MXH932
User’s Guide –
Dolphin Interconnect Solutions
Page 7
Packaging
The MXH932 includes the following components.
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MXH932 Adapter Board with full height profile PCIe bracket mounted
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Low profile PCIe bracket
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Anti-static bag
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Getting started guide
Pre-Installation Questions
Certain steps should be taken prior to installing the MXH932. You should determine the following configuration requirements.
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Which PCIe slot and system will the card be installed in?
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Will the board act as a host adapter or target adapter?
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What is the speed and link width of the slot that the card will be installed in?
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What is the operating environment in which the card will be installed?
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What type and length of cables will be used?
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How to establish proper operational conditions, temperature, and airflow.
PCIe Slot Determination
The MXH932 supports PCIe Gen1, Gen2, Gen3 and Gen4 speeds and x1, x2, x4, x8 and x16 link-widths. The slot width and speed
will affect the performance of the card. The card can be physically installed in a x4, x8 or x16 connector. The card will auto
configure to the slot speed and width.
MXH932 Host / Target Configuration
The MXH932 can act as either a host adapter or target adapter. The MXH932 has a DIP switch bank to control these functions. The
DIP switch labeled SW1 can be found close to the upper edge of the board. The main configuration options are host or target
operations . The default DIP switch setting is transparent host x16 operations. Additional settings are target operations, two x8
links, four x4 links, alternativce edge clock routing and quad edge target.
Airflow - Operating Environment
To maximize lifetime for the product and maintain the warranty, please honor the specified operating temperature and make sure
the specified air flow is present. Special care should be considered when the MXH932 is used in office type cabinets in combination
with other high energy consuming PCIe devices, e.g. not active-cooled GPUs:
Operating Temperature: 0°C - 55°C (32°F - 131°F), Airflow: 350 LFM (Preliminary)
Operating Temperature with AOC: TBD
TIP:
After installing the Dolphin eXpressWare board management software, you can use the tool dis_diag to determine the actual
board temperatures.
Cable Connections
The MXH932 is designed to support both long and short PCIe copper cables as well as PCIe active optical cables (AOC).
The MXH930 cable ports are compliant to the SFF-8644 industry specification and supports PCIe cables compliant to the PCIe
External Cabling Specification 4.0. Four x4 cables are needed for full PCIe x16 connectivity.
PCI Express 4.0 Cables
When used with cables compliant to the new PCIe External Cable standard 4.0, the MXH932 card will transmit a CMI Reset message
downstream. The card can be connected to a MXH932 in Target mode or any PCIe device compliant to the new cable standard.
Support for additional CMI messages are being implemented and will be available with the next firmware maintenance release,
please contact Dolphin for details.
Active Optical PCIe Cables (AOC)
Dolphin offers active optical PCIe fiber cables up to 100 meters for the MXH932 cards. Please contact Dolphin for more information
on long distance fiber optic performance and availability. CWAKE and CPOWERON is not supported using standard AOC cables.
