rtd CNV36JXNX User manual

CNV36JXNX cpu/gpuModules™
User’s Manual
BDM-610000090 Revision A
®
www.rtd.com
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ii
CNV36JXNX cpu/gpuModules™ User’s Manual
RTD Document Number: BDM-610000090 Revision A
Copyright © 2009-2022 RTD Embedded Technologies, Inc.All rights reserved.
Trademarks
AdvancedAnalog I/O, Advanced Digital I/O, aAIO, aDIO, a2DIO, Autonomous SmartCal, “Catch the Express”,
cpuModule, dspFramework, dspModule, expressMate, ExpressPlatform, HiDANplus, “MIL Value for COTS
prices”, multiPort, PlatformBus, and PC/104EZ are trademarks, and “Accessing theAnalog World”, dataModule,
IDAN, HiDAN,RTD, and the RTD logo areregistered trademarks ofRTD EmbeddedTechnologies, Inc (formerly
RealTime Devices, Inc.). PS/2 is a trademark of International Business Machines Inc. PCI, PCI Express, and PCIe
are trademarks of PCI-SIG. PC/104, PC/104-Plus, PCI-104, PCIe/104, PCI/104-Express and 104 are trademarks
of the PC/104 Embedded Consortium. All other trademarks appearing in this document are the property of their
respective owners.
Failure to follow the instructions found in this manual may result in damage to the product described in this
manual, or other components of the system. The procedure set forth in this manual shall only be performed by
persons qualified to service electronic equipment. Contents and specifications within this manual are given
without warranty and are subject to change without notice. RTD Embedded Technologies, Inc. shall not be liable
for errors or omissions in this manual, or for any loss, damage, or injury in connection with the use of this manual.
Revision History
Revision
Date
Reason for Change
A
9/7/2021
Initial release

CNV36JXNX cpu/gpuModules™
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BDM-610000090 Rev A CNV36JXNX User’s Manual iv
Table of Contents
Chapter 1 Introduction........................................................................6
CNV36JXNX cpu/gpuModule.............................................................................................7
CNV36JXNX Model Options................................................................................................9
Cable Kits and Accessories ...................................................................................................9
Board Features....................................................................................................................10
Block Diagram.....................................................................................................................12
Specifications........................................................................................................................13
Physical Characteristics.......................................................................................................13
Power Consumption.............................................................................................................14
Operating Conditions...........................................................................................................14
Electrical Characteristics.......................................................................................................15
Migrating to RTD’s NVIDIA® Jetson Series cpu/gpuModule....................................17
Connector Pinout & Function Differences.........................................................................17
Software Differences.............................................................................................................18
Contact Information ..........................................................................................................19
Chapter 2 Getting Started...................................................................20
Proper Grounding Techniques .........................................................................................20
Selecting the Stack Order for the CNV36JXNX...........................................................20
Connecting to the Stack.....................................................................................................21
Power Input Connections..................................................................................................21
Booting the CNV36JXNX cpu/gpuModule for the First Time....................................21
Chapter 3 Connecting the cpu/gpuModule..................................22
Connector Locations............................................................................................................23
Auxiliary Power (CN3)......................................................................................................26
Utility Port 2.0 Connector (CN5).....................................................................................28
USB 2.0 Connection ............................................................................................................29
System Reset ........................................................................................................................29
Soft Power Button................................................................................................................29
Battery...................................................................................................................................29
DisplayPort Connector (CN4)..........................................................................................30
Serial Port 1 (CN7) and Serial Port 2 (CN8).................................................................32
Serial Port UART.................................................................................................................32
RS-232 Serial Port (Default)...............................................................................................32
RS-422 or RS-485 Serial Port.............................................................................................33
CAN Bus ...............................................................................................................................35
Digital I/O Port (CN6).......................................................................................................36
Ethernet (10/100/1000Base-T and -TX) Connector (CN20)........................................37
MIPI CSI-2 Camera Connectors (CN13, CN23)...............................................................38
PCIe/104 Type 2 Bus (CN1 - Bottom)..............................................................................39
PCIe/104 Type 2 Compatibility...........................................................................................42
PCIe Link Configuration.....................................................................................................42

