Auvidea JNX42 Product manual

AUVIDEA
JNX42
TECHNICAL
REFERENCE
MANUAL
SCOPE OF WORK
Providing technical information and documentation to the product line JNX42 for Nvidia
Jetson Orin Nano & Orin NX
PCB NUMBER
38556
ISSUE DATE [REVISED DATE]
May.2023 [25.MAY.2023]
Version
1.4
PAGES
31

JNX42 TECHNICAL REFERENCE MANUAL
VERSION: 1.0 Page 2 of 31 Apr 2023
Contents
SECTION 1 Document revisions and changes ................................................................ 4
SECTION 2 Product revisions and changes .................................................................... 5
SECTION 3 Overview .................................................................................................... 6
3.1 JNX42 ........................................................................................................................................................... 6
3.2 JNX42 features and comparison .................................................................................................................. 6
3.3 Technical specifications ............................................................................................................................... 7
3.4 Model pictures............................................................................................................................................. 8
3.5 Power consumption..................................................................................................................................... 9
3.6 Options ........................................................................................................................................................ 9
SECTION 4 FEATURES ..................................................................................................10
4.1 Crypto chip (optional)................................................................................................................................ 10
4.2 MCU chip ................................................................................................................................................... 10
SECTION 5 Pinout description top side.........................................................................11
5.1 J1 - Power input jack.................................................................................................................................. 11
5.2 J3 - Ethernet (GbE)..................................................................................................................................... 11
5.3 J4 - M.2 PCIEx4 NVME SSDs ....................................................................................................................... 12
5.4 J5 - CSI-2 CD ............................................................................................................................................... 12
5.5 J6 USB 3.0 –3.1.......................................................................................................................................... 13
5.6 J7 –Power out ........................................................................................................................................... 14
5.7 J8 - USB 2.0 ................................................................................................................................................ 14
5.8 J9 - HDMI.................................................................................................................................................... 14
5.9 J10 - CSI-2 AB ............................................................................................................................................. 14
5.10 J11 - USB 3.0 –3.1...................................................................................................................................... 14
5.11 J12 - Micro USB.......................................................................................................................................... 15
5.12 J14 –UART Connector ............................................................................................................................... 15
5.12.1 UART configuration of the JNX42 ...................................................................................................... 16
5.13 J19 –CAN ................................................................................................................................................... 16
5.14 J+20 - Reset Button.................................................................................................................................... 16
5.15 J22 –SPI ..................................................................................................................................................... 17
5.16 J32 –CAM LED ........................................................................................................................................... 17
5.17 J35 CAN...................................................................................................................................................... 18
5.18 J13 - Fan connector.................................................................................................................................... 18
5.19 PoE and Power module connector ........................................................................................................... 19
5.20 U10 –IMU BMI088 .................................................................................................................................... 20
5.21 LED - PWR .................................................................................................................................................. 20
SECTION 6 Pinout description bottom side ..................................................................20
6.1 LED - Eth..................................................................................................................................................... 20
6.2 LED - Over current ..................................................................................................................................... 20
SECTION 7 FAQ ...........................................................................................................21

JNX42 TECHNICAL REFERENCE MANUAL
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SECTION 8 Disclaimer..................................................................................................22
SECTION 9 Copyright notice.........................................................................................23
SECTION 10 Appendix A [CSI-Cameras]..........................................................................24
10.1 Camera connection example ..................................................................................................................... 24
SECTION 11 Appendix B [GPIO] .....................................................................................25
11.1 GPIO control .............................................................................................................................................. 25
11.1.1 Change direction to in ....................................................................................................................... 25
11.1.2 Change direction to out..................................................................................................................... 25
11.1.3 Set GPIO low ...................................................................................................................................... 25
11.1.4 Set GPIO high..................................................................................................................................... 25
11.1.5 Readout GPIO value........................................................................................................................... 25
11.2 Pin to GPIO reference sheet for Xavier-NX/Nano/TX2-NX ........................................................................ 26
11.3 How to calculate GPIOs.............................................................................................................................. 27
11.3.1 GPIOnumber ...................................................................................................................................... 27
11.3.2 GPIOletter.......................................................................................................................................... 27
11.3.3 GPIOnumber ...................................................................................................................................... 27
11.3.4 GPIOoffset ......................................................................................................................................... 27
11.3.5 Example ............................................................................................................................................. 27
11.3.6 Table.................................................................................................................................................. 28
SECTION 12 Appendix C [I2C] ........................................................................................29
12.1 I2C device bus ............................................................................................................................................ 29
12.2 I2C usage of devices and registers............................................................................................................. 29
12.2.1 List i2c devices on a specific bus ........................................................................................................ 29
12.2.2 Dump i2c device registers.................................................................................................................. 30
12.2.3 Set register value:.............................................................................................................................. 30
12.2.4 Read register value:........................................................................................................................... 30
12.2.5 Test IMX219 camera stream ............................................................................................................. 30
SECTION 13 END OF DOKUMENT...................................................................................31

JNX42 TECHNICAL REFERENCE MANUAL
VERSION: 1.0 Page 4 of 31 Apr 2023
SECTION 1 Document revisions and changes
Document
version
Changes
V1.0
Initial document, internal verification process
V1.1
internal verification process

