Auvidea JNX30-LC Product manual

AUVIDEA
JNX30-LC
TECHNICAL
REFERENCE
MANUAL
SCOPE OF WORK
Providing technical information and documentation to the product line JNX30-LC for NVIDIA
Jetson Nano, TX2 NX & Xavier NX
PCB NUMBER
38401
ISSUE DATE [REVISED DATE]
DEC.2021 [DEC.2021]
Version
1.2
PAGES
28

JNX30-LC TECHNICAL REFERENCE MANUAL
VERSION: 1.2 Page 2 of 28 DEC 2021
CONTENTS
SECTION 1 Document revisions and changes ................................................................ 4
SECTION 2 Product revisions and changes .................................................................... 5
2.1 Product versions .......................................................................................................................................... 5
2.2 Design and manufacturing........................................................................................................................... 5
SECTION 3 Overview .................................................................................................... 6
3.1 Jetson compute module .............................................................................................................................. 6
3.2 JNX30-LC ...................................................................................................................................................... 6
3.3 Model pictures............................................................................................................................................. 6
3.4 JNX30-LC features and comparison ............................................................................................................. 7
3.5 Technical specifications ............................................................................................................................... 8
3.6 Power consumption..................................................................................................................................... 8
SECTION 4 Features...................................................................................................... 9
4.1 Booting via SSD ............................................................................................................................................ 9
4.2 Crypto chip................................................................................................................................................... 9
4.3 MCU ............................................................................................................................................................. 9
SECTION 5 Pinout description......................................................................................10
5.1 J1 - Power input jack.................................................................................................................................. 10
5.2 J3 - Ethernet (GbE) ..................................................................................................................................... 10
5.3 J4 - M.2 PCIEx4 NVME SSDs ....................................................................................................................... 10
5.4 J5 - CSI-2 CD ............................................................................................................................................... 11
5.5 J7 – Power out ........................................................................................................................................... 12
5.6 J8 - USB 2.0 ................................................................................................................................................ 12
5.7 J9 - HDMI.................................................................................................................................................... 12
5.8 J10 - CSI-2 AB ............................................................................................................................................. 13
5.9 J11 - USB 3.0 – 3.1...................................................................................................................................... 13
5.10 J12 - Micro USB .......................................................................................................................................... 13
5.11 J14 - UART connector................................................................................................................................. 14
5.12 J32 – CAM LED ........................................................................................................................................... 14
5.13 J36 - Fan connector.................................................................................................................................... 14
5.14 U1 - Crypto chip ......................................................................................................................................... 15
5.15 LED - PWR .................................................................................................................................................. 15
SECTION 6 FAQ ...........................................................................................................16
SECTION 7 Disclaimer..................................................................................................17
SECTION 8 Copyright notice.........................................................................................18
SECTION 9 Appendix A [CSI-Cameras]..........................................................................19
9.1 Connection examples................................................................................................................................. 19

JNX30-LC TECHNICAL REFERENCE MANUAL
VERSION: 1.2 Page 3 of 28 DEC 2021
SECTION 10 Appendix B [GPIO] .....................................................................................21
10.1 Calculate GPIO pins.................................................................................................................................... 21
10.2 GPIO control .............................................................................................................................................. 21
SECTION 11 Appendix C [I2C] ........................................................................................23
11.1 I2C Examples of configurations and how to use........................................................................................ 23
SECTION 12 Appendix D [Install Jetpack] .......................................................................24
12.1 Installed Packages...................................................................................................................................... 24
SECTION 13 End of document........................................................................................28

JNX30-LC TECHNICAL REFERENCE MANUAL
VERSION: 1.2 Page 4 of 28 DEC 2021
SECTION 1 Document revisions and changes
Document
version
Changes
V1.0
initial document, internal verification process
V1.1
internal verification process
V1.2
first release version