BDM-610000090 Rev A CNV36JXNX User’s Manual v
Reserved (CN16 and CN12)...............................................................................................42
Chapter 4 Using the cpu/gpuModule..............................................43
Operating System Specific Usage ....................................................................................44
Flashing the OS onto the NVIDIA eMMC............................................................................44
Linux for Tegra®...................................................................................................................44
Digital I/O ............................................................................................................................44
Power Management............................................................................................................45
Power Management...............................................................................................................45
Power Button Modes............................................................................................................45
Low-Power Wake Options...................................................................................................45
AT vs. ATX Power Supplies................................................................................................45
ATX Power Supply Signals.................................................................................................45
Thermal Management.........................................................................................................46
Appendix A Hardware Reference .......................................................47
Jumper Settings and Locations........................................................................................48
Onboard PCI/PCIe Devices..............................................................................................49
Physical Dimensions...........................................................................................................50
Heatsink Dimensions..........................................................................................................51
Flat-Heat Spreader Dimensions..........................................................................................51
Appendix B Troubleshooting ..............................................................53
Common Problems and Solutions....................................................................................54
Troubleshooting a PC/104 System...................................................................................55
How to Obtain Technical Support...................................................................................55
Appendix C IDAN™ Dimensions and Pinout...............................56
IDAN Contents....................................................................................................................57
IDAN Dimensions...............................................................................................................57
IDAN Connectors ...............................................................................................................58
External I/O Connections .................................................................................................60
Appendix D Additional Information................................................63
NVIDIA Driver Information: .............................................................................................63
PC/104 Specifications.........................................................................................................63
Appendix E Limited Warranty ........................................................64

BDM-610000090 Rev A CNV36JXNX User’s Manual 6
Chapter 1 Introduction
This manual provides comprehensive hardware and software information for users developing with the
CNV36JXNX PCIe/104 cpu/gpuModule.
Note Read the specifications beginning on page 13 prior to designing with the
cpu/gpuModule.
This manual is organized as follows:
Chapter 1 Introduction
introduces main features and specifications
Chapter 2 Getting Started
provides abbreviated instructions to get started quickly
Chapter 3 Connecting the cpu/gpuModule
provides information on connecting the cpu/gpuModule to peripherals
Chapter 4 Using the cpu/gpuModule
provides information to develop applications for the cpu/gpuModule, including general
cpu/gpuModule information, detailed information on storing both applications and system
functions, and using utility programs
Appendix A Hardware Reference
lists jumper locations and settings, physical dimensions, and processor thermal
management
Appendix B Troubleshooting
offers advice on debugging problems with your system
Appendix C IDAN™ Dimensions and Pinout
provides connector pinouts for the cpu/gpuModule installed in an RTD Intelligent Data
Acquisition Node (IDAN) frame
Appendix D Additional Information
lists sources and websites to support the cpu/gpuModule installation and configuration
Appendix E Limited Warranty

BDM-610000090 Rev A CNV36JXNX User’s Manual 7
CNV36JXNX cpu/gpuModule
RTD's CNV36JXNX cpu/gpuModule represents the latest in high performance PCIe/104 embedded
controllers witha Type 2 bus. Thisdesignisbased on the NVIDIA®Jetson Xavier NX system-on-module.
The type 2 PCIe bus connector supports Gen 3.0 PCIe for four PCIe x1 lanes and two PCIe x4 lanes. A
M.2 E-key socket is available on the bottom side of the board for wireless modules and a M.2 B-key socket
is available on the top side for WWAN modules or SSDs. Both slots utilize PCI-Express and USB
connectivity.
Jetson Xavier NX Onboard memory consists of 8 GB of embedded 128-bit LPDDR4 DRAM with a speed
of 57.9GB/s.
The cpu/gpuModule’s DisplayPort video interface supports audio and a maximum resolution of 4096 x
2304.
The Jetson Xavier NX has a 16GB eMMC 5.1 Flash storage device, a microSD socket is also available on
the CNV36JXNX carrier for expansion. M.2 NVMe/PCIe based SSDs can also be used with theboard either
by means of the M.2 B-key socket or by using additional carrier board (SSD34200/SSD34100). The onboard
M.2 B-key socket only has USB3.1 and PCIe X1 interfaces. M.2 B+M-key SATA based SSDs will NOT
work in this socket as the NVIDIA Xavier NX does not support SATA peripherals. Because the M.2
NVMe/PCIe socket only has a PCIe x1 interface connected rather than the typical PCIe x2 interface some
NVMe/PCIe based SSDs may experience slower read and write speeds than advertised.
A xHCI controller supplies five USB 3.1 connections, with up to 10Gb/s data throughput each. Two
connections are routed to the bottom PCIe connector and two connections are available at USB A
connectors. One additional USB 2.0 port is utilized in the Utility port for the use of a keyboard and mouse.
Network connectivity is provided by a 10/100/1000 Mbps on-board Ethernet controller.
Other features include two RS-232/422/485 configurable serial ports, one of which (CN7) has a CAN bus
mode. The board also features two MIPI CSI-2 ports which can be used for connecting cameras. These
ports are 15-pin FFC
The CNV36JXNX is also made available in a rugged passively cooled IDAN enclosure.
Figure 1 CNV36JXNX cpu/gpuModule (top view)

