IXH631 NTB Host Adapter

Gen2 MiniSAS HD PCI Express NTB Host Adapter

The IXH631 Gen2 PCI Express Host Adapter is our high performance cabled interface to external processor subsystems. Based on IDT® Gen2 PCI Express bridging architecture, the IXH631 host adapter includes advanced features for non-transparent bridging (NTB) and clock isolation.


  • Two - x8 PCI Express port
  • Four - x4 PCI Express port
  • PIO and DMA / RDMA
  • MiniSAS HD Cables
  • Low Profile Design
  • Quad SFF-8644 cable connector
  • Clock isolation support
  • Copper cable - up to 8 meters
  • Non Transparent Bridging
  • 5.0 Gbps per lane

Product Data

For high performance application developers, the IXH631 host adapter combines 20 Gbit/s or 40 Gbit/s performance with less than one microsecond latency, significantly improving overall inter-system communication. Inter-processor communication benefits from the high throughput and low latency.

The IXH631 performs both Remote Direct Memory Access (RDMA) and Programmed IO (PIO) transfers, effectively supporting both large and small data packets. RDMA transfers result in efficient larger packet transfers and processor off-load. PIO transfers optimize small packet transfers at the lowest latency. The combination of RDMA and PIO creates a highly potent data transfer system.

The IXH631 enables customers to build a 3 node cluster, connected by PCIe x8 links or a 5 node cluster, connected by PCIe x4 links without using a central PCIe switch.

Dolphin’s software suite takes advantage of PCI Express’ RDMA and PIO data transfer scheme. Delivering a complete deployment environment for customized and standardized applications. The suite includes a Shared-Memory Cluster Interconnect (SISCI) API as well as a TCP/IP driver and SuperSockets software. The SISCI API is a robust and powerful shared memory programming environment. The optimized TCP/IP driver and SuperSockets™ software remove traditional networking bottlenecks, allowing standard IP and sockets applications to take advantage of the high performance PCI Express interconnect without modification. The overall framework is designed for rapid development of inter-processor communication systems.

With the implementation of clock isolation, the IXH631’s signal quality is excellent. By isolating the system clock and transmitting an extremely low jitter high quality clock to downstream devices, the IXH631 offers users high signal quality and increased cable distances. Signal quality is essential for applications such as test and measurement equipment, medical equipment, and storage subsystem seeking high performance and data quality.

Feature Description
Link Speed 20 Gbit/s per port
Application Performance 0.74 microsecond latency (application to application)
Active Components IDT® Gen 2 PCI Express Switch
PCI Express Base Specification 2.1
Topologies Mesh Topology
Cable Port Quad SFF-8644
Cable Connections Four x4 MiniSAS HD copper cable
Power Consumption 3,3 Volt - 7 watts
Mechanical Dimensions Low profile - 68.90 mm ( 2.731 inches) x 120 mm (6.600 inches)
Operating Environment Operating Temperature: 0°C - 55°C
Relative Humidity: 5% -(95% non- condensing
Software SuperSockets™ Berkley Sockets API
Microsoft WinSock2/LSP support
SISCI API
TCP/IP Driver
Safe Boot Configuration Mode Two
Regulatory CE Mark
FCC Class A
RoHS
UL94V-0 compliant
Operating System Windows
Linux
VxWorks
RTX