JNX30-LC TECHNICAL REFERENCE MANUAL
VERSION: 1.2 Page 5 of 28 DEC 2021
SECTION 2 Product revisions and changes
2.1 Product versions
Product
version
Changes
38401-2

added 5V 8A power supply
added PCIe connector (rotate it compared to rev 1)
added CAN connector (requires external CAN transceiver module - 38163-3)
38401-3
changed MCU footprint from TSSOP-20 to UFQFN-28
supports STM32F042G6U6 and STM32L031G6U6 - dual rail power
added support for MCU flashing from Jetson via UART
changed R110 to 3.01k for maximum input current of 6A
changed main power supply from LT8646 to MIC28514
extended e-fuse support for TPS26630/1 type

added 2nd FAN connector
38401-4

internal release
38401-5

changed 3.3V power supply and power it by 12V
changed MCU LDO (absolute max. input voltage 26V)
added discrete components for power up (no MCU)
moved FAN connector, so that it can be directly plugged
changed over current protection from chip to fuse
2.2 Design and manufacturing
Flexible design and manufacturing
designed and manufactured in Germany
in-house fully automated production line with 3D AOI
special configuration possible with minimum purchase of 25 pcs (display port, M.2, PoE, 48V power
in, super cap option, 2 RPi camera module connectors, SPI, I2C, switches, etc.)
design services: you architect your custom carrier board and Auvidea designs and produces it - please
ask for a quote.

JNX30-LC TECHNICAL REFERENCE MANUAL
VERSION: 1.2 Page 6 of 28 DEC 2021
SECTION 3 Overview
3.1 Jetson compute module
This new JNX30-LC carrier board has been designed for the Jetson Xavier NX primarily, but it also
supports the TX2 NX and Nano compute modules. A 5V 8A on-board power converter supports the
high-power modes of the NX.
3.2 JNX30-LC
Easy integration into passively cooled systems
Easy flashing: just connect a USB OTG cable (AutoFlash)
High performance storage: M.2 NVME PCIe x4
Applications
Industrial AI computers
Digital signage systems
3.3 Model pictures
Top side
Bottom side
JNX30-LC

JNX30-LC TECHNICAL REFERENCE MANUAL
VERSION: 1.2 Page 7 of 28 DEC 2021
3.4 JNX30-LC features and comparison
Description
JNX30-LC
NVIDIA Devkit
Power
6V - 19V (barrel connector)
5V – 19V
NX powering
5V 8A power supply
?
DP
no (optional with some JNX30-LC versions)
yes
HDMI
yes
yes
Fan connector
yes
yes
M.2 NVME Key M
yes
yes
Micro SD card
no (optional with other models)
no
M.2 Key E
only with external module
(using internal USB - J8)
yes
CAN RX / TX
no (optional with other models)
yes
USB 3
1x USB 3.1
(native - full performance)
4x USB 3.1
(via USB hub - shared)
Micro USB
1x Micro USB
(device mode only)
1x Micro USB
(device mode only)
Auto Flashing
yes
(plug in host cable and flash)
no
USB 2.0
1x USB 2.0 (JST-GH, J8)
no
Ethernet
Gigabit RJ45 (2 LEDs)
Gigabit RJ45 (2 LEDs)
PoE option
no
yes - J19
CSI
2x CSI-2 (4 lanes) plus camera LED
(hardware sync available)
2x CSI-2
UART
2x (J14)
2x (40 pin header, P12)
I2C
no (2x optional with some JNX versions)
2x (40 pin header, P12)
I2S
no (2x optional with some JNX versions)
1x (40 pin header, P12)
SPI
no (optional with some JNX30 versions)
2x (40 pin header)
Additional features
Protection
overvoltage protection (TVS diode)
?
Level shifters unidirectional level shifters (work better)
bi-directional (sometimes
cause problems)
Buttons
no
12 pin header
Expandability
1. Fully populated variants available
no
2. Add-on boards for more USB and
Ethernet
3. IMU
4. board EEPROM and crypto chip (for SW
copy protection)
5. PCIe x1 connector
6. LM823 WIFI module
7. 2 more CSI-2 interfaces (2 lanes each)
8. Micro SD card
9. RTC battery (rechargeable)
10. Over current fuse (product safety)
11. UPS option for graceful power down
12. On board MCU for watchdog and
remote power cycle (LTE)

