Logic Array Blocks and Adaptive Logic Modules User Guide: Agilex™ 5 FPGAs and SoCs

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ID 813159
Date 4/01/2024
Public
Document Table of Contents
Document Table of Contents x
1. Agilex™ 5 FPGAs LAB and ALM Overview 2. Hyperflex® Register 3. Agilex™ 5 LAB and ALM Architecture and Features 4. Document Revision History for the Logic Array Blocks and Adaptive Logic Modules User Guide: Agilex™ 5 FPGAs and SoCs
3. Agilex™ 5 LAB and ALM Architecture and Features x
3.1. LAB 3.2. ALM
3.1. LAB x
3.1.1. MLAB 3.1.2. Local and Direct Link Interconnects 3.1.3. Carry Chain Interconnects 3.1.4. LAB Control Signals
3.1.4. LAB Control Signals x
3.1.4.1. Clear Logic Control
3.2. ALM x
3.2.1. ALM Resources 3.2.2. ALM Output 3.2.3. ALM Operating Modes
3.2.3. ALM Operating Modes x
3.2.3.1. Normal Mode 3.2.3.2. Extended LUT Mode 3.2.3.3. Arithmetic Mode
3.2.3.3. Arithmetic Mode x
3.2.3.3.1. Carry Chain
1. Agilex™ 5 FPGAs LAB and ALM Overview
2. Hyperflex® Register
3. Agilex™ 5 LAB and ALM Architecture and Features
4. Document Revision History for the Logic Array Blocks and Adaptive Logic Modules User Guide: Agilex™ 5 FPGAs and SoCs

3.1.3. Carry Chain Interconnects

There is a dedicated carry chain path between the ALMs. Agilex™ 5 FPGAs include an enhanced interconnect structure in LABs for routing carry chains for efficient arithmetic functions. These ALM-to-ALM connections bypass the local interconnect.

The Hyperflex® registers are added to the carry chain to enable flexible retiming across a chain of LABs and the Quartus® Prime Compiler automatically takes advantage of these resources to improve utilization and performance.

Figure 4. Carry Chain Interconnects
Level Two Title