VLSI Mentor · Engineering Journal
Engineering ideas worth thinking deeply about
Analysis, engineering reasoning, debugging insights, and technical perspectives across RTL design, verification, protocols, and semiconductor systems.
Protocols
Featured engineering analysis
AXI vs AHB vs APB — Complete AMBA Bus Comparison for RTL & SoC Designers
The definitive engineering reference on AXI vs AHB vs APB: architecture, timing, bursts, arbitration, outstanding transactions, bridges, RTL, verification, and 30+ interview questions.
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- Protocols
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- 42 min read
Latest from the engineering journal
- Protocols
Why APB Still Matters in an AXI World
If AXI is so powerful, why do modern SoCs still contain APB? A working RTL architect's case for the low-power peripheral bus, the AXI-to-APB bridge, and matching each block to the traffic it carries.
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