JNX30-LC TECHNICAL REFERENCE MANUAL
VERSION: 1.2 Page 8 of 28 DEC 2021
3.5 Technical specifications
Description
Note
HDMI
standard HDMI connector (2.0)
USB 3.0/3.1
5Gb/s (dependent on compute module)
Physical size
80 x 104.6mm
Mounting holes
4x M3
Temperature range
0 to 70°C (extended temperature range optional)
Humidity
noncondensing
Longevity
Very long as no temperature sensitive components
are used (like electrolytic capacitors)
3.6 Power consumption
Description
JNX30-LC
Carrier board logic
< 1 watt
3.3/5V power converter efficiency
> 90%
Power in converter efficiency
n.a.

JNX30-LC TECHNICAL REFERENCE MANUAL
VERSION: 1.2 Page 9 of 28 DEC 2021
SECTION 4 Features
4.1 Booting via SSD
Auvidea ships some development systems with a pre-configured SSD. This contains a bootable
partition which can be larger than the storage capacity of the integrated eMMC flash memory on the
compute module. This allows the installation of all tools and supporting applications in the boot
partition:
Linux
Jetpack 4.x
A large selection of SDKs like listed in appendix D (CUDA, VisionWorks, DeepStream and
more)
3rd party applications and demo programs
Sample video files to immediately try out the AI models
The SSD typically included is a 128GB NVME SSD by Transcend (model: TS128GMTE110S). It offers
very high performance as it connects to the compute module with 4 PCIe Gen2 lanes (5 Gbit/s).
Installation:
Full length 2280 SSDs must be inserted carefully as the SO-DIMM socket of the compute module
blocks tilting. Please slide the SSD in carefully from the side and ensure, that it is seated properly
before applying power. Secure the SSD with a M3 (nylon) screw. Metal screws must be treated with
care, so that the head of the screw is small enough that it does not touch any traces or components
on the compute module
High power SSDs may require extra cooling by installing a thermal pad between the SSD and the
compute module or the carrier board.
4.2 Crypto chip
The crypto chip has been added to support software licensing and copy protection. Please check the
data sheet of the manufacturer for details.
Model: ATSHA204A-MAHCZ-T
https://ww1.microchip.com/downloads/en/DeviceDoc/ATSHA204A-Data-Sheet-40002025A.pdf
4.3 MCU
A MCU for additional power management and watchdog functions is optional. It is standard on some of the
extended versions of the JNX30. The MCU can provide features like:
Powering control (up and down) of the compute module
Brown out protection
Clean boot after short power interruptions
Watchdog support: it can connect to the debug console of the compute module
Remote power cycle via LTE (requires LTE module with UART interface – like SIMCOM
modules)

JNX30-LC TECHNICAL REFERENCE MANUAL
VERSION: 1.2 Page 10 of 28 DEC 2021
SECTION 5 Pinout description
Please note that the software GPIO number differs from the socket pin number. This software GPIO
number must be computed with a special formula and differs between the various compute
modules. Please see appendix B for details.
5.1 J1 - Power input jack
Nexus
Pin
Description
Note
1
12V
12V nominal (absolute max. 20V)
recommend power supply 12V 36W (or higher)
Reverse voltage protection
over voltage protection (SMA6J18CA) with max 20V peak
2
GND
5.2 J3 - Ethernet (GbE)
Standard RJ45 pinout with PoE capable magnetics class 3 and 4 (PD or PSE). Connected to the
Ethernet controller on the compute module. PoE-PD and PoE-PSE are supported with the
corresponding variants of the JNX30. Also, there is the new JNX30 PDiso (38481) with isolated PoE-
PD.
5.3 J4 - M.2 PCIEx4 NVME SSDs
Please note that only NVME SSDs are supported. SATA SSDs are not supported. We recommend the
128GB Transcend SSDs (TS128GMTE110S). This SSD is standard in some of the Auvidea dev kit
offerings.