OSS OSS-PCIe-HIB38-x16 User manual

PCIe x16 Gen3 iPass Cable Adapter
Model: OSS-PCIe-HIB38-x16
www.onestopsystems.com
PCIe x16 Gen3 iPass Cable Adapter
SKU: OSS-PCIe-HIB38-x16

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Table of Contents
Preface 3
Advisories 3
Safety Instructions 4
1 Introduction 6
1.1 Specifications 6
1.2 Block Diagram 7
1.3 Overview 7
1.4 Dimension 8
1.5 LEDs 8
1.6 PCIe PLX PEX8733 Switch 8
1.7 Power 8
1.8 PCIe Cable Sideband signals 9
1.9 Block Diagrams (Use Cases) 9
1.10 Pin Assignments 11
1.11 Pin-out for the Gen3 PCIe x16 Card Edge Connector 11
2 Hardware & Software Requirements 12
2.1 Hardware 12
2.2 Software 13
2.3 Tools Required for Installation 13
3 Installation Procedures 14
3.1 Configure Dipswitches 14
3.1.2 Set 1st HIB to Target Mode 14
3.1.3 Set 2nd HIB to Host Mode 14
3.2 Install HIB Host card 15
3.3 Install HIB Target card 16
3.4 Connect the x16 iPass Cable 17
3.4.1 Disconnecting the cable 18
4 Software Installation 19
5 Verify Hardware 20
5.1 Bracket LED Status indicators 20
6Troubleshooting 21
7How to Get More Help 22
7.1 Contacting Technical Support 22
7.2 Returning Merchandise 22
7.3 Online Support Resources 22

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Preface
Advisories
Five types of advisories are used throughout this manual to provide helpful information, or to alert you to the potential for hardware damage
or personal injury.
NOTE
Used to amplify or explain a comment related to procedural steps or text.
IMPORTANT
Used to indicate an important piece of information or special “tip” to help you
CAUTION
Used to indicate and prevent the following procedure or step from causing damage to the equipment.
WARNING
Used to indicate and prevent the following step from causing injury.
DANGER or STOP
Used to indicate and prevent the following step from causing serious injury or significant data loss
Disclaimer: We have attempted to identify most situations that may pose a danger, warning, or caution condition in this manual. However, the
company does not claim to have covered all situations that might require the use of a Caution, Warning, or Danger indicator.

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Safety Instructions
Always use caution when servicing any electrical component. Before handling the expansion chassis, read the following instructions and safety
guidelines to prevent damage to the product and to ensure your own personal safety. Refer to the “Advisories” section for advisory
conventions used in this manual, including the distinction between Danger, Warning, Caution, Important, and Note.
Always use caution when handling/operating the computer. Only qualified, experienced, authorized electronics personnel should
access the interior of the computer and expansion chassis per UL and IEC 60950-1
The power supplies produce high voltages and energy hazards, which can cause bodily harm.
Use extreme caution when installing or removing components. Refer to the installation instructions in this manual for precautions
and procedures. If you have any questions, please contact Technical Support.
WARNING
Never modify or remove the radio frequency interference shielding from your workstation or expansion unit. To do so may
cause your installation to produce emissions that could interfere with other electronic equipment in the area of your
system.
When Working Inside a Computer
1. Before taking covers off a computer, perform the following steps:
2. Turn off the computer and any peripheral devices.
3. Disconnect the computer and peripheral power cords from their AC outlets or inlets in order to prevent electric shock or system
board damage.
In addition, take note of these safety guidelines when appropriate:
To help avoid possible damage to systems boards, wait five seconds after turning off the computer before removing a component,
removing a system board, or disconnecting a peripheral device from the computer.
When you disconnect a cable, pull on its connector or on its strain-relief loop, not on the cable itself. Some cables have a connector
with locking tabs. If you are disconnecting this type of cable, press in on the locking tabs before disconnecting the cable. As you pull
connectors apart, keep them evenly aligned to avoid bending any connector pins. Also, before connecting a cable, make sure both
connectors are correctly oriented and aligned.
CAUTION
Do not attempt to service the system yourself except as explained in this manual. Follow installation
instructions closely.

