MXH942 Host and Target Transparent Cable Adapter

PCI Express 4.0 Transparent Host and Target Adapter

The MXH942 Gen4 PCI Express Transparent Host and Target Cable Adapter is our high performance optical interface to external IO subsystems. Based on Microchip PFX Gen 4.0 PCI Express bridging architecture, the MXH942 adapter includes advanced features for transparent operations and clock isolation. The MXH942 card have two MPO connectors and utilizes the new Samtec PCIe 4.0 FireFly® optical engine.


  • x16 PCI Express edge port
  • Two x8/x4 PCIe optical cable ports
  • Total 256 GT/s Throughput
  • 100 ns Cut-Through Latency
  • Low Profile Design
  • PCIe Gen4
  • Dual MTP connectors
  • Samtec FireFly optical engine
  • Host and Target operations
  • Transparent bridging

Product Data

The MXH942 Gen4 PCI Express Host Adapter is our high performance cabled interface to external IO subsystems. Based on Microchip PFX Gen4 PCI Express bridging architecture, the MXH942 Transparent Host and Target adapter includes advanced features for transparent bridging (TB), host and clock isolation. The MXH942 card utilizes the Samtec PCIe 4.0 FireFly® optical engine enabling distances up to 100 meters.

The MXH942 card is a transparent only product. To utilize Dolphin's PCIe clustering software, you need to purchase the MXH940 Gen4 NTB Adapter card.

Variants

The card is available in several variants with reduced number of FireFly optical modules mounted. The maximum performance and supported topologies for these cards will vary. Details can be found in the following table:

MXH94x Transparent Host and Target variants
Part Number Installed FireFly devices Supported PCIe configurations Required MPO Patch Fiber Cable
MXH942 Two x8 x16, Two x8 Two 24 pairs
MXH945 Four x4 x16, xTwo 8, Four x4 Four 12 pairs
MXH946 One x8 x8 One 24 pairs
MXH947 Two x4 x8, Two x4 Two 12 pairs
MXH948 One x4 x4 Four 12 pairs

Fiber MPO Patch Cables

The MXH94x cards are carefully designed for maximum cable length and supports fiber cables up to 100 meter optical cables. The x8 FireFly device configuration requires two MPO female, 24 pairs, OM3 50/125, Key up - Key up (Type C) cables. The x4 FireFly device configuration requires two MPO female, 12 pairs, OM3 50/125, Key up - Key up (Type B) cables.

Features

  • PCI Express® 4.0 compliant - 16.0 GT/s per lane
  • Slot compliant with PCIe Gen 1.0, 2.0, 3.0
  • Samtec PCIe 4.0 FireFly® optical engine
  • MPO connectors
  • Four x4 PCI Express 4.0 cable ports that can be configured as:
    • One - x16 PCI Express port
    • Two - x8 PCI Express ports
    • Four - x4 PCI Express ports
  • Fiber-optic cable connectors
  • Clock isolation support
  • Low profile PCI Express form factor
  • EEPROM for custom system configuration
  • Link status LEDs through face plate
Feature Description
Link Speeds 64 Gbit/s per port, total 256 GTt/s
Cut Through Latency 100 nanoseconds
Active Components Microchip Gen 4.0 PCI Express Switch
PCI Express®

Base Specification 4.0
Card Electromechanical Specification 3.0

Topologies Point to point
Single Host card supports up to 4 downstream targets
Cable Connections Fiber optic cable (AOC) support, up to 100 meters
Power Consumption

TBD

Mechanical Dimensions Low profile, Half Length - 68.90 mm (2.731 inches) x 167.65 mm (6.600 inches)
Operating Environment TBD
Relative Humidity: 5% - 95% (non- condensing)
Storage Environment Storage Temperature: -40°C - 70°C (-40°F - 158°F)
Relative Humidity 95% (non- condensing) at 35°C
Software No special drivers needed for Transparent operation
PCIe bracket Full height plate mounted
Half height plate not included, only available for x8 and x4 configurations.
Configuration DIP-switch
Host / Target
Regulatory (pending) CE Mark
FCC Class A
RoHS compliant
UL94V-0 compliant
Operating Systems All
MXH94x Transparent Host and Target variants
Part Number Installed FireFly devices
MXH942 Two x8
MXH945 Four x4
MXH946 One x8
MXH947 Two x4
MXH948 One x4

The card is currently being qualified for release in Q2-2020. Please contact Dolphin for details.