BDM-610000090 Rev A CNV36JXNX User’s Manual 8
You can easily customize the cpu/gpuModule by stacking PCI/104-Express or PCIe/104 modules such as
video controllers,Digital Signal Processors, drivecarriers, LAN controllers, or analog and digital data
acquisition modules. Stacking modules onto the cpu/gpuModule avoids expensive installations of
backplanes and card cages and preserves the module's compactness.
The cpu/gpuModule is verified with Linux for Tegra operating system. Ordering Information
The CNV36JXNX cpu/gpuModule is available with one type of system-on-module and heatsink. The
cpu/gpuModule can also be purchased as part of an Intelligent Data Acquisition Node (IDAN™) building
block, which consistsof the cpu/gpuModule and a milled aluminum IDAN frame. The IDAN building
block can be used in just aboutany combination with other IDAN building blocks to create a simple but
rugged PC/104 stack.
Refer to Appendix C IDAN™ Dimensions and Pinout, for more information. The CNV36JXNX
cpu/gpuModule can also be purchased as part of a custom-built RTD HiDAN™ or HiDANplus High
Reliability Intelligent Data Acquisition Node. Contact RTD for more information on its high reliability
PC/104 systems.
Figure 2 CNV36JXNX cpu/gpuModule (With NX and standard
heatsink)

BDM-610000090 Rev A CNV36JXNX User’s Manual 9
CNV36JXNX Model Options
The basic cpu/gpuModule model options are shown below. Refer to the RTD website (www.rtd.com) for
moredetailed ordering information and any new variations that may be available.
Table 1 CNV36JXNX cpu/gpuModule Model Options
Part Number
Description
CNV36JXNX68201HR
NVIDIA® Jetson Xavier NX CPU module with standard heat sink
CNV36JXNX68201HRF
NVIDIA® Jetson Xavier NX CPU module with flat heat spreader
IDAN-CNV36JXNX68201HR
NVIDIA® Jetson Xavier NX CPU module in an IDAN frame
Cable Kits and Accessories
For maximum flexibility, RTD does not provide cables with the cpu/gpuModule. You may wish to
purchase theCNV36JXNX cpu/gpuModule cable kit (XK-CM124), which contains:
•Utility Port 2.0 multi-function cable
-(2x USB 2.0 ports, battery, reset button, power button,speaker)
•DIO cable (DIL-16 to DSUB-25)
•Two serial port cables (DIL-10 to DSUB-9)
•One Ethernet cable (DIL-10 to RJ-45)
For additional accessories, refer to the RTD website.

BDM-610000090 Rev A CNV36JXNX User’s Manual 10
Board Features
•NVIDIA® Jetson Xavier NX system-on-module
Part Number
Cores
Core
Frequency
L1 Cache
L2 Cache
L3 Cache
Stack Height
CNV36JXNX68201HR
3x 2
1.4 GHz -
1.9 GHz
128 KB Instruction
64 KB Data
2 MB per 2-core
cluster
4MB
shared
Any (stack down
only)
•Volta GPU
–384 NVIDIA® CUDA® cores
–48 Tensor cores
–End-to-end lossless compression, Tile Caching, OpenGL® 4.6, OpenGL ES 3.2, Vulkan™
1.10, CUDA 10
–Maximum Operating Frequency: 1100MHz
•Carmel CPU
–ARMv8.2 (64-bit) heterogeneous multi-processing (HMP) CPU architecture
–3x dual-core CPU clusters (six NVIDIA® Carmel processor cores) connected by a high-
performance system coherency interconnect fabric
–L3 Cache: 4 MB (shared across all clusters)
–NVIDIA® Carmel (Dual-Core) Processor: L1 Cache: 128 KB L1 instruction cache (I-cache)
per core; 64 KB L1 data cache (Dcache) per core, L2 Unified Cache: 2 MB per cluster
–Maximum Operating Frequency: 1900 MHz
•Memory
–8 GB 128-bit LPDDR4x DRAM
–Secure External Memory Access
–Using TrustZone® Technology
–System MMU
–Maximum Operating Frequency: 1600 MHz
•Storage
–16 GB eMMC 5.1 Flash Storage
–Bus Width: 8-bit, Maximum Bus Frequency: 200 MHz (HS400)
–micro-SD card slot
–M.2 B-key slot
•Stackable 156-pin PCIe/104 Type 2 bus on bottom
–Two PCI Express x4 Links. Gen 3, 8 GT/s
–Four PCI Express x1 Links. Gen 3, 8 GT/s
–Two USB 2.0
–ATX Power Supply Signaling
–RTC Battery
•Advanced Thermal Management
–Thermal Monitor throttles processor and memory to prevent thermal runaway
–Modified heatsinks and flat heat spreaders are available
–Mini Fan Heatsink with Auto Fan control
–Passive Structural Heatsink & Heatpipes in IDAN and HiDAN System Configurations
•Real-Time Clock (external battery required to maintain time only)
•Complete Single Board Computer

