calculating speed is increased greatly and efficiency is improved greatly, the extension is flexible, and user configuration is realized.
Description
Technical field
The present invention relates to a kind of multiply accumulating device, relate in particular to a kind of configurable extendible streamline multiply accumulating device.
Background technology
Digital signal processing is the theory and technology that signal is represented and processed with digital form, and it is widely used in all kinds of field of engineering technology as the very important technological means of society.In recent years, along with scientific and technical development, it is called again one of theoretical foundation of the new branch of science such as artificial intelligence, and the popularity of its importance and application is self-evident.
In system applies, the realization of nearly all complicated algorithm all be unable to do without multiply accumulating arithmetic element, realizes as FIR, FFT, Up/Down Conversion scheduling algorithm all can utilize multiply accumulating arithmetic element.In programmable logic device (PLD), utilize multiply accumulating arithmetic element to realize complicated digital signal processing, in device, the performance such as the speed of multiply accumulating arithmetic element, power consumption, bit wide has determined the processing power to digital signal, is one of functional module basic, the most most crucial in programmable logic device (PLD).
But, multiply accumulating device of the prior art can not be realized the calculation function of different bit wides conventionally, even if existing some multiply accumulating device can be realized the computing of different bit wides, these multiply accumulating device structural designs are also comparatively complicated, and arithmetic speed and efficiency are lower, thereby can not meet the real-time demand of computing.
Summary of the invention
For the problem of above-mentioned existence, the invention provides a kind of configurable extendible streamline multiply accumulating device, to overcome, multiply accumulating device structural design of the prior art is comparatively complicated causes the problem that cost is larger, also overcome multiply accumulating device arithmetic speed of the prior art and the lower problem of efficiency, thereby realize on the basis of calculation function of different bit wides in guarantee, realization takes advantage of, take advantage of add, the calculation function such as multiply accumulating, compact conformation simultaneously, expansion flexibly, realize user configurable, and arithmetic speed and also raising greatly of efficiency.
To achieve these goals, the technical scheme that the present invention takes is:
A kind of configurable extendible streamline multiply accumulating device, wherein, comprising:
Multiple input registers, it is configured to deposit the data of input;
Multiplier, it is configured to the data in multiple described registers to carry out multiply operation;
Multiple partial product registers, it is configured to deposit the output data of described multiplier;
Multiple multiplexed selector switchs, it is configured to select data of its input to export as it;
Control selector switch, it is configured to control one that selects in described multiple multiplexed selector switchs;
Totalizer, it is configured to the output of described multiple multiplexed selector switchs to carry out add operation;
Multiple output registers, it is configured to deposit the output data after described add operation.
The configurable extendible streamline multiply accumulating device of above-mentioned one, wherein, described multiple input register is four input registers, the input end of the first input register, the second input register and the 4th input register is electrically connected with the first digital input end, the second digital input end and the 3rd digital input end respectively, and the input end of the 3rd input register and carry input are electrically connected.
The configurable extendible streamline multiply accumulating device of above-mentioned one, wherein, described multiplier is a multiplier, and the output terminal of the input end of described multiplier and described the first input register and described the second input register is electrically connected.
The configurable extendible streamline multiply accumulating device of above-mentioned one, wherein, described multiple partial product registers are two partial product registers, and the input end of first partial product register and second partial product register is all electrically connected with the output terminal of described multiplier.
The configurable extendible streamline multiply accumulating device of above-mentioned one, wherein, described multiple multiplexed selector switch is four multiplexed selector switchs, the output terminal of the first input end of the first multiplexed selector switch and described first partial product register is electrically connected, the output terminal of the first input end of the second multiplexed selector switch and described second partial product register is electrically connected, the output terminal of the first input end of the 3rd multiplexed selector switch and described the 3rd input register is electrically connected, the output terminal of the first input end of the 4th multiplexed selector switch and described the 4th input register is electrically connected, simultaneously, described the first multiplexed selector switch, described the second multiplexed selector switch, the second input end of described the 3rd multiplexed selector switch and described the 4th multiplexed selector switch is all configured to " 0 " input.
The configurable extendible streamline multiply accumulating device of above-mentioned one, wherein, described control selector switch is a control selector switch, and the output terminal of described control selector switch is all connected in the control end of described the first multiplexed selector switch, described the second multiplexed selector switch, described the 3rd multiplexed selector switch and described the 4th multiplexed selector switch.
