Technical Reference Manual

The Open Chiplet Atlas Harness (OCAH) is a chiplet design IP where the non-application-specific functions are integrated to form a chiplet design framework. These non-application-specific functions include common chiplet subsystems within the System Management Unit (SMU): Security Processor (SEP), System Management Controller (SMC), and Debug & Test Ports (DTP). The System Management Network (SMN) and AXI-over-UCIe bridge (AoU) are separate platform components.

This manual is the architecture and register-level reference for those blocks. Motivation, use cases, and the OCA-layer feature overview are on Home.

1. Documentation Overview

This documentation is organized into the following sections:

Documentation Overview
- List of Figures
- List of Tables
OCAH Architecture & Design - Detailed architecture and design documentation
OCAH Platform Components - The subsystems that make up the OCAH platform
- System Management Unit (SMU) - SMU composition, AXI crossbar and child subsystems
- System Management Network (SMN)
- AXI-over-UCIe Bridge (AoU)
IP Reference - Reference documentation for reusable IP blocks
Appendices
- Register Field Access Notation - How to read the Access column of the generated register and field tables
- Referenced Documents - Specifications and external design documentation cited throughout this manual