BDM-610000090 Rev A CNV36JXNX User’s Manual 11
I/O
•Networking
–10/100/1000 Gigabit Ethernet
•Imaging
–4 lanes (2x2 lane) MIPI CSI-2 D-PHY 1.2 (2.5 Gb/s per pair, total up to 10 Gbps)
•Display Controller
–One DisplayPort 1.4
–Maximum Resolution 3840x2160 at 60 Hz (up to 36 bpp)
•Software-configurable RS-232/422/485 serial ports, CAN port
–120 Ohm Termination resistors for RS-422/485 through software Configuration
–Fully jumper-less configuration
–One port can be changed to a CAN bus
•Digital I/O (DIO)
–14-bit programmable GPIO
•Four USB 3.1 (Universal Serial Bus) Ports
–Supports 10Gbit/s (Super Speed)
–Two ports on the bottom PCIe connector (CN1)
–Two ports, one on CN11 and one on CN21, USB A connectors
•Automatic resettable over-current protection (1A @ 5 Vdc)
•M.2 expansion slots
–E-key slot for Wi-Fi/Bluetooth connectivity with PCIe, USB2.0 and I2S interfaces
(supported card sizes 3030 or 2230)
–B-key slot for WWAN connectivity or SSD with PCIe, USB3.1, and micro-SIM interfaces
(supported card sizes 3042 or 2242)
•Utility Port 2.0 Connector
–1x USB 2.0 (Universal Serial Bus) Port with 500 mA over-current protection
–Hardware Reset input
–Soft Power Button input
–Battery input for Real Time Clock
•Power Management
–ATX support for “Soft Off”
–ATX Power signals

BDM-610000090 Rev A CNV36JXNX User’s Manual 12
Block Diagram
Figure 3 CNV36JXNX cpu/gpuModule Simplified Block Diagram

BDM-610000090 Rev A CNV36JXNX User’s Manual 13
Specifications
Physical Characteristics
Basic dimensions and the weight of the CNV36JXNX are listed below. For a more detailed dimensional
drawing, refer to the Physical Dimensions section.
•Dimensions
–Board Size (connectors not included)
•Length (L): 99.06 mm L (3.900")
•Width (W): 115.57 mm W (4.550")
–Stack-down Only Design
–Stand-off Height Below the CPU:
•All versions: 15.240mm (0.600")
•Weight: Approximately 0.248 Kg (0.547 lbs.) with fan Heatsink
•Weight: Approximately 0.210 Kg (0.463 lbs.) with flat Heat spreader
•Weight: Approximately 0.123 Kg (0.271 lbs.) without Heatsink
•IDAN Weight: Approximately TBD Kg (TBD lbs.)
Figure 4 Dimensioned Drawing

BDM-610000090 Rev A CNV36JXNX User’s Manual 14
Power Consumption
Exact power consumption depends on the actual application. Typical power consumption of the
CNV36JXNX is listed in Table 2.
Table 2 Typical Power Consumption
Part Number
Typical PowerConsumption
CNV36JXNX68201HR
TBD W
Note Themeasurements listedabove areintended to representcommonusage
scenarios. The cpu/gpuModule’s power consumption is heavily influenced by the
running software and system activity.
Operating Conditions
Table 3 Operating Conditions
VCC5 5VSupply Voltage 4.75V 5.25V
VCC12 12V Supply Voltage NU NU
VCCSTBY 5V Standby
Voltage1
ICCSTBY 5V Standby
4.75V 5.25V
- 800mA
Ta
Current1
Ambient Operating
-40
+70C
Temperature2
Ts
Storage
-40
+70C
Temperature
Rh
Humidity
Non-Condensing
0
90%
MTBF
Mean Time Before
CNV36JXNX68201HR
TBD
Failure (hours)
1. With supplied heat sink solution. Depending on the CPU usage, performance may degrade as the ambient
temperature approaches the maximum. Contact RTD Tech Support for more information.
2. Calculation Model:Telcordia Issue 2; Calculation Method: Method 1 Case 3; Temperature: +30C; Environment:
Ground Benign, Controlled
Symbol Parameter Test Condition Min. Max.

