A low power consumption voltage island division method for system on chip
A system-on-chip and voltage island technology, applied in the field of automatic design, can solve the problem that the quality of the solution cannot be greatly improved, and achieve the effect of reducing the cost of power network resources, reducing design costs, and enriching automatic design optimization methods.
Active Publication Date: 2015-08-19
NINGBO UNIV
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AI Technical Summary
Problems solved by technology
There are some rectangular voltage island division technologies, but strictly restricting the shape of the voltage island to a rectangle makes the quality of the solution unable to be greatly improved, so there is still a lot of room for improvement in SoC power consumption
Method used
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Embodiment Construction
[0026] The present invention will be further described in detail below in conjunction with the examples of the drawings.
[0027] Table I
[0028] Numbering
Area
Legal working voltage set
1
16318
1.0,1.3,1.5
2
24045
1.0,1.3,1.5
3
7137
1.2,1.5
4
19038
1.0,1.3,1.5
5
18928
1.3,1.5
6
26832
1.2,1.5
7
13284
1.1,1.3,1.5
8
42065
1.1,1.3,1.5
9
29336
1.2,1.3,1.5
10
24696
1.2,1.3,1.5
[0029] Use the n10 in the MCNC of the international benchmark circuit example as an example to divide the voltage island. Table 1 shows the information of each module in n10. figure 1 Shown is a layout representation of n10 (the layout generation algorithm does not belong to the content of this patent application, so it will not be described in detail). According to the corresponding positional relationship, it can be constructed as figure 2 As shown in the binary tree, the number represents the module number,'H' or'V' is the operator,...
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The invention discloses a low-power-consumption voltage island diving method for a system on a chip. The low-power-consumption voltage island driving method has the advantages that the restrain that a voltage island has to be rectangular is removed, a plurality of adjacent voltage islands working under the same voltage are bonded together through steps of voltage island searching, adjacent judging of the voltage islands and the like based on the existing rectangular voltage island generation technology, finally a non-rectangular voltage island larger in area is formed, and accordingly, power consumption is reduced. Compared with the traditional voltage island dividing method of the system on the chip, the low-power-consumption voltage island diving method reduces power consumption of the system on the chip with low power grid resource consumption. Therefore, the automatic design optimization method for voltage island dividing of the system on the chip is richened, and design cost is reduced. According to verification of examples, the voltage islands obtained through the low-power-consumption voltage island diving method can effectively reduce power consumption of the system on the chip.
Description
Technical field [0001] The invention relates to an automated design method of a system on a chip, in particular to a method for dividing a low power consumption voltage island of a system on a chip. Background technique [0002] With the large number of applications of handheld electronic devices such as smart phones and tablet computers, low power consumption is becoming an important indicator of System-on-a-Chip (SoC) design. The main sources of power consumption are divided into dynamic power consumption and static power consumption, and both have the most direct relationship with the supply voltage. Therefore, reducing the supply voltage is the most effective and direct low-power technology. Multi-SupplyVoltage (MSV) technology assigns higher voltages to modules on the critical path, and lower voltages to modules on the non-critical path, thereby greatly reducing power without affecting performance. Consumption. [0003] However, MSV technology brings challenges to the syste...
Claims
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IPC IPC(8): G06F1/32
Inventor 夏银水储著飞王伦耀
Owner NINGBO UNIV