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1.2.7
Signal Descriptions
PETpN/PETnN: PCI Express Transmitter pairs, labeled where N is the Lane number (starting with 0); "p" is the true signal while "n" is the
complement signal.
PERpN/PERnN: PCI Express Receiver pairs, labeled where N is the Lane number (starting with 0); "p" is the true signal while "n" is the
complement signal.
PWR: Power provisioning to the connector backshell is provided to allow for signal conditioning components within the cable assembly. A wire
must not be provided within the cable.
MGTPWR: Power supplied to the connector backshell for cable management components that are needed while the link is not active. This
needs to be active if the Subsystem has power. A wire must not be provided within the cable.
CBLPRSNT#: Cable present detect, an active-low signal pulled-down by the Free-Side when it is inserted into the Fixed-Side Connector. A wire
must not be provided within the cable.
CADDR: This signal is used to configure the Upstream cable management device address. A wire must not be provided within the cable.
CINT#: This signal is asserted by the cable assembly to indicate a need for service via the Cable Management Interface controller. A wire must
not be provided within the cable.
CMISDA: Management interface data line. Used for both initial link setup and sideband 355 messages when used with proper cables.
CMISCL: Management interface clock line. Used for both initial link setup and sideband messages when used with proper cables.
CMICLK: same as CMISCL
CMIDAT: same as CMISDA
GND (Ground): Shield for differential pairs
1.3
Features
1.3.1
Host Interface Board
The HIB is provided with either a standard or low profile PCIe bracket type and has the following features:
•
PCI Express interface that is compatible with the PCI Express Specification, revision 4.0.
•
PCI Express 4.0 compliant x16 host and target interfaces.
•
Compatibility with the PCIe Low Profile standards and PCIe 4.0 CEM standard.
•
Operates at up to 256Gb/s at PCIe Gen4 speeds.
•
No driver required.
•
Uses mini-SAS HD or PCIe SFF-8644 cables.
•
Simplified cabling with a point-to-point, serial architecture.
•
Operates in Host and Target modes.
•
Support PCIe Bifurcation.
One Stop Systems
HIB616x16 (Rev B) |13
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