BDM-610000090 Rev A CNV36JXNX User’s Manual 15
Electrical Characteristics
The table below lists the Electrical Characteristics of the CNV36JXNX. Operating outside of these
parameters may cause permanent damage to the cpu/gpuModule.
Table 4 Electrical Characteristics
USB Ports
Ioc Overcurrent Limit Each Port USB2.0 500 mA 750 mA
Ioc Overcurrent Limit Each Port USB3.0 1.0 A 1.3 A
Serial Ports - RS-232
VIN Input Voltage
Range
VOH Output Voltage
Swing
—
RL = 3k
-15V
±-5.0V
+15V
±7.0 V
VIH Input Voltage High
—
1.5 V
2.0V
VIL Input Voltage Low
—
0.6 V
1.2V
Serial Ports - RS-422/485
VOD1 Differential Output
RL = 100 Ohm
2.0V
—
VOD2 Differential Output
RL = 54 Ohm
1.5V
—
VOC Common Mode
Output
RL = 54or100
Ohm
—
3.0V
VTH Differential Input
—
-200 mV
-50 mV
Threshold
VI Absolute Max Input
—
-12 V
-12 V
Voltage
CAN Bus
VO(D)H Bus Output Voltage
Dominant CANH
RL=60Ω
2.45V
3.3V
VO(D)L Bus Output Voltage
Dominant CANL
RL=60Ω
0.5V
1.25V
VO(R) Bus Output
Voltage
Recessive
RL=60Ω
—1.85V
VOD(D) Differential Output
Voltage Dominant
RL=50-65Ω
1.6V
3V
VOD(R) Differential Output
Voltage Dominant
RL=60Ω
-120mV
12 mV
IOS(D) Output Short Circuit
Current Dominant
VCANH=-12V
-200 mA
—
IOS(D) Output Short Circuit
Current Dominant
VCANL=12V
—
200mA
IOS(R) Output Short Circuit
Current Recessive
VCANH,CANL=-
12V…+12V
-5 mA
5 mA
VTH Differential Input
500 mV
900 mV
Threshold
VCM Common Mode
Range
-12 V
-12 V
Symbol Parameter
Test
Condition
Min.
Max.

BDM-610000090 Rev A CNV36JXNX User’s Manual 16
Table 4 Electrical Characteristics
DIO
IOH Output CurrentSource
VOH = 2.4 V
29mA
IOL Output CurrentSink
VOL = 0.5 V
17mA
VIH Input Voltage High
—
1.8V
6V
VIL Input Voltage Low
—
-0.3V
0.8V
IDIOvcc Supply current
—
1 A
TMIN Update Interval
—
TBD ms
Utility Port 2.0 Connector (CN5)
VRTC Input RTC Voltage1
—2.5 V
3.6V
IRTC RTC Battery
Current
—
2.2 uA
IUTILvcc Utility Supply
Current
—
1 A
1. Date and time lost when power is completely removed from the system including the
CMOS battery. Date and time are not required for board operation. BIOS will set
default values on the next power cycle.
Symbol Parameter
Test
Condition
Min.
Max.

