One Stop Systems
OSS-PCIe-HIB38x8-QUAD | 11
1.4
PCIe Card Edge
The PCIe Card edge will be directly routed x8 interface to the PLX Chip
In host mode, the add-in card will accept a clock as an input.
In target mode, the add-in card will drive a clock. It will also provide a reset output and a PS_ON# signal.
1.5 Power
Power is provided by the PCI-e card slot.
Power required by internal components of
OSS-PCIe-HIB-38-x8 -QUAD
is estimated to be 20 watts when all ports are fully linked and
operating in Gen3 mode.
Cable power is to be provided per PCIe cable specification. When an active cable (powered transceiver) is used, additional power is
required from the PCI-e card slot.
Power will be su3.3V, +3.3Vaux through Card Edge.
Some power rails will be derived from the onboard circuitry.
1.6
PCIe Cable Sideband signals
All Cable sideband signals CPERST#, CPWRON, CPRSNT#, CWAKE# to be connected per the PCIe Cable specification.
Additional isolation of signal CE_PWRON# (card edge power control) shall be provided by a physical switch.
This switch allows user to electrically isolate this signal from the card edge connector.
*The target card and expansion unit are powered UP instantly upon turning ON the host computer.
1.7
PLX PEX8749
Integrated DMA Engine (with four DMA channels and internal buffer space)
48 Lane PCIe Switch
PCIe Gen3 (8.0 GT/s)
Spread Spectrum Clock Isolation
1.8
Link LEDS
The LINK status LEDs on the slot cover (bracket) shows that the cards have successfully linked.
OFF – Link is down
ON – Link is UP, 8.0 GT/s
o
Gen3- solid green
o
Gen2 - Blinking frequency: 2Hz
o
Gen1 - Blinking frequency: 1Hz
RED – No link from the Host side or Target side; Fatal error on PCIe switch;