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Protecting Against Electrostatic Discharge
Electrostatic Discharge (ESD) Warning
Electrostatic Discharge (ESD) is the enemy of semiconductor devices. You should always take precautions to eliminate any
electrostatic charge from your body and clothing before touching any semiconductor device or card by using an
electrostatic wrist strap and/or rubber mat.
Static electricity can harm system boards. Perform service at an ESD workstation and follow proper ESD procedures to reduce the risk of
damage to components. We strongly encourage you to follow proper ESD procedures, which can include wrist straps and smocks, when
servicing equipment.
You can also take the following steps to prevent damage from electrostatic discharge (ESD):
When unpacking a static-sensitive component from its shipping carton, do not remove the component’s anti-static packaging
material until you are ready to install the component in a computer. Just before unwrapping the anti-static packaging, be sure you
are at an ESD workstation or are grounded.
When transporting a sensitive component, first place it in an anti-static container or packaging.
Handle all sensitive components at an ESD workstation. If possible, use anti-static floor pads and workbench pads.
Handle components and boards with care. Do not touch the components or contacts on a board. Hold a board by its edges or by its
metal mounting bracket.

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1 Introduction
PCIe x16 Gen 3 switch-based cable adapter install easily into a computer's PCIe slot. A PCIe cable can then be plugged into the adapter to
extend the PCIe bus from the motherboard to an external device, like an expansion enclosure or storage device. The PCIe x16 Gen 3 adapter
extends the PCIe bus at 120Gb/s with extremely low latency because there is no conversion software.
Part numbers:
OSS-PCIe-HIB38-x16-H (Host Adapter)
oOSS-PCIe-HIB38-x16-H-F (Host Adapter, Full Height bracket)
oOSS-PCIe-HIB38-x16-H-H (Host Adapter, Half Height bracket)
OSS-PCIe-HIB38-x16-T (Target Adapter)
oOSS-PCIe-HIB38-x16-T-F (Target Adapter, Full Height)
oOSS-PCIe-HIB38-x16-T-H (Target Adapter, Half Height)
1.1 Specifications
Item
Description
Form Factor
PCIe x16 half-height, half-length
Dimensions
5.85 x 2.34” (14.85 x 5.94 cm) | Weight: 2 lb
Bandwidth / Backplane
Interface
PCIe x16 Gen3
Power Consumption
15 W
Connector
PCIe x16 Cable connector
PCIe x16 Edge connector
PCIe Switch
PLX PEX8733
8.0 GTs 32-Lane PCIe Gen 3 Switch
DMA Controller
SSC Isolation
Bracket
Standard and low profile brackets available
Two LEDs on bracket: Upstream link status and Downstream link status
Operating Temperature
0˚C to +70˚C environment
Operating Humidity
10% to 90% relative humidity non-condensing
Storage Humidity
5% to 95% relative humidity non-condensing
PCB
PCI Express add-in card standard
PCIe x16 cable
PCB thickness .063 +/-0.008 inch (1.6 +/- 0.2mm)
Mounting holes for face plate
Industry Specifications
PCIe External Cabling Specification, Rev. 1.0
PCI Express™ Card Electromechanical
Specification, Rev. 3.0
PCI Express ® Base Specification, Rev. 3.0
ATX Specification, Version 2.2
Agency Compliance
• FCC Class A
• CE
• RoHS
Operating System
Windows 10, Windows Server 2012 R2; Linux OS based

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1.2 Block Diagram
1.3 Overview

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1.4 Dimension
1.5 LEDs
Green is power on and CPLD programmed. If either power LED is off, a power supply has failed or the CPLD has not been
programmed.
One green link status LED per PCIe interface (Lane_good 0 and 8 from PEX8733)
Link status indicators located at the bracket show the basic status of the two possible links. It does not indicate the width of the link
(eg: x16, x8, x4, etc), but the link speed and status is shown as follows:
PCIe Link Status
LED Pattern
No Link
Off
Link is up at Gen1
Slow blink
Link is up at Gen2
Fast blink
Link is up at Gen 3 speed
On (solid)
1.6 PCIe PLX PEX8733 Switch
32-Lane PCIe Gen 3 Multi-Root switch with DMA and downward compatibility
1.7 Power
Power is provided by the PCI-e card slot.
Power required by internal components of OSS-PCIe-HIB-38-x16 is estimated to be 15 watts when both 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 supplied to the PCIe cable interface is limited to 0.75A @ 3.3V per the PCIe cable specification

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1.8 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.
1.9 Block Diagrams (Use Cases)
Block diagrams for all operating modes.
1. Mode 1: Target Mode: In this mode, the PCI-e cable is attached to an upstream host system, and the card edge supports a
downstream target device. Note that the PEX8733’s upstream port is set to 8 by the mode 1 eeprom. The upstream system
provides a copy of its SSC, and the on-board buffer provides a copy to the downstream target as well as the PEX8733’s core logic.