BDM-610000090 Rev A CNV36JXNX User’s Manual 17
Migrating to RTD’s NVIDIA® Jetson Series cpu/gpuModule
When migrating to RTD’s NVIDIA® Jetson Series cpu/gpuModule, there are several differences from
preceding RTD cpu/gpuModule product families of which the customer should be aware.
Connector Pinout & Function Differences
The CNV36JXNX cpu/gpuModule have several connector-related differences from a standard RTD CPU,
which are summarizedbelow. Complete information about the connectors on the CNV36JXNX can be
found in Chapter 3, Connecting the cpu/gpuModule.
New I/O Connectors
The CNV36JXNX cpu/gpuModule introduces new I/O connectors that were not present on some previous
RTD cpuModules:
•USB 3.1 Connectors(CN11 and CN21)
–Provide USB 3.0 connections via a Type A receptacle.
•MIPI CSI-2 Connectors (CN13 and CN23)
–Provide camera connectivity using MIPI CSI-2 interface and Flexible Flat Cables
Connector Differences
While some connectors on the CNV36JXNX have identical pinouts as on previous RTD cpuModule
generations, the features of the connectors are sometimes different. Other connectors have entirely different
pinouts than those found on previous cpuModule generations. Connectors with pinout and feature
differences include:
•Auxiliary Power Connector (CN3)
–RTD NVIDIA® Jetson Xavier NX Series CPU requires 5V only. Power may be
connected to CN3.
–12 pins (unlike the 10-pin connector on RTD Montevina cpuModules)
–+5V and +12V inputs (unlike +5V only auxiliary power connectors found on Montevina
cpuModule).
–The Auxiliary Power Connector excludes ATX power signaling. The ATX power signals
are present on the PCIe/104 Type 2 connector.
•DIO Connector (CN6)
–RTD NVIDIA® Jetson Xavier NX Series CPU provide only one port of 14 IO. Previous
cpuModules provide two ports.
•COM Ports (CN7 and CN8)
–Does not support dual mode like previous cpuModules
–CN7 has the ability to be switched into a CAN bus mode

BDM-610000090 Rev A CNV36JXNX User’s Manual 18
Software Differences
The CNV36JXNX cpu/gpuModule have several software-related differences, which are summarized
below. Complete information about these CNV36JXNX features can be found in Chapter 4, Using the
cpu/gpuModule.
DIO
While other RTD cpuModules (such as the CMA34CR-series) feature an aDIO, CNV36JXNX only supports
a 14-bit programmable GPIO. Since the CNV36JXNX doesn’t support aDIO, it will not be possible to
migrate any legacy software based on RTD’s Advanced Digital I/O.
Linux for Tegra
Previous generation of RTD cpuModules contained a Fail-safe Boot ROM image or UEFI shell, which
permitted the cpuModule to boot to a prompt even when no disk drives were connected to the system. Since
the CNV36JXNX is only a carrier module for the NVIDIA® Jetson Xavier NX, this product can only run
operating systems with support packages provided by NVIDIA. RTD will ship CNV36JXNX
cpu/gpuModule with pre-loaded version of Linux for Tegra.

BDM-610000090 Rev A CNV36JXNX User’s Manual 19
Contact Information
RTD Embedded Technologies, Inc.
103 Innovation Blvd.
State College, PA 16803-0906
USA
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
techsuppor[email protected]
[email protected]
Internet: http://www.rtd.com

BDM-610000090 Rev A CNV36JXNX User’s Manual 20
Chapter 2 Getting Started
For many users, the factory configuration of the CNV36JXNX cpu/gpuModule can be used to get a PC/104
system operational. You can getyour system up and running quicklybyfollowing the simple steps described
in this chapter, which are:
Proper Grounding Techniques
Before removing the CNV36JXNX from its static bag, proper grounding techniques must be used to prevent
electrostatic discharge (ESD) damage to the cpu/gpuModule. Common grounding procedures include an
anti-staticmat on a workbench, which may connect to an anti-static wrist strap (also known as an ESD wrist
strap) on the wrist of the technician or engineer.
1. Before connecting the cpu/gpuModule, the user must be properly grounded to prevent
electrostaticdischarge (ESD).
2. Connect the Utility Port 2.0 cable to CN5.
3. Connect a USB keyboard and mouse.
4. Connect a monitor to the DisplayPort connector CN4.
5. Connect power.
6. Boot
Refer to the remainder of this chapter for details on each of these steps.
Selecting the Stack Order for the CNV36JXNX
There are several things to consider when selecting the order of boards in the stack. Before selecting the
order, be sure to determine which bus connector on each board is the “Active” bus. Typically, if a peripheral
module has both PCIe and PCI bus connectors, only the PCIe is active, and the PCI is pass-through. The
following is a list of rules to use to determine the stack order:
1. The PCIe connector is on the bottom of the cpu/gpuModule, therefore it must be the uppermost card
in the stack.
2. The CPU module has no direct SATA links. Any added SATA functionality will consume PCIe
resources.
3. Generally, keep higher speed boards closer to the CPU.
4. If using lane repopulation, consume all lanes before making the last lane repopulate, to
preserve bandwidth.
5. Keep the power supply as close as possible to the CPU due to the high instantaneous current
demands of the CPU.