The configurable extendible streamline multiply accumulating device of above-mentioned one, wherein, described totalizer is a totalizer, and four input ends of described totalizer are electrically connected with the output terminal of described the first multiplexed selector switch, described the second multiplexed selector switch, described the 3rd multiplexed selector switch and described the 4th multiplexed selector switch respectively.
The configurable extendible streamline multiply accumulating device of above-mentioned one, wherein, described multiple output register is two output registers, the carry output terminal of the input end of the first output register and described totalizer is electrically connected, the result output terminal of the input end of the second output register and described totalizer is electrically connected, the output terminal of described the first output register is also electrically connected at the 3rd input end of described the 3rd multiplexed selector switch, and the output terminal of described the second output register is also electrically connected at the 3rd input end of described the 4th multiplexed selector switch.
Technique scheme tool has the following advantages or beneficial effect:
The configurable extendible streamline multiply accumulating device of one provided by the invention, in structural design, increase and control selector switch, thereby can make this configurable extendible streamline multiply accumulating device can be according to user's application requirements, take advantage of by taking different configuration mode to realize, take advantage of add, the calculation function such as multiply accumulating, thereby realize the calculation function of different bit wides; Meanwhile, in structural design, increase multiple registers, realized inner cascade and flowing structure, thereby overcome multiply accumulating device arithmetic speed of the prior art and the lower problem of efficiency; In addition, in whole project organization, adopt the electric connection of feedback signal, can realize multiple configurable extendible streamline multiply accumulating devices and carry out cascade, thereby realize efficiently parallel accumulating operation, can meet the application demand of Large Volume Data, high speed signal processing; And this structural design compactness, thereby overcome, multiply accumulating device structural design of the prior art is comparatively complicated causes the problem that cost is larger; So configurable extendible streamline multiply accumulating device provided by the invention on the one hand structural design is comparatively compact, on the other hand, arithmetic speed and efficiency improve greatly, and expansion flexibly, realize user configurable.
Brief description of the drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, the present invention and feature thereof, profile and advantage will become more apparent.In whole accompanying drawings, identical mark is indicated identical part.Deliberately proportionally do not draw accompanying drawing, focus on illustrating purport of the present invention.
The structural design drawing of the configurable extendible streamline multiply accumulating device that Fig. 1 provides for the embodiment of the present invention 1;
The rough schematic view of the configurable extendible streamline multiply accumulating device that Fig. 2 provides for the embodiment of the present invention 1;
Structural representation after the configurable extendible streamline multiply accumulating device of the application cascade that Fig. 3 provides for the embodiment of the present invention 1.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is further illustrated, but not as limiting to the invention.
Embodiment 1:
The structural design drawing of the configurable extendible streamline multiply accumulating device that Fig. 1 provides for the embodiment of the present invention 1; As shown in the figure, the configurable extendible streamline multiply accumulating device that the embodiment of the present invention 1 provides comprises: four input registers, for depositing the data of input, wherein, the input end of the first input register Reg11, the second input register Reg12 and the 4th input register Reg14 is electrically connected with the first digital input end D1, the second digital input end D2 and the 3rd digital input end D3 respectively, and the input end of the 3rd input register Reg13 and carry input CARRYIN are electrically connected;
A multiplier MULT, the output terminal of the input end of this multiplier MULT and the first input register Reg11 and the second input register Reg12 is electrically connected, and this multiplier MULT is for carrying out multiply operation to the data of the first input register Reg11 and the second input register Reg12;
Two partial product registers, the input end of first partial product register Reg21 and second partial product register Reg22 is all electrically connected with the output terminal of multiplier MULT, the output data of these two partial product registers for depositing multiplier;
