PXH842 User’s Guide –
Dolphin Interconnect Solutions
Page 5
PXH842 high level specification
The PXH842 is a PCI Express Gen3 x16 Transparent Host and Target card for PCIe IO expansion applications. Dolphin offers various
configurations of this board to support various installations of FireFly modules. The standard product is a dual x8 configuration that
supports a x16 or dual x8 configurations.
Product variants
The card can be ordered with different FireFly optical engines mounted depending on your use case and requirements:
SKU / Model
#FireFly
Config
PXH842
2 x8
Transp x16 / 2 x8
PXH845
4 x4
Transp x16 / 2 x8 / 4 x4
PXH846
1 x8
Transp x8
PXH847
2 x4
Transp x8 / 2 x4
PXH848
1 x4
Transp x4
The PXH842 supports PCIe Gen1, Gen2 and Gen3 speeds and x4, x8 and x16 link-widths. The card will operate at the highest
common speed shared between the slot and the card (Gen3) and the widest common link-width (x16).
•
PCI Express Base Specification, Rev. 3.0.
•
PCI Express CEM Specification, Rev. 3.0.
•
PCI Express Gen3 8.0 GT/s per lane signaling
–
128 GT/s total signaling.
•
PCI Express Gen3 x16 edge connector. The card installs in any PCI Express slot that has a physical x16
connector. The slot may have any electrical width x1
–
x16.
•
Compliant with PCI Express Gen1 through Gen3 computers and IO systems, auto detection.
•
MTP cable connector
•
PXH842 card variants supports connecting to 1
–
4 target devices
•
Transparent Cable port configurations, up to
o
One x16
o
Two x8
o
Four x4 (Supported using PXH846 only)
•
Broadcom / Avago / PLX PEX8733 PCI Express Gen3 chipset.
•
132 nanosecond cut-through latency port to port.
•
Support for active optical fibers up to 100 meters.
•
Low profile, Half length - PCI Express Electromechanical Specification, Rev 2.0.
•
Dimensions 167.8mm x 68.9 mm
•
Comes with both low profile and standard profile PCI Express bracket.
•
Host clock isolation. Automatic support for host running CFC or SSC mode.
•
VAUX powered board management controllers for flexible configuration and cable management.
•
EEPROM recovery option.
•
PCI Express power domain isolation.
•
Power consumption (preliminary):
o
12 Volt: Max 18 Watt, typical 14 Watts with 4 FireFlys attached.
o
Port power (per cable port): 3.3 Volt +/- 5%, 0.6 A
•
Operating Temperature: 0°C - 55°C (32°F - 131°F), Air Flow: 150 LFM
•
Operating Temperature with AOC: 0°C - 45°C (32°F - 113°F), Air Flow: 150 LFM
•
Operating Temperature: 0°C - 50°C (32°F - 122°F), Air Flow: ~0 LFM
•
Relative Humidity: 5% - 95% (non- condensing)
•
CE
•
Compliant to EN-55022 (2010), EN 55024 (2010), Class A.
•
RoHS
•
FCC Class A.
•
WEEE