OVERVIEW
The Network Interconnect (NIC) is a scalable, high-performance IP designed to connect processors, memory controllers, accelerators, and peripheral subsystems in modern SoCs. Built on a configurable crossbar architecture, it provides low-latency, high-bandwidth, and protocol-compliant communication across heterogeneous interface standards.
The interconnect supports AXI, AHB, APB, and AMBA CHI compliant interfaces, enabling integration of both bus-based and packet-based subsystems within a unified fabric. For CHI, the interconnect provides support for Request, Response, and Data channels and enables connectivity between request nodes (RN), home nodes (HN), and slave nodes (SN) through dedicated CHI ports.
The AXI path supports deterministic transaction traversal with 3-cycle request and 2-cycle response latency, while the CHI path enables packet-based transport with parallel channel processing. The architecture supports cascading with NoC fabrics, allowing scalable expansion to large numbers of interconnected nodes.
Extensive configurability is provided to optimize system integration and performance. Arbitration, QoS, and transaction ordering are configurable to meet application-specific latency and throughput requirements. Register mapping enables flexible address space organization aligned with system software. The internal data width is also configurable, allowing designers to balance bandwidth, power, and silicon area.
Robust system management features include advanced interrupt handling, per-channel watchdog timers for detecting stalled or abnormal transactions, and independent software-controlled reset for each interface, enabling localized fault isolation without impacting the overall system.
To support complex clocking and power environments, each interface operates in an independent clock domain. Register slicing enables efficient clock-domain crossings and improved timing closure, while internal clock gating reduces dynamic power consumption during low activity periods.
Delivered as a fully synthesizable RTL IP optimized for power, performance, and area (PPA), the NIC integrates seamlessly into AMBA-based SoC infrastructures. By combining crossbar scalability, multi-protocol support including CHI, NoC expansion capability, and rich configurability, the NIC provides a production-ready interconnect solution for next-generation embedded and high-performance SoC platforms.
