DIGITAL LOGIC
8-to-3 Priority Encoder
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CASE ANALYSIS
Scenario
An 8-to-3 priority encoder generates a 3-bit code representing the highest-priority active input among eight lines, along with a valid signal indicating any active input.
Key decisions
- Abstracted individual input lines into a single bus D[7:0] for clarity.
- Used separate signals for the 3-bit output Y[2:0] and the Valid flag to highlight distinct functions.
- Applied generic role to the encoder block to keep the focus on data flow rather than internal gates.
When to reuse this
Use this pattern when integrating a priority encoder as a functional unit in system-level block diagrams, such as interrupt controllers or resource arbiters.
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blockdiagram-8-to-3-priority-encoder