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2. Mode 2: Host Mode. In this mode, the PCI-e cable is connected to a downstream (target) or the cable port of a Mode 0 OSS-PCIe-
HIB-38-x16, while the card edge interface is installed in an upstream host system. The host system’s SSC is used to provide the
PEX8733 core logic clock as well as the cable’s reference clock.
This document employs the following abbreviations:
HIB - Host Interface Board
PCIe - PCI Express
SSC - Spread Spectrum Clock
CFC –Constant Frequency Clock
n/c - not connected
NT –Non-Transparent

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1.10 Pin Assignments
Connectors Gen3 PCIe x16 Card Edge Connector
The pins are numbered as shown with side A on the top of the centerline on the solder side of the board and side B on the bottom of
the centerline on the component side of the board.
The PCIe interface pins PETpx, PETnx, PERpx, and PERnx are named with the following convention: “PE” stands for PCIe high speed,
“T” for Transmitter, “R” for Receiver, “p” for positive (+), and “n” for negative (-).
Note that adjacent differential pairs are separated by two ground pins to manage the connector crosstalk
1.11 Pin-out for the Gen3 PCIe x16 Card Edge Connector
PIN#
SIDE B
SIDE A
Name
Description
Name
Description
1
N/C
Not Connected
PRSNT1#
Hot-Plug presence detect
2
N/C
Not Connected
N/C
Not Connected
3
N/C
Not Connected
N/C
Not Connected
4
GND
Ground
GND
Ground
5
N/C
Not Connected
N/C
Not Connected
6
N/C
Not Connected
JTAG3
TDI (Test Data Input)
7
GND
Ground
JTAG4
TDO (Test Data Output)
8
+3.3V
3.3V power
N/C
Not Connected
9
N/C
Not Connected
N/C
Not Connected
10
3.3Vaux
3.3V auxiliary power
+3.3V
3.3V power
11
N/C
Not Connected
PERST#
Fundamental Reset
MECHANICAL KEY
12
RSVD
Reserved
GND
Ground
13
GND
Ground
REFCLK+
Reference Clock (Differental Pair)
14
PETp0
Transmitter differential pair, Lane 0
REFCLK
15
PETn0
GND
Ground
16
GND
Ground
PERp0
Receiver Differential Pair, Lane 0
17
PRSNT2#
Hot-Plug presence detect
PERn0
18
GND
Ground
GND
Ground
19
PETp1
Transmitter differential pair, Lane 1
RSVD
Reserved
20
PETn1
GND
Ground
21
GND
Ground
PERp1
Receiver Differential Pair, Lane 1
22
GND
Ground
PERn1
23
PETp2
Transmitter differential pair, Lane 2
GND
Ground
24
PETn2
GND
Ground
25
GND
Ground
PERp2
Receiver Differential Pair, Lane 2
26
GND
Ground
PERn2
27
PETp3
Transmitter differential pair, Lane 3
GND
Ground
28
PETn3
GND
Ground
29
GND
Ground
PERp3
Receiver Differential Pair, Lane 3
30
RSVD
Reserved
PERn3
31
PRSNT2#
Hot-Plug presence detect
GND
Ground
32
GND
Ground
RSVD
Reserved
Signal Descriptions
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
CREFCLK+/-
Cable Reference Clock: Provides a reference clock from the host systems to the remote systems
SB_RTN
Side Band ReTurn: 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
PoWer ReTurn: Provides local power return path for PWR pins.
CWAKE#
Cable Wake
CPERST#
Cable PCi Express Reset

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2 Hardware & Software Requirements
2.1 Hardware
1. OSS-370, QTY 2: The HIB card works in pair, one Host card and one Target card.
2. One x16 iPass cable
Use x16 iPass cable for connecting host card and target card
3. OSS Expansion chassis or OSS expansion board / backplane x16 Gen 3
You need an expansion chassis with Gen3 backplane . Photos below are example of Gen3 OSS backplanes and an expansion unit. The HIB
card has custom pinout unique to OSS and only OSS Target adapters will work in the upstream slot of our expansion backplanes.
4. Host computer / workstation
Use a motherboard that has a Gen3 x16 PCIe slot in order for the card to operate to its max performance. The Host adapter card is
recommended to be installed in a x16 connector.
5. ATX Power Supply and Power Cord(s)

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2.2 Software
OSS-370 boar card requires no driver or software on Windows based OS and Linux.
2.3 Tools Required for Installation
To complete the installation of the OSS product you will need a Phillips-head screwdriver and ESD wrist strap to prevent electrostatic discharge.

