MXP924
User’s Guide –
Dolphin Interconnect Solutions
Page 6
MXP924 High Level Specification
The MXP924 is PXIe system switch module and support a PCIe uplink to a standard PC for PXIe software control. The PC must use a
compliant MXH932 card. Up to two MXP924 can be connected to a single MXH932. The MXP924 also support daisy chaining PXIe
Chassis. The MXP924 supports PCIe Gen1, Gen2, Gen3 and Gen4 speeds and x1, x2, x4, x8 and x16 link-widths. The module will
operate at the highest common speed shared between the slot and the card (Gen4) and the widest common link-width (x16).
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PCI Express Base Specification, Rev. 4.0
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PCI Express External Cabling specification 4.0 (draft)
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PCI Express Gen4 16.0 GT/s per lane signaling
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256 GT/s total signaling.
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PCI Express Gen4 x16 edge connector.
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Compliant with PCI Express Gen1 through Gen4 computers and IO systems, auto detection
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The MXP924 supports transparent connections to IO systems (Host and Target operation)
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Quad SFF-8644 cable connector
o
Durability max total 250 mating cycles
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Microchip Switchtec PM40052 PFX PCI Express Gen4 chipset
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100 nanosecond cut-through latency port to port.
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Support for PCIe Wake functionality.
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Automatic Thermal Shutdown to avoid hardware damages (can be disabled)
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Support for PCIe 4.0 SFF-8644 copper cables.
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Support for active optical PCIe complaint fibers (AOC)
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Single System Slot 3U PXI Express, compliant to PXI -5 PXI Express Hardware Specification rev 1.1
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SRNS clocking, Prepared for SRIS clocking
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VAUX powered board management controllers for flexible configuration and cable management
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Flash recovery option. PFX Multi configuration support
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Relative Humidity: 5% - 95% (non- condensing)
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CE and FCC markings
Packaging
The MXP924 product is delivered in a retail box includes the following components.
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MXP924 module
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Anti-static bag
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Getting started guide
PXIe System Switch Slot
The MXP924 must be placed in the PXIe system switch slot. The MXP924 supports PCIe Gen1, Gen2, Gen3 and Gen4 speeds. The
default PXIe backplane configuration is x16 + x8. The module will auto configure to the slot speed and width.
MXP924 Configuration
The MXP924 cable ports can either be configured as a single x4 / x8 / x16 PCIe target for connecting to a MXH932 configured for
host opeation or in daisy-chanin mode for connecting x4 / x8 to the host and a single x4 / x8 to a downstream MXP924.
The default DIP switch setting is transparent target x4 / x8 / x16 operations.
Thermal Shutdown
The MXP924 module includes an overtemperature overheat protection. The BMC will automatically shut down the MXP924 if a
PCIe switch temperature beyond 105°C (221°F) is detected. Similar, if an AOC is plugged in, the MXP924 module will automatically
shut down if the max operating temperature announced by the connected AOC is reached. Please consult the AOC data sheet for
details.
NOTE:
The MXP924 link LEDs will start flashing yellow when a PCIe switch temperature of 95°C (203°F) is reached or when the AOC
reports a temperature 5°C (41°F) lower than the max operating temperature.
NOTE:
The automatic shutdown can be disabled by setting DIP switch SW2-4. Prior to disabling the automatic shutdown, please
ensure you have established proper airflow.
