One Stop Systems
OSS-PCIe-HIB35x4 | 15
1.15 x4 Cable Signal Descriptions
PIN
#
Signal
Description
A1
GND
Ground reference for PCI Express transmitter Lanes
A2
PETp0
Differential PCI Express transmitter Lane 0 5
A3
PETn0
Differential PCI Express transmitter Lane 0 5
A4
GND
GND Ground reference for PCI Express transmitter Lanes
A5
PETp1
Differential PCI Express transmitter Lane 1 5
A6
PETn1
Differential PCI Express transmitter Lane 1
A7
GND
Ground reference for PCI Express transmitter Lanes
A8
PETp2
Differential PCI Express transmitter Lane 2
A9
PETn2
Differential PCI Express transmitter Lane 2
A10
GND
Ground reference for PCI Express transmitter Lanes
A11
PETp3
Differential PCI Express transmitter Lane 3
A12
PETn3
Differential PCI Express transmitter Lane 3
A13
GND
Ground reference for PCI Express transmitter Lanes
A14
Differential 100MHz cable reference clock
A15
CREFCLK
Differential 100MHz cable reference clock
A16
GND
GND Ground reference for cable reference clock
A17
SB_RTN
Signal return for single ended sideband signals
A18
CPRSNT#
Used for detection of whether a cable is installed and the downstream subsystem is powered
A19
CPWRON
Turns power on / off to slave-type downstream subsystems
B1
GND
Ground reference for PCI Express receiver Lanes
B2
PERp0
Differential PCI Express receiver Lane 0
B3
PERn0
Differential PCI Express receiver Lane 0
B4
GND
Ground reference for PCI Express receiver Lanes
B5
PERp1
Differential PCI Express receiver Lane 1
B6
PERn1
Differential PCI Express receiver Lane 1
B7
GND
Ground reference for PCI Express receiver Lanes
B8
PERp2
Differential PCI Express receiver Lane 2
B9
PERn2
Differential PCI Express receiver Lane 2
B10
GND
Ground reference for PCI Express receiver Lanes
B11
PERp3
Differential PCI Express receiver Lane 3
B12
PERn3
Differential PCI Express receiver Lane 3
B13
GND
Ground reference for PCI Express receiver Lanes
B14
PWR
+3.3VCable power
B15
PWR
+3.3VCable Power
B16
PWR RTN
Cable power return
B17
PWR RTN
Cable power return
B18
CWAKE#
Power management signal for wakeup events (optional)
B19
CPERST#
Cable PERST#
PETp(x)
PCI Express Transmit Positive signal of (x) pair.
PETn(x)
PCI Express Transmit Negative signal of (x) pair.
PERp(x)
PCI Express Receive Positive signal of (x) pair.
PERn(x)
PCI Express Receive Negative signal of (x) pair.
/-
Cable REFerence CLocK: Provides a reference clock from the host system to the remote system.
SB_RTN
Return path for single ended signals from remote systems.
CPRSNT#
Cable Present: Indicates the presence of a device beyond the cable.
PWR
Power: Provides local power for in-cable redriver circuits. Only needed on long cables (Power does not go across the
cable.)
PWR_RTN
Po
Provides local power return path for PWR pins.
CWAKE#
Cable WAKE
CPERST#
Cable PCI Express Reset