I2s data dsp short-range storage transmission system and method based on arbitration mechanism

By constructing an autonomous direct storage path between a dedicated hardware bridging module and the DSP's near-field storage, the problem of unpredictable latency in multi-channel I2S data transmission was solved, achieving deterministic, microsecond-level low-latency data transmission, adapting to different application scenarios and improving system efficiency.

CN121880242BActive Publication Date: 2026-05-15JUDI (SHANGHAI) TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610328096.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-03-18
Publication Date
2026-05-15
Estimated Expiration
2046-03-18

AI Technical Summary

Technical Problem

Existing technologies fail to establish deterministic direct storage paths from multiple I2S interfaces to the nearest memory unit of the DSP core, resulting in unpredictable data transmission delays and additional data copying, making it difficult to meet the microsecond-level, predictable end-to-end latency requirements of high-end real-time processing applications.

Method used

By constructing an autonomous direct storage path between a dedicated hardware bridging module and the DSP near-field memory, and combining arbitration mechanisms, autonomous address management, hardware data packaging, and closed-loop synchronous feedback, multi-channel I2S data can be directly written to the DSP near-field memory in an autonomous hardware manner, eliminating the bus arbitration latency and software configuration overhead of the general DMA architecture.

Benefits of technology

It achieves deterministic, microsecond-level low-latency transmission of multi-channel I2S data, improves the system's scenario adaptability and bus transmission efficiency, reduces software overhead, and meets the latency requirements of high-end real-time processing applications.

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Abstract

The application discloses an I2S data DSP short-range storage transmission system and method based on an arbitration mechanism, relates to the technical field of embedded audio and real-time signal processing, and aims to solve the technical problems that the prior art cannot construct a multi-channel I2S to DSP short-range storage hardware autonomous deterministic direct storage path, transmission delay is unpredictable, and software overhead is large. The system comprises an I2S interface, a special hardware bridging module, a DSP containing short-range storage, a system bus and a DSP core. The special hardware bridging module is integrated with components such as FIFO, an arbitrator and an address generation unit, and can autonomously complete data caching, arbitration, address management and direct writing operation. The method comprises five steps of system initialization, hardware autonomous direct storage, hardware precise notification, core direct processing and hardware synchronous feedback. The application realizes hardware autonomous deterministic low-delay transmission of I2S data, reduces software overhead, and has good system adaptability and hardware reusability, and is suitable for various embedded audio and real-time signal processing scenes.
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