Interface IP
PCIe 6.0 Controller
The PCI Express® (PCIe®) 6.0 Controller is configurable and scalable controller IP designed for ASIC implementation. The controller supports the PCIe 6.0 specification, including 64 GT/s data rates, PAM4 signaling, FLIT mode, and L0p power state. The PCIe 6.0 architecture will be essential for SoC designers creating next-generation chips that require the movement of large amounts of data within systems, including applications like HPC, cloud computing, artificial intelligence/machine learning (AI/ML), enterprise storage, networking, and automotive.
The PCIe 6.0 Controller can be combined with the Rambus PCIe 6.0 PHY to make a complete PCIe 6.0 interface subsystem.
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PCIe Controller 6.0How the PCIe 6.0 Controller Works
The PCIe 6.0 controller is backward compatible to the PCIe 5.0, 4.0 and 3.1/3.0 specifications. It supports version 6.x of the PHY Interface for PCI Express (PIPE) specification. The controller exposes a highly efficient transmit (Tx) and receive (Rx) interface with configurable bus widths. Designed to satisfy a multitude of customer and industry use cases, the IP can be configured to support endpoint, root port, switch port, and dual-mode topologies, allowing for a variety of use models. The provided Graphical User Interface (GUI) Wizard allows designers to tailor the IP to their exact requirements, by enabling, disabling, and adjusting a vast array of parameters.
The PCIe 6.0 controller is built on a flexible architecture that supports a variety of use cases that can be tailored to unique customer needs.
The Rambus PCIe 6.0 Controller and Rambus PCIe 6.0 PHY together comprise a complete PCIe 6.0 Interface Subsystem.
Data Center Evolution: The Leap to 64 GT/s Signaling with PCI Express 6.0
The PCIe interface is the critical backbone that moves data at high bandwidth and low latency between various compute nodes such as CPUs, GPUs, FPGAs, and workload-specific accelerators. With the torrid rise in bandwidth demands of advanced workloads such as AI/ML training, PCIe 6.0 jumps signaling to 64 GT/s with some of the biggest changes yet in the standard.
Solution Offerings
PCI Express layer
- Designed to the latest PCI Express 6.0 (64 GT/s), 5.0 (32 GT/s), 4.0 (16 GT/s), 3.1/3.0 (8 GT/s), and PIPE 6.x (8, 16, 32, 64 and 128-bit) specifications
- Supports SerDes Architecture PIPE 10b/20b/40b/80b width
- Supports original PIPE 8b/16b/32b/64b/128b width
- Compliant with PCI-SIG Single-Root I/O Virtualization (SR-IOV) Specification
- Supports multiple virtual channels (VCs) in FLIT and non-FLIT modes
- Supports Endpoint, Root-Port, Dual-mode, Switch port configurations
- Supports PCIe 6.0 to PCIe 1.0 speeds
- Supports Forward Error Correction (FEC) – Lightweight algorithm for low latency
- Supports L0p Low Power mode
- Up to 4-bit parity protection for data path
- Supports Clock Gating and Power Gating
- RAS features include LTSSM timers override, ACK/NAK/Replay/UpdateFC timers override, unscrambled PIPE interface access, error injection on Rx and Tx paths, recovery detailed status and much more, allowing for safe and reliable deployment of IP in mission-critical SoCs
User Interface layer
- Native 256/512/1024-bit Tx/Rx interface
- User-selectable Transaction/Application Layer clock frequency
- Sideband signaling for PCIe configuration access, internal status monitoring, debug, and more
- Optional Transaction Layer bypass
Integrity and Data Encryption (IDE) – Optional
- Implements the PCI Express IDE ECN
- Configurable IDE engine
- Configurable data bus for PCIe IDE
- Configurable pipeline stages for difference process nodes for best cost and performance balance
- Supports containment and skid modes
- Supports multi-stream
- Utilizes high-performance AES-GCM for encryption, decryption, authentication
- PCIe IDE TLP aggregation for 1, 2, 4, 8 TLPs
- PCIe IDE automatic IDE prefix insertion and detection
- PCIe IDE automatic IDE sync/fail message generation
- PCRC calculation & validation
- Efficient key control/refresh
- Bypass mode
Unique Features & Capabilities
- Internal data path size automatically scales up or down based on max. link speed and width for reduced gate count and optimal throughput
- Dynamically adjustable application layer frequency down to 8 Mhz for increased power savings
- Optional MSI/MSI-X register remapping to memory for reduced gate count when SR-IOV is implemented
- Configurable pipelining enables full speed operation on Intel and Xilinx FPGA, full support for production FPGA designs (when supported)
- Ultra-low Transmit and Receive latency (excl. PHY)
- Smart buffer management on receive side (Rx Stream) allows implementation of custom credit management schemes in the application logic
- Merged Replay and Transmit buffer enables lower memory footprint
- Advanced Reliability, Availability, Serviceability (RAS) features include LTSSM timers override, ACK/NAK/Replay/UpdateFC timers override, unscrambled PIPE interface access, error injection on Rx and Tx paths, recovery detailed status and much more, allowing for safe and reliable deployment of IP in mission-critical SoCs
- Optional Transaction Layer bypass allows for customer specific transaction layer and application layer
- Optional QuickBoot mode allows for up to 4x faster link training, cutting system-level simulation time by 20%
IP files
- Verilog RTL source code
- Libraries for functional simulation
- Configuration assistant GUI (Wizard)
Documentation
- IP Reference Manual
- Getting Started Guide
PCI Express Bus Functional Model
- Encrypted Simulation libraries
Reference Designs
- Synthesizable Verilog RTL source code
- Simulation environment and test scripts
- Synthesis project & DC constraint files (ASIC)
- Synthesis project & constraint files for supported FPGA hardware platforms (FPGA)
Advanced Design Integration Services:
- Integration of commercial and proprietary PCIe PHY IP
- Development and validation of custom PCIe PCS layer
- Customization of the Controller IP to add customer-specific features
- Generation of custom reference designs
- Generation of custom verification environments
- Design/architecture review and consulting
Data Center Evolution: Accelerating Computing with PCI Express 5.0
The PCI Express® (PCIe) interface is the critical backbone that moves data at high bandwidth between various compute nodes such as CPUs, GPUs, FPGAs, and workload-specific accelerators. The rise of cloud-based computing and hyperscale data centers, along with high-bandwidth applications like artificial intelligence (AI) and machine learning (ML), require the new level of performance of PCI Express 5.0.
