The Dolphin Express PXH820 and PXH824 XMC Adapters brings up to 128 GT/S connectivity and advanced connection features to embedded computers and carrier cards that support XMC mezzanine cards. The cards provide external connectivity with a Quad SFF-8644 connector that supports standard MiniSAS-HD or PCIe 3.0 cables.
The PXH820 XMC 1.0 and PXH824 XMC 2.0 x16 Gen3 PCIe XMC adapters expand the capabilities of embedded systems by enabling very low latency, high throughput cabled connections using standard PCI Express over cable. The PXH820/PXH824’s x16 front panel I/O SFF-8644 connector presents a standard interface for point to point or switched connections using the 24 port PCI Express MXS824 switch between systems.
The adapter cards quad SFF-8644 cable connector supports the new PCI SIG External Cabling Specification 3.0 for connections to compliant Dolphin and third party PCIe cabled systems. PCs and expansion chassis connections are achieved using Dolphin’s PXH830 PCI Express host adapter and standard cables. More information on cables for the PXH820/PXH824.
The PXH820 and PXH824 comes with Dolphin’s comprehensive PCIe NTB eXpressWare software suite that reduces time to market for customers. eXpressWare software includes several protocals to support connecting systems, SOCs, FPGAs, and GPUs. The Shared-Memory Cluster Interconnect (SISCI) API is a robust and powerful programming environment for easy use of shared memory in multi host/root systems. The optimized TCP/IP driver and SuperSockets™ for Linux and Windows removes the traditional networking bottleneck and enables standard applications to take advantage of the high performance PCI Express interconnect. Shared memory applications can easily benefit from 0.54 microsecond remote memory latency and more than 13 Gigabytes/s throughput. Sockets applications benefits from a 1 microseconds remote application latency. These powerful features make the adapter an ideal interconnect for applications such as military and industrial systems that seek high performance and flexibility.
In NTB mode, the adapter offers remote PIO and Remote Direct Memory Access (RDMA) for high performance system to system communication. Data transfers are conducted through either Direct Memory Access (DMA) for larger packet sizes and processor off-load or Programmed IO (PIO) for small packets at the lowest latency. The combination of DMA and PIO creates an optimal data transfer solution.
The PXH820 and PXH824 also supports system clock isolation, by isolating the system clock. Users benefit from improved signal quality, reliability, and cable distances. For custom configurations, the card also includes a DIP switch to select between several configuration options. Any mix of PXH820, PXH824 and PXH830 cards can be used with the MXS824 switch to create up to 60 node clusters for general use and reflective memory systems.
In transparent mode, the PXH822 / PXH826 XMC adapter can be configured as either an upstream or downstream device supporting transparent and non-transparent bridging.
The PXH820 comes with Vita 42 XMC 1.0 connectors suitable for PCI Express Gen1 and 2. This will also work well in some PCIe Gen3 environments. The XMC connector provides 12 mm stacking height when assembled on a carrier/CPU board configured for 10 mm stacking heights. A proprietary bezel design allows this configuration to work without modifications to the front panel. Contact Dolphin for additional 3D CAD data.
The PXH824 adapter card is available with VITA 61.0 connectors compliant to the XMC 2.0 standard. These cards must be installed on VPX cards with minimum 12.0 mm XMC 2.0 connectors.
Please note that the XMC 1.0 and 2.0 is not mechanically compatible. Carefully check your carrier card specification before placing the order and contact Dolphin for clarifications. Dolphin also offer the PXH822 VITA 1.0 and PXH826 VITA 2.0 adapters for traditional transparent operations.
NTB + Transparent
Vita 42 / XMC 1.0
NTB + Transparent
Vita 61 / XMC 2.0
The XMC card is also prepared for READ-IO. Please contact Dolphin for specifications, variants and ordering information. The PXH820 and PXH824 cards are bundled with the Dolphin eXpressWare software. If you only need a transparent connection, please purchase the PXH822 or PXH826 XMC adapters.