Bus Transfer Device for Semiconductor Read Data Efficiency
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Solution Overview
Problem
Existing bus transfer devices in semiconductor systems are inefficient as they do not fully utilize the bus width for data transfers of small bit widths, leading to suboptimal transfer efficiency, even when the bus width is expanded.
Innovation Solution
A semiconductor device with a bus transfer device that can simultaneously transfer read data of varying bit widths and corresponding transaction identification information through a unified read data transfer path, allowing for efficient data transfer by optimizing the use of bus resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the bus width is expanded to improve transfer capacity, then the bus can handle larger data widths, but the transfer efficiency for small bit width data does not increase because the bus width used for data transfer does not change
Solution Approach 1:
The bus transfer device segments the data transfer process by separating small bit width data from large bit width data. Multiple small data packets are individually identified and can be transferred separately or combined, allowing the bus to efficiently utilize its width for both small and large data transfers without waste
Solution Approach 2:
The invention merges multiple small bit width data packets into a unified transfer when their total width fits within the bus capacity. The bus transfer device can combine several small data items with their identification information into a single efficient bus transaction, maximizing bus utilization while maintaining data integrity
2Productivity
If the bus transfer device uses the whole bus width for burst transfer, then high occupancy of the bus is achieved, but small bit width data cannot utilize the expanded bus width effectively
Solution Approach 1:
The bus transfer device dynamically adjusts the transfer strategy based on data characteristics. For burst transfers, it uses the full bus width to maximize occupancy. For small data items, it flexibly combines multiple items or transfers them individually, adapting the bus utilization to match the actual data requirements
Solution Approach 2:
The invention changes the transfer parameters (such as data width, number of transactions, and combination strategy) based on the characteristics of the data being transferred. This allows the system to optimize bus occupancy for different data scenarios, maintaining high efficiency whether transferring large contiguous blocks or multiple small items
Data Source
AI summary
The disclosed invention improves the transfer efficiency of a bus transfer device. A semiconductor device includes a bus transfer device including a read data transfer path which can transfer read data having an n-bit width at a maximum. If first read data and second read data corresponding respectively to a first transaction and a second transaction have a total bit width of n bits or less, the bus transfer device can simultaneously transfer data obtained by unifying the first read data and the second read data, first transaction identification information, and second transaction identification information through the read data transfer path.