PCI Express® (PCIe®) is a general-purpose serial interconnect suitable for a broad range of applications across communications, data center, enterprise, embedded, test & measurement, military, and other markets. It can be used as a peripheral device interconnect, a chip-to-chip interface, and as a bridge to many other protocol standards.
AMD provides high-performance, low-power integrated blocks for PCI Express as a hardened sub-system in many devices.
AMD also provides PCIe DMA and PCIe bridge hard and soft IP blocks that utilize the integrated block for PCI Express, boards with PCI Express connectors, connectivity kits, reference designs, drivers, and tools to make it easy to implement PCIe-based designs.
Select a device family from below to review the AMD PCIe solution portfolio for that family.
Systems leveraging implementations of the PCI Express® specification are pervasive in data center, communications, and embedded applications. The multiple connectivity options available in the Versal™ architecture directly support users’ needs to focus on their core competency while leveraging advanced standards-based interfaces. The integrated blocks for PCI Express in the Versal architecture offer premium performance levels with ease of use and efficiency over fully soft IP solutions. The Versal architecture integrates five types of integrated blocks for PCI Express:
MDB5, CPM5, PL PCIE5, CPM4, and PL PCIE4, in conjunction with available GTYP and GTY transceivers, enable interface operation at specification-defined data rates. These range from 2.5 GT/s per lane with one lane (Gen1x1) up to their rated maximum link configurations, with some integrated blocks reaching 32 GT/s per lane with 8 lanes (Gen5x8) and 16 GT/s per lane with 16 lanes (Gen4x16).
The table below is a summary of key characteristics of the integrated blocks for PCI Express in the Versal architecture. Refer to the Versal Architecture and Product Data Sheet: Overview (DS950) for additional information on available resources and capabilities based on orderable device, package, and speed grade combinations.
Versal Architecture Integrated Blocks for PCI Express |
|||||
---|---|---|---|---|---|
MDB5 |
CPM5 |
PL PCIE5 |
CPM4 |
PL PCIE4 |
|
Associated Specifications |
PCIe Rev. 5.0 | PCIe Rev. 5.0 | PCIe Rev. 5.0 |
PCIe Rev. 4.0 |
PCIe Rev. 4.0 |
Max PCIe Link Configs |
Gen5x4 2 x Gen5x2 Gen5x2 |
2 x Gen5x8 Gen4x16 2 x Gen4x 8 |
Gen5x4 Gen4x8 Gen3x16 |
Gen4x16 2 x Gen4x8 |
Gen4x8 Gen3x16 |
PCIe Port Type Support |
EP, RP | EP, RP, Switch |
EP, RP, Switch |
EP, RP, Switch |
EP, RP, Switch |
Key PCIe Features |
SR-IOV 8PF / 64VF |
SR-IOV 16PF / 4KVF |
SR-IOV 8PF / 4KVF |
SR-IOV 4PF / 252VF |
SR-IOV 4PF / 252VF |
Integrated DMA/Bridge | Two Bridges, Required Choice of One or Two: Optional HDMA | Choice of One or Two:Optional QDMA/Bridge | - | Choice of One: Optional QDMA/Bridge Optional XDMA/Bridge |
- |
MDB5, CPM5, PL PCIE5, CPM4, and PL PCIE4 can be used at reduced link configurations to optimize product designs for cost, support novel form factors, alleviate board complexity, and shrink power budgets. Additionally, reduced link configurations can support lower programmable logic resource utilization, depending on the nature of any soft IP solutions used to expand the application-level capabilities of these integrated blocks. CPM5, PL PCIE5, CPM4, and PL PCIE4 can be configured as Endpoint (EP), Root Port (RP), and switch port types. See the Versal Adaptive SoC Integrated Block for PCI Express Product Guide (PG343) and Versal Adaptive SoC CPM Mode for PCI Express Product Guide (PG346). MDB5 can be configured as Endpoint (EP) and Root Port (RP) port types and must be used with its integrated DMA/bridge solution.
