Reusable INIT IP Block FSM for Hardware Initialization
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Solution Overview
Problem
Existing hardware initialization procedures are inflexible, resource-intensive, and difficult to debug, as they are device-specific and lack support for varying initialization modes such as power-up, low power state entry, and exit.
Innovation Solution
A reusable hardware initialization (INIT) IP block that employs a finite state machine (FSM) and an input-output (IO) modifier to transition between receive and transmit states, allowing for adaptive and scalable initialization procedures by using a definition table to correlate FSM states with inputs and outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If custom fixed logic or microprocessors are used for hardware initialization, then flexibility and reusability are improved, but area, time, and manufacturing cost increase significantly
Solution Approach 1:
The INIT block is designed as a universal initialization engine that can handle multiple initialization modes (power-up, low power state entry, exit) and support various IP blocks through a standardized interface. The finite state machine and definition table architecture enables a single reusable component to perform diverse initialization functions without requiring custom logic for each case.
Solution Approach 2:
The system uses parameterizable initialization procedures where the behavior of the INIT block is controlled by changing parameters in the definition table and control registers rather than modifying the hardware architecture. This allows the same hardware structure to adapt to different initialization scenarios by simply changing software-controlled parameters.
2Ease of manufacture
If device-specific fixed logic is used for initialization, then manufacturing cost is reduced, but adaptability to different initialization modes and devices is lost
Solution Approach 1:
The INIT block serves as a universal initialization engine that can handle multiple initialization modes (power-up, low power state entry, exit) and support various IP blocks through a standardized interface. The finite state machine and definition table architecture enables a single reusable component to perform diverse initialization functions without requiring custom logic for each case.
Solution Approach 2:
The initialization procedure is made dynamic through the use of a finite state machine that can transition between different states based on initialization mode and progress. The system adapts its behavior dynamically by changing the active initialization procedure and parameter values during runtime, allowing a single hardware structure to handle multiple scenarios.
3Reliability
If conventional initialization procedures are used, then device-specific requirements are met, but debugging complexity and error correction time increase
Solution Approach 1:
The INIT block incorporates feedback mechanisms where the finite state machine monitors the progress and status of initialization procedures. The system can detect errors during initialization and respond by transitioning to error handling states, providing structured feedback for debugging and reducing the complexity of troubleshooting initialization failures.
Solution Approach 2:
The system performs preliminary actions by pre-defining initialization procedures and parameter sequences in the definition table before actual initialization occurs. This structured approach establishes a known-good initialization path that can be followed and debugged systematically, reducing complexity compared to ad-hoc initialization sequences.
Data Source
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AI summary
A method for initializing components of an electronic device includes receiving an input signal at an initialization block; after receiving the input signal, changing a state of a finite state machine (FSM) of the initialization block; sending an initialization signal from the initialization block to a component on a chip; after sending the initialization signal, changing the state of the FSM; receiving a return signal from the component with the initialization block; and after receiving the return signal, changing the state of the FSM