JNX42 TECHNICAL REFERENCE MANUAL
VERSION: 1.0 Page 5 of 31 Apr 2023
SECTION 2 Product revisions and changes
Product
version
Changes
38556
▪First version
38556-2
▪swapped CAM1_PWR and CAM2_PWR ( rev 1 needs device tree change, to
correct this in software) –rev 2 is now compatible to the NVIDIA device tree
▪RXD pulldown added
▪added coin cell holder for 6.8mm cells (MC621, V364, SC621, MS518SE,
MS621FE) –optional
▪added EEPROM
▪changed IMU to BMI088
▪added Harting 3 pin power input connector (Harting 14110313002000):
1 - 24V AO
2 - 24V (GPIO)
3 –GND
connect ignition controlled power to pin 2 (J37)
▪added J30 coin cell holder for 10mm cells (CR1025) –optional
▪added J18 coin cell holder for 20mm cells (CR2032) –default configuration
▪added JST-SM alternative to RJ45 - optional
38556-3
(planned)
▪Change UART routing to connector (add console UART)

JNX42 TECHNICAL REFERENCE MANUAL
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SECTION 3 Overview
3.1 JNX42
The JNX42 carrier board has been designed for the Jetson Orin Nano and Orin NX primarily.
(Nano, TX2NX and Xavier NX will only support one USB 3.0 port and only one CSI-2 interface.)
The JNX42 supports low level remote system management features:
▪remote power cycle
▪change of boot device
Orin: primary: SSD, secondary: USB
Nano/TX2NX/Xavier NX: primary eMMC, secondary: SSD or vice versa)
▪Limited remote debugging
Please note that the JNX44/45/46 offer enhanced system management features.
The features above are implemented with the following hardware:
▪UART connection between MCU and LTE module
this requires a LTE module with USB and UART (e.g. SIMCOM 7600)
it also requires firmware enhancement of the MCU
▪Console UART connection (Jetson and MCU)
Easy integration into passively cooled systems
▪Easy flashing: just connect a USB OTG cable (Auto Flash)
▪High performance storage: M.2 NVME PCIe x4
3.2 JNX42 features and comparison
Description
JNX42-LC
JNX42-LM
JNX42-M2
Power
6V - 19V (barrel
connector)
6V - 19V (barrel
connector)
6V - 19V (barrel
connector)
NX powering
5V 8A power supply
5V 8A power
supply
5V 8A power supply
DP
no
HDMI
yes
Fan
connector
Yes
M.2 NVME
Key M
yes
Micro-SD
card
no
M.2 Key E
no
yes (PCIe)
yes (USB + PCIe)
CAN RX / TX
1x (requires external transceiver)
USB 3.x
1x USB 3.1
(native - full performance)
micro USB
1x Micro USB
1x Micro USB
1x Micro USB

JNX42 TECHNICAL REFERENCE MANUAL
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(device mode)
(host and device
mode)
(host and device
mode)
Auto Flashing
yes
(plug in host cable and flash)
USB 2.0
No
1x USB 2.0 (JST-GH, J8, J23)
Ethernet
Gigabit RJ45 (one LED)
PoE option
yes, add-on module is required
CSI
2x CSI-2 (4 lanes) plus camera LED
(hardware sync available)
UART
1x (UART2)
2x (UART 0+2)
I2C
(CSI-2 only)
3x
3x
I2S
-
1x (1.8V)
SPI
-
1x (1.8V)
Host mode: peripheral devices like mouse and keyboard may be connected
Device mode: the USB port is in “slave” mode to support connection to host PC (e.g. flashing or
remote access –virtual network connection - 192.168.55.1)
UART0: user UART port with RTS and CTS (1.8V level)
UART2: console UART port (only available with rev 3)
3.3 Technical specifications
Description
Note
HDMI
standard HDMI connector (2.0)
USB 3.1
10Gb/s
Physical size
80x 104.6mm
Mounting holes
4x 3.2mm (for M3)
Temperature range
0 to 70°C (extended range optional)
Humidity
noncondensing
Longevity
no temperature sensitive components
(like electrolytic capacitors)

JNX42 TECHNICAL REFERENCE MANUAL
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3.4 Model pictures
Top side
Bottom side
JNX4
2-LM
JNX4
2-M2

JNX42 TECHNICAL REFERENCE MANUAL
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3.5 Power consumption
Description
JNX42
Carrier board logic
< 1 watt
3.3/5V power converter efficiency
> 90%
Power in converter efficiency
> 90%
3.6 Differentiating features
▪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 and more.)
▪design services: you architect your custom carrier board and Auvidea designs and produces it
- please ask for a quote

JNX42 TECHNICAL REFERENCE MANUAL
VERSION: 1.0 Page 10 of 31 Apr 2023
SECTION 4 FEATURES
4.1 Crypto chip (optional)
The crypto chip is optional. Please check the data sheet of the manufacturer for details.
Model: ATSHA204A-MAHDA-T
https://ww1.microchip.com/downloads/en/DeviceDoc/ATSHA204A-Data-Sheet-40002025A.pdf
4.2 MCU chip
A on board MCU for watchdog and low level system management functions (via LTE). The MCU can receive text
messages via an UART connection to compatible LTE M.2 cards (e.g. Simcom SIM7600). With these messages
low level system management can be performed. Please note that this requires an optional MCU firmware.
The source code to this firmware may be licensed.
▪power cycle or reset
▪change of boot order
4.3 USB 2.0 hub
The LM and M2 versions feature a 4 port USB 2.0 hub controller (GL850G).
Uplink: USB1 (115/117) of the Jetson
Port 1: USB 2.0 of dual USB 3 connector (lower port)
Port 2: USB 2.0 of dual USB 3 connector (upper port)
Port 3: M.2 key B LTE slot
Port 4: LM module (LM) or M.2 key E slot (M2) plus J8 (shared)