Four multiplexed selector switchs, the output terminal of the first input end of the first multiplexed selector switch MUX1 and first partial product register Reg21 is electrically connected, the output terminal of the first input end of the second multiplexed selector switch MUX2 and second partial product register Reg22 is electrically connected, the output terminal of the first input end of the 3rd multiplexed selector switch MUX3 and the 3rd input register Reg13 is electrically connected, the output terminal of the first input end of the 4th multiplexed selector switch MUX4 and the 4th input register Reg14 is electrically connected, simultaneously, the first multiplexed selector switch MUX1, the second multiplexed selector switch MUX2, the second input end of the 3rd multiplexed selector switch MUX3 and the 4th multiplexed selector switch MUX4 is all configured to " 0 " input, the effect of multiplexed selector switch be to select its fan-in factor according in one as its output,
A control selector switch SEL, the output terminal of controlling selector switch SEL is all connected in the control end of the first multiplexed selector switch MUX1, the second multiplexed selector switch MUX2, the 3rd multiplexed selector switch MUX3 and the 4th multiplexed selector switch MUX4, selects of four multiplexed selector switchs for controlling;
A totalizer ADDER, four input ends of totalizer ADDER are electrically connected with the output terminal of the first multiplexed selector switch MUX1, the second multiplexed selector switch MUX2, the 3rd multiplexed selector switch MUX3 and the 4th multiplexed selector switch MUX4 respectively, for carrying out add operation;
Two output registers, for depositing the data after add operation, wherein, the carry output terminal CARRYOUT of the input end of the first output register Reg31 and totalizer ADDER is electrically connected, the result output terminal Q of the input end of the second output register Reg32 and totalizer ADDER is electrically connected, the output terminal of the first output register Reg31 is also electrically connected at the 3rd input end of the 3rd multiplexed selector switch MUX3, and the output terminal of the second output register Reg32 is also electrically connected at the 3rd input end of the 4th multiplexed selector switch MUX4.
This configurable extendible streamline multiply accumulating device can be according to application demand, can realize the calculation function of different bit wides, as: D1 bit wide is that " X ", D2 bit wide are that " Y ", D3 bit wide are " X+Y ", Output rusults Q bit wide is " Z ", and Z≤X+Y, can realize the structure that " X " bit wide and " Y " bit wide are taken advantage of, obtain the Output rusults of " Z " bit wide.
In the structure of this configurable extendible streamline multiply accumulating device, contain input register, partial product register, output register, can realize the flowing water of three grades, can improve arithmetic speed and efficiency.
This configurable extendible streamline multiply accumulating device is configured and is selected different SEL value by user, can realize calculation function flexibly, and it is as shown in the table that user configures the calculation function of SEL value and realization.
The rough schematic view of the configurable extendible streamline multiply accumulating device that Fig. 2 provides for the embodiment of the present invention 1; As shown in the figure, this configurable extendible streamline multiply accumulating device can simplified schematic be input D1, D2, D3, SEL, CARRYIN, output Q, CARRYOUT.
Structural representation after the configurable extendible streamline multiply accumulating device of the application cascade that Fig. 3 provides for the embodiment of the present invention 1; As shown in the figure, multiple configurable extendible streamline multiply accumulating devices carry out cascade, can expand and realize efficiently parallel multiply accumulating computing, and calculation function is:
in this cascade structure, SEL selects " 111111 ", and first order CARRYIN is " 0 ", and D3 is " 0 ", D1, the input of D2 connection data; Q is connected with the D3 of next stage, and CARRYOUT is connected with the CARRYIN of next stage; The bit wide of D1 is " X ", and the bit wide of D2 is " Y ", and the bit wide of Q is " Z ", and progression that can expansion cascading is " j ", and j≤Z-X-Y.
In sum, the configurable extendible streamline multiply accumulating device of one that the embodiment of the present invention 1 provides, in structural design, increase and control selector switch, thereby can make this configurable extendible streamline multiply accumulating device can be according to user's application requirements, take advantage of by taking different configuration mode to realize, take advantage of add, the calculation function such as multiply accumulating, thereby realize the calculation function of different bit wides; Meanwhile, in structural design, increase multiple registers, realized inner cascade and flowing structure, thereby overcome multiply accumulating device arithmetic speed of the prior art and the lower problem of efficiency; In addition, in whole project organization, adopt the electric connection of feedback signal, can realize multiple configurable extendible streamline multiply accumulating devices and carry out cascade, thereby realize efficiently parallel accumulating operation, can meet the application demand of Large Volume Data, high speed signal processing; And this structural design compactness, thereby overcome, multiply accumulating device structural design of the prior art is comparatively complicated causes the problem that cost is larger; So configurable extendible streamline multiply accumulating device provided by the invention on the one hand structural design is comparatively compact, on the other hand, arithmetic speed and efficiency improve greatly, and expansion flexibly, realize user configurable.