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3 Installation Procedures
Host adapter (aka: HIB - Host Interface Board)
The host adapter (aka: Host Interface card) is installed into the host computer’s PCIe x16 slot. The host cable adapter (Part # OSS-PCIe-HIB38-
x16-H) allows communication between a processor and an I/O point.
Target adapter (aka: Target Card, Expansion Interface Card)
The target card(Part# OSS-PCIe-HIB38-x16-T) fits into an OSS custom slot backplane and extends the PCIe bus to a single add-in board via a PCIe
x16 cable. The “Target Card” can only be installed in a designated “Upstream slot” on OSS expansion backplane.
The following steps will guide you through the installation of your OSS-370 Host and Target cards
3.1 Configure Dipswitches
Prior to using the HIB card, it needs to set the Dipswitch to appropriate operating mode. There are two standard modes, Host mode and Target
mode.
3.1.2 Set 1st HIB to Target Mode
Configure HIB to Target mode by the dipswitches to their corresponding setting, see photo below
3.1.3 Set 2nd HIB to Host Mode
Configure the 2nd HIB card to Host mode, see dipswitches settings below.

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3.2 Install HIB Host card
Install the Host Interface card. Begin the installation by first powering down your computer. Remove the power cord. 5VSB (5V Standby) is still
available, if the power cord is still installed . Use the procedures for shutting down your operating system and shutting off power to your
computer provided in your owner’s manual or system documentation. The PCIe host card is a “half-height,” x16-capable PCIe card mounted to
a “full-height” bracket as shown below.
For low profile case applications, change the mounting bracket to the low profile bracket. You can order a low profile bracket by contacting our
Sales Support. Replacing the “High Profile Bracket” with “Low Profile Bracket” is done by removing the screws that hold the card to the
bracket. Detach the standard bracket from the card, and place the low profile bracket and secure it. Use proper ESD procedures when
completing this action.
Install the host card in the computer. Plug in the host card in the x16 Gen3 PCIe slot. Secure the card.

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3.3 Install HIB Target card
Install the Target card in OSS expansion backplane. Plug-in the target card in the designated Upstream slot of the backplane. The HIB Target
card will only work in the OSS backplane designated Upstream slot. Below photos are example of Gen3 OSS expansion backplanes showing
where the location of the Upstream slot.

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3.4 Connect the x16 iPass Cable
Use a x16-to-x16 iPass cable. Attach the cable by pulling back on the retractor ring or by pressing / pushing the metal tab. Make sure to align
the keyed slot with the connector key ridge on the slot cover. Insert the cable connector into the connector shell on the board until the
connector teeth snap securely into the holes in the cable shell. See photos below.
Connect cable to Host adapter card, which is installed in the computer.

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Connect the other end of the cable to the Target card, which is installed in the OSS expansion chassis, see photos below
3.4.1 Disconnecting the cable
To remove the cable, pull down the green plastic tab or push the metal tab and slowly pull the cable out

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4 Software Installation
Install the appropriate software / driver for the M.2 device. OSS does not provide the driver / software for the M.2 device. This can be obtained
or downloaded from the manufacturer’s website.
When done installing the driver, reboot the host computer.

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5 Verify Hardware
After the system is powered up, check the LINK LEDs on both Host and Target cards. Make sure you have a solid green LEDs on CBL and EDG. If
only one LED is lit, this is an indication that you are not getting a good link between host and expansion unit. If this occurs, the host computer
will not be detecting or recognizing your PCIe cards in the expansion unit.
5.1 Bracket LED Status indicators
Off - Link is down; no PCIe card installed
Slow blink - Link is up at Gen1 (1Hz)
Fast blink - Link is up at Gen2 (2Hz)
On (solid) - Link is up at Gen 3 speed
Multiple LEDs and Dip switches make debugging and troubleshooting easy. Visible CBL and EGDE LEDs show PCIe link STATUS that each PCIe
Interface card is operating properly. Other LED for “ Power Good -PWRGD" is useful visual indicator for troubleshooting and verifying the
connections. A Gen3 LINK between host and targets card will show two Solid Green LEDs on the back of the card (CBL and EDG).
1. CBL LED shows the link status between the host card in the host computer and the target card in the expansion chassis.
2. EDGE LED shows:
a. HOST card –connection between host card and host system.
b. TARGET card –connection between the switch on the target card and the switch in the expansion chassis
2. PWRGD LED shows electrical power is present