AMD enables users to focus design investment in their areas of greatest value by delivering pre-verified high-performance DMA/bridge subsystems for the integrated blocks for PCI Express in the Versal architecture. Available DMA/bridge subsystem options include:
For most users, the available DMA/bridge subsystems can provide time-saving infrastructures, enabling high-performance turnkey data movement. See the Versal Adaptive SoC DMA and Bridge Subsystem for PCI Express Product Guide (PG344) and Versal Adaptive SoC CPM DMA and Bridge Mode for PCI Express Product Guide (PG347). For users seeking to attach their own DMA/bridge subsystem—for preserving their driver and application software investment or to customize or optimize functionality using intimate knowledge of the end application—options are available to bypass the DMA/bridge of the CPM5 and CPM4. For ultimate freedom to implement fully custom solutions, AMD also provides a soft IP core PHY for PCI Express through the Vivado Design Suite IP catalog, enabling designers to attach their own controllers for PCI Express to available GTYP and GTY transceivers.
AMD 16 nm UltraScale+™ devices integrate many essential PCI Express® features required for today’s data center, communications, and embedded applications. UltraScale+ devices use three types of integrated blocks: PCIE4, PCIE4C, and PCIE4CE.
The PCIE4 blocks are compliant to PCI Express Base Specification v3.1 and support up to Gen3x16 and can also be configured for lower link width and speeds. The PCIE4 block does not support Gen4 operation.
PCIE4C blocks are compliant to the PCI Express Base Specification v3.1, supporting up to 8.0 GT/s (Gen3) and compatible with PCI Express Base Specification v4.0, supporting up to 16.0 GT/s (Gen4). PCIE4C blocks are also compliant with CCIX Base Specification v1.0 Version 0.9, supporting speeds up to 16.0 GT/s. PCIE4C blocks support up to 16 lanes at Gen3 or up to 8 lanes at Gen4 and can be configured for lower link widths and speeds to conserve resources and power.
PCIE4CE blocks are compliant to the PCI Express Base Specification v4.0 supporting up to 16.0 GT/s (Gen4). PCIE4CE blocks support up to 16 lanes at Gen3 or up to 8 lanes at Gen4 and can be configured for lower link widths and speeds to conserve resources and power. Some devices contain only one revision of integrated block, whereas other devices provide a mix of revisions of integrated blocks.
All integrated blocks for PCIe® in the UltraScale™ architecture can be configured as Endpoint or Root Port. The Root Port can be used to build the basis for a Root Complex to allow custom chip-to-chip communication via the PCI Express protocol and to attach ASSP Endpoint devices, such as Ethernet controllers, Fibre Channel HBAs, or NVMe SSDs, to the FPGA, MPSoC, or RFSoC.
The Integrated Block for PCI Express IP is hardened in silicon and supports:
AMD also offers high-performance DMA and bridge solutions as soft IP:
For ultimate freedom to implement fully custom solutions, AMD also provides a soft IP core PHY for PCI Express, enabling designers to attach their own controllers for PCI Express to available transceivers.
AMD 20 nm UltraScale™ devices integrate many essential PCI Express® features required for today’s data center, communications, and embedded applications.
The Integrated Block for PCI Express IP is hardened in silicon and supports:
AMD also offers high-performance DMA and bridge solutions as soft IP:
*For specific link widths and speeds that are supported, see the appropriate product guide for the desired IP (PG156, PG195, or PG194).
AMD 28 nm 7 series devices integrate many essential PCI Express® features required for today’s data center, communications, and embedded applications.
The Integrated Block for PCI Express IP is hardened in silicon and supports:
AMD also offers high-performance DMA and bridge solutions as soft IP:
*For specific link widths and speeds that are supported, see the appropriate product guide for the desired IP (PG054, PG055, or PG195).