Identify the device type: A complex programmable logic device built from multiple SPLD/PLD blocks with programmable interconnections is called a ________.

Introduction / Context:
Programmable logic spans from simple SPLDs to large CPLDs and FPGAs. Knowing the architectural composition helps you choose the right device for density, speed, and ease of routing.

Given Data / Assumptions:

• Device consists of several SPLD-like arrays (e.g., AND/OR macrocells).
• There is a programmable interconnect fabric linking these blocks.
• We are not describing a full FPGA fabric of LUTs and rich routing.

Concept / Approach:
A CPLD integrates multiple SPLD-style macrocells into function blocks, then links them via a programmable interconnect matrix. This provides more capacity and better global timing than a single SPLD while preserving nonvolatile, instant-on behavior in many families.

Step-by-Step Solution:

Verification / Alternative check:
Vendor block diagrams (e.g., MAX7000, XC9500) show logic array blocks connected through a central matrix—exactly the CPLD hallmark.

Why Other Options Are Wrong:

• Boundary scan / bed-of-nails: Test methodologies, not logic devices.
• CLB: A functional block inside an FPGA, not the overall device class.
• Structured ASIC: Different category using prefabricated arrays customized by metal layers.

Common Pitfalls:
Confusing CPLDs with small FPGAs; assuming LUT-centric architecture; overlooking nonvolatile configuration and deterministic timing advantages.

Final Answer:
CPLD