Multi-Protocol Header Encoding for Dynamic Memory Interfaces
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Solution Overview
Problem
Current communication protocols, such as OSI and TCP/IP, and memory standards like DRAM and Hybrid Memory Cube, are not optimally suited for various memory systems and applications, particularly for processing-in-memory usage, due to fixed standards and lack of functionality for dynamic protocol changes.
Innovation Solution
A multi-protocol header encoding system that allows for dynamic switching between different communication protocols and header formats, enabling flexible encoding and decoding of data packets with layered headers, tailored to specific applications and destinations, using an encoder and decoder system with configurable header blocks and protocol selection logic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed communication protocols and header formats are used, then system compatibility and standardization are achieved, but adaptability to different memory systems and applications is limited
Solution Approach 1:
The header generation system dynamically selects and configures header formats based on the target memory system and application requirements. The encoder receives protocol type indications and automatically generates appropriate headers (e.g., HMC protocol for 3D-stacked memory, DRAM protocol for standard memory devices) without requiring manual configuration or multiple dedicated systems.
Solution Approach 2:
The encoder is designed as a universal header generation system that can handle multiple communication protocols and memory types through a single device. It supports both packet-based protocols (like HMC) and non-packet-based protocols (like DRAM), and can adapt to processing-in-memory applications, thereby eliminating the need for separate dedicated encoders for each protocol type.
2Speed
If protocol-specific header formats are used, then communication reliability for specific applications is improved, but transmission speed and throughput are reduced due to protocol switching overhead
Solution Approach 1:
The system pre-configures header formats and protocol parameters based on the target memory system type before actual data transmission begins. The encoder is designed to quickly switch between pre-defined protocol templates, eliminating the need for runtime protocol negotiation and reducing transmission overhead while maintaining protocol-specific reliability requirements.
3Productivity
If multiple dedicated encoder systems are used for different protocols, then protocol-specific optimization is achieved, but system complexity and power consumption increase
Solution Approach 1:
A single encoder system performs the function of multiple dedicated encoders by dynamically configuring its header generation logic based on the detected protocol type. The encoder includes protocol type detection logic and configurable header generation circuits that can be programmed to match different memory interfaces, thereby consolidating multiple encoder functions into one power-efficient device.
Solution Approach 2:
The patent merges multiple protocol-specific encoder functions into a unified encoder architecture. The encoder combines protocol detection, header format selection, and data encoding operations into a single integrated system, reducing the total number of encoder components needed and lowering overall power consumption while maintaining protocol-specific optimization.
Data Source
AI summary
A communication device includes a data source that generates data for transmission over a bus, and a data encoder that receives and encodes outgoing data. An encoder system receives outgoing data from a data source and stores the outgoing data in a first queue. An encoder encodes outgoing data with a header type that is based upon a header type indication from a controller and stores the encoded data that may be a packet or a data word with at least one layered header in a second queue for transmission. The device is configured to receive at a payload extractor, a packet protocol change command from the controller and to remove the encoded data and to re-encode the data to create a re-encoded data packet and placing the re-encoded data packet in the second queue for transmission.