Bus encoding and decoding device and method thereof

Abstract

The invention relates to a bus encoding and decoding device and a method thereof. The bus encoding and decoding device forecasts and hits an instruction address bus, an encoding rear bus output by the encoding and decoding device can keep unchanged during a lot of execution time, meanwhile, the power consumption for sequential instruction executing, unchanged instruction keeping and instruction jumping on the instruction address bus can be effectively reduced, and therefore the bus power consumption of a cycle program can be reduced.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a bus encoding and decoding device and method thereof. Background technique [0002] With the rapid development of integrated circuit technology, the operating frequency and integration of embedded processor chips have been greatly improved, resulting in increasingly prominent power consumption problems. A large amount of energy consumption can shorten the operating time of the battery in portable equipment, and it can cause many problems for the cooling and reliability of the processor. The bus connecting the various sub-modules of the processor usually has a large load capacitance and is accessed frequently, which is one of the main sources of processor power consumption. Therefore, effectively reducing bus power consumption is of great significance to the design of low-power embedded processors. [0003] In the prior art, a T0 bus encoding proposed in the article "Asymptot...

AI Technical Summary

Problems solved by technology

Although the ALBORZ bus encoding method can reduce the power consumption when the instruction address bus jumps to a certain extent, it cannot fundamentally avoid the power consumption when the instruction address bus jumps, because the optimized LWC(d) still has jumps. Change

In the ALBORZ bus encoding method, in order to reduce the power consumption when the instruction address bus jumps, it is necessary to add a codebook memory, but this increases the area and complexity of the design, and also increases the power consumption

Images