bridging device for an AHB bus to access an on-chip SRAM

Abstract

The invention discloses a bridging device for an AHB bus to access an on-chip SRAM, and belongs to the field of data high-speed processing in SoC design. The bridging device comprises an AHB-to-commonslave interface unit and a control data storage module; the AHB-to-common slave interface unit converts an AHB signal into a common slave interface signal and is connected with the control data storage module and the SRAM; And the control data storage module registers the control signal and the data signal of the write operation, transmits the control signal and the data signal to the SRAM, and processes the signal read after writing. When the condition of reading after writing occurs; Through the processing of the bridging device, the read operation is preferentially ensured not to be blocked, the data of the write operation and the control signal are temporarily cached in the register, so that the situation that the SRAM is accessed while reading and writing is avoided, and meanwhile, the time sequence efficiency of the system is greatly improved due to the fact that the read data can be timely transmitted to the host.

Description

technical field [0001] The invention relates to the field of high-speed data processing in SoC design, in particular to a bridge device for AHB bus accessing on-chip SRAM. Background technique [0002] System on Chip (SoC, System on Chip), also known as system on chip, as the name implies, integrates a complete system on a single chip. System chips are mainly used in embedded systems, mobile devices, personal computers and other fields. The hardware functional units required for a complete system chip mainly include processor cores, storage devices (Memories), input and output interfaces (Interfaces), IP cores, etc., and sometimes DSP (Digital Signal Processor, digital signal processor) and other A functional unit that implements a special application. SoCs have two notable features: First, in order to complete the functions of the entire system, many functional units are often required, so the scale of hardware is huge, so SoCs often adopt an IP-based design model. Secon...

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Problems solved by technology

Therefore, the disadvantage of this commonly used bridge device is that the read operation initiated by the AHB host will be delayed, which seriously affects the efficiency of the system operation.

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