It should be appreciated by those skilled in the art that those skilled in the art can realize described variation example in conjunction with prior art and above-described embodiment, do not repeat them here.Such variation example does not affect flesh and blood of the present invention, does not repeat them here.
Above preferred embodiment of the present invention is described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and the equipment of wherein not describing in detail to the greatest extent and structure are construed as to be implemented with the common mode in this area; Any those of ordinary skill in the art, make many possible variations and modification not departing from technical solution of the present invention, or are revised as the equivalent embodiment of equivalent variations, and this does not affect flesh and blood of the present invention.Therefore, every content that does not depart from technical solution of the present invention,, all still belongs in the scope of technical solution of the present invention protection any simple modification made for any of the above embodiments, equivalent variations and modification according to technical spirit of the present invention.
Claims (8)
1. a configurable extendible streamline multiply accumulating device, is characterized in that, comprising:
Multiple input registers, it is configured to deposit the data of input;
Multiplier, it is configured to the data in multiple described registers to carry out multiply operation;
Multiple partial product registers, it is configured to deposit the output data of described multiplier;
Multiple multiplexed selector switchs, it is configured to select data of its input to export as it;
Control selector switch, it is configured to control one that selects in described multiple multiplexed selector switchs;
Totalizer, it is configured to the output of described multiple multiplexed selector switchs to carry out add operation;
Multiple output registers, it is configured to deposit the output data after described add operation.
2. the configurable extendible streamline multiply accumulating device of one as claimed in claim 1, it is characterized in that, described multiple input register is four input registers, the input end of the first input register, the second input register and the 4th input register is electrically connected with the first digital input end, the second digital input end and the 3rd digital input end respectively, and the input end of the 3rd input register and carry input are electrically connected.
3. the configurable extendible streamline multiply accumulating device of one as claimed in claim 2, it is characterized in that, described multiplier is a multiplier, and the output terminal of the input end of described multiplier and described the first input register and described the second input register is electrically connected.
4. the configurable extendible streamline multiply accumulating device of one as claimed in claim 3, it is characterized in that, described multiple partial product register is two partial product registers, and the input end of first partial product register and second partial product register is all electrically connected with the output terminal of described multiplier.
5. the configurable extendible streamline multiply accumulating device of one as claimed in claim 4, it is characterized in that, described multiple multiplexed selector switch is four multiplexed selector switchs, the output terminal of the first input end of the first multiplexed selector switch and described first partial product register is electrically connected, the output terminal of the first input end of the second multiplexed selector switch and described second partial product register is electrically connected, the output terminal of the first input end of the 3rd multiplexed selector switch and described the 3rd input register is electrically connected, the output terminal of the first input end of the 4th multiplexed selector switch and described the 4th input register is electrically connected, simultaneously, described the first multiplexed selector switch, described the second multiplexed selector switch, the second input end of described the 3rd multiplexed selector switch and described the 4th multiplexed selector switch is all configured to " 0 " input.
6. the configurable extendible streamline multiply accumulating device of one as claimed in claim 5, it is characterized in that, described control selector switch is a control selector switch, and the output terminal of described control selector switch is all connected in the control end of described the first multiplexed selector switch, described the second multiplexed selector switch, described the 3rd multiplexed selector switch and described the 4th multiplexed selector switch.
7. the configurable extendible streamline multiply accumulating device of one as claimed in claim 6, it is characterized in that, described totalizer is a totalizer, and four input ends of described totalizer are electrically connected with the output terminal of described the first multiplexed selector switch, described the second multiplexed selector switch, described the 3rd multiplexed selector switch and described the 4th multiplexed selector switch respectively.
8. the configurable extendible streamline multiply accumulating device of one as claimed in claim 7, it is characterized in that, described multiple output register is two output registers, the carry output terminal of the input end of the first output register and described totalizer is electrically connected, the result output terminal of the input end of the second output register and described totalizer is electrically connected, the output terminal of described the first output register is also electrically connected at the 3rd input end of described the 3rd multiplexed selector switch, the output terminal of described the second output register is also electrically connected at the 3rd input end of described the 4th multiplexed selector switch.
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