MXP924
User’s Guide –
Dolphin Interconnect Solutions
Page 7
PCIe Wake
The MXP924 supports PCIe Wake functionality. To utilize this functionality, you need to set the PXH924 DIP-SW2-2 / Enable Wake
to ON position and use PCIe 4.0 cables to connect to the MXH932. PCIe Wake must also be enabled in the System BIOS.
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.
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 MXP924 is designed to support both long and short PCIe copper cables as well as PCIe active optical cables (AOC).
The MXP924 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 MXP924 module will transmit a CMI Reset
message downstream. The module can be connected to a MXP924 in Target mode or any PCIe device compliant to the new cable
standard.
CMI Functionality
The MXP924 BMC firmware release 2.4 and newer supports the following CMI operations when used with PCIe 4.0 cables:
•
Publishes card and CMI status information in readable memory map
•
Supports sending and receiving CMI reset, wake and power status messages
•
Supports receiving indicators (LED/messages).
Active Optical PCIe Cables (AOC)
Dolphin offers active optical PCIe fiber cables up to 100 meters for the MXP924 module. CWAKE and CPOWERON is not supported
using standard PCIe AOC cables.
