Interleaved Register Mapping for Serial RF Control
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Solution Overview
Problem
Existing serial data communication systems face challenges in efficiently mapping register addresses in RF circuits, particularly in managing multiple digitally controllable elements across a serial bus.
Innovation Solution
The implementation of an interleaved register address map across multiple digitally controllable elements, allowing sequential data on a serial interface to write to registers in different elements in an interleaved sequence, thereby logically organizing registers into banks for efficient control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional non-interleaved register mapping is used in serial communication systems, then the control of multiple digitally controllable elements is simpler to implement, but the efficiency of register access and overall system productivity deteriorates due to sequential access requirements
Solution Approach 1:
The patent applies segmentation by dividing the register address space into multiple banks (e.g., Bank 0, Bank 1, Bank 2, Bank 3) that can be independently accessed. Each bank contains a subset of registers for different digitally controllable elements. This segmentation allows the system to organize registers in a way that enables parallel access patterns through interleaved mapping, where even-addressed banks and odd-addressed banks can be accessed alternately without conflict, thereby improving register access efficiency while maintaining manageable complexity through structured organization.
2Ease of operation
If multiple digitally controllable elements are connected in parallel to a serial interface, then the ease of operation improves, but the difficulty of detecting and measuring register addresses increases due to address mapping conflicts
Solution Approach 1:
The patent introduces an intermediary mechanism in the form of a bank select signal and interleaved address mapping scheme that mediates between the simple parallel connection of multiple digitally controllable elements and the complex address mapping requirements. The bank select signal acts as an intermediary control that directs serial data to the appropriate bank based on the least significant bit of the register address. This intermediary layer simplifies the physical connection (all elements connected to same serial interface) while systematically resolving address mapping conflicts through deterministic bank selection logic.
3Loss of time
If sequential data is written to registers in a non-interleaved manner, then the device complexity is reduced, but the loss of time increases due to inability to parallelize access operations
Solution Approach 1:
The patent implements periodic action through interleaved register mapping where access to different banks follows a periodic pattern based on the least significant bit of the register address. Even-addressed registers map to even banks (Bank 0, Bank 2) while odd-addressed registers map to odd banks (Bank 1, Bank 3). This periodic alternating access pattern enables time-division multiplexing of the serial interface, allowing the system to efficiently sequence through multiple banks without data conflicts, thereby reducing control operation time while maintaining a systematic address map structure that manages complexity through regularity.
Data Source
AI summary
Digitally controllable elements capable of influencing operation of a power amplifier module are coupled in parallel to a serial data interface. Each digitally controllable element includes address control logic that decodes an address presented on the serial data interface as well as a device specific ID. In response to the decoding, physical registers in different digitally controllable elements are written in an interleaved order according to an interleaved register address map. Banks of registers within the digitally controllable elements may be select to influence or modify operation of the power amplifier module.