Embedded Programmable Logic Core Enhancements for System Bus Interfaces
Bibliographic record
Abstract
Programmable logic cores (PLCs) offer a means of providing post-fabrication re-configurability to a SoC design. Circuits implemented in a PLC will inevitably have lower timing performance and logic density than fixed function circuits. This fundamental mismatch makes the design of the interface between the PLC and the rest of the SoC a challenging problem. In this paper we focus on interfaces between circuits implemented in PLCs and SoC system busses. We demonstrate problems with existing implementation options and then propose modifications to parts of the PLC architecture to enable more efficient system bus interfaces. Our results show that, on average, this modified architecture improves interface timing by 36.4%, reduces CLB usage by 7.9% and improves routability by 28.8% for circuits that require system bus interfaces. We show that the area overhead is less than 0.5% for circuits that do not require bus interfaces.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".