GAL16V8 OLMC composition Within a GAL16V8 device, which of the following <em>is not</em> a named functional mux associated with the Output Logic Macrocell (OLMC)?

Introduction / Context:
GAL16V8 devices contain Output Logic Macrocells (OLMCs) that provide options such as registered vs. combinational output, output enable control, inversion, and feedback routing. Understanding the named blocks around the OLMC helps when reading vendor diagrams and timing paths.

Given Data / Assumptions:

• Typical OLMC blocks include an Output MUX (OMUX), Feedback MUX (FMUX), and Tri-State/Output Enable MUX (often shown as TSMUX).
• Naming conventions are consistent in many datasheets, though minor variations exist.
• We identify which acronym is not standard for the OLMC.

Concept / Approach:
The OLMC takes the sum-of-products signal from the OR array and conditions it through selectable elements. The OMUX chooses the data path (for example, registered/combination). The FMUX selects what is fed back to the AND array. The TSMUX (tri-state mux) or equivalent controls output enable behavior. “PSMUX” (product-term select mux) is not a commonly labeled OLMC block; product-term selection is handled in the AND/OR arrays rather than by a named PSMUX within the OLMC.

Step-by-Step Solution:

Verification / Alternative check:
Block diagrams in vendor application notes (for example, GAL16V8) show OMUX/FMUX/TS control but no PSMUX label at the OLMC boundary.

Why Other Options Are Wrong:

• TSMUX: Controls three-state/enable behavior at the output.
• OMUX: Selects between registered/combinatorial or alternate data sources.
• FMUX: Routes feedback from the macrocell back into the logic array.

Common Pitfalls:
Assuming naming uniformity across all vendors; focus on the functional roles, which persist despite minor label differences.

Final Answer:
PSMUX