UCLe
Integrates MAC IP to a broad range of PHY and SerDes IP
Overview
Universal Chiplet Interconnect Express (UCIe) is structured around a three-layer model, which ensures efficient communication and integration of chiplets within a package. Flit aware Die-to-Die interface (FDI) between Protocol layer and Die to Die adapter, Raw Die-to-Die Interface (RDI) between Die-to-Die adapter and Physical layer, and Physical link interface between two dies – for single and multi-module chiplet setups. These layers are designed to provide a comprehensive and standardized approach to inter-chiplet communication, addressing different aspects of the interconnect such as physical connections, data transfer protocols, and logical operations.
Features
Support PCI Express (PCIe 6.0) and Compute Express Link (CXL 2.0, CXL 3.0) protocols.
- Supports CXL 2.0 68B Flit Mode, CXL 256B Flit Mode, PCIe 6.0 Flit Mode and Raw Mode for all protocols.
- Supports streaming protocol for Raw format.
- Support decision table for flit format and protocol in d2d adapter layer.
- Supports multiple stacks/multiple protocols.
- Supports AXI 3 & 4 Protocols using Raw format.
- Supports standard (2D) and Advanced package (2.5D).
- Supports link speeds up to 32GT/s.
- Supports single-module, two-module and four-module configuration.
- Support for power management link states.
- Supports up to 16 Gbps per pin including 4/8/12Gbps.
- Available with 8/16/32 and 64 lanes.
- Support directed and randomised flit generation.
- Support for ARB/MUX, CRC retry, link state management, parameter negotiation, link training, scrambling/descrambling, sideband training transfers, lane repair, lane reversal.
- Support mainband/sideband interfaces and FDI/RDI interfaces.
- Supports Flow control and Retry mechanism.
- Supports runtime Link Testing through Parity, Scrambling/De-scrambling.
- Supports all kinds of side-band messages.
- Supports LTSM, RDI state machine and FDI state machine.
- Supports single and multiple CXL stacks with internal ARB/MUX layer.
- Available with in-built UCIe Retimers.
