Lantronix Intrinsyc Open-Q 865XR SOM User manual

Open-Q™ 865XR SOM Development Kit
User Guide
Part Number PMD-00028
Revision A August 2020

Open-Q 865XR SOM Development Kit User Guide 2
Your use of this document is subject to and governed by those terms and conditions in the
LICENSE AND PURCHASE TERMS AND CONDITIONS FOR INTRINSYC DEVELOPMENT
PLATFORM KITS, which you or the legal entity you represent, as the case may be, accepted and
agreed to when purchasing a Development Kit from Intrinsyc Technologies Corporation
(“Agreement”). You may use this document, which shall be considered part of the defined term
“Documentation” for purposes of the Agreement, solely in support of your permitted use of the
Development Kit under the Agreement. Distribution of this document is strictly prohibited without
the express written permission of Intrinsyc Technologies Corporation and its respective licensors,
which they can withhold, condition or delay in its sole discretion.
Lantronix is a trademark of Lantronix, Inc., registered in the United States and other countries.
Intrinsyc is a trademark of Intrinsyc Technologies Corporation, registered in Canada and other
countries.
Qualcomm® is a trademark of Qualcomm® Incorporated, registered in the United States and
other countries. Other product and brand names used herein may be trademarks or registered
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This document contains technical data that may be subject to U.S. and international export, re-
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prohibited.
© 2020 Lantronix, Inc. All rights reserved.
Contacts
Lantronix, Inc.
7535 Irvine Center Drive, Suite 100
Irvine, CA 92618, USA
Toll Free: 800-526-8766
Phone: [phone]
Fax: [phone]
IES Support
Support: https://helpdesk.intrinsyc.com
Lantronix Technical Support
Online: http://www.lantronix.com/support
Sales Offices
For a current list of our domestic and international sales offices, go to the Lantronix web site at
http://www.lantronix.com/about-us/contact/

Open-Q 865XR SOM Development Kit User Guide 3
Revision History
Date
Rev.
Comments
August 2020
A
Preliminary Initial Lantronix document
For the latest revision of this product document, please go to: http://tech.intrinsyc.com.

Open-Q 865XR SOM Development Kit User Guide 4
Table of Contents
Contacts _________________________________________________________________ 2
Revision History ___________________________________________________________ 3
Table of Contents __________________________________________________________ 4
List of Figures_____________________________________________________________ 6
List of Tables _____________________________________________________________ 6
1Introduction 7
1.1 Purpose ___________________________________________________________ 7
1.2 Scope _____________________________________________________________ 7
1.3 Intended Audience ___________________________________________________ 7
2Documents 8
2.1 Applicable Documents ________________________________________________ 8
2.2 Reference Documents ________________________________________________ 8
2.3 Terms and Acronyms _________________________________________________ 8
3Open-Q 865XR SOM Development Kit 10
3.1 Introduction _______________________________________________________ 10
3.2 Development Platform Notice__________________________________________ 10
3.3 Anti-Static Handling Procedures _______________________________________ 10
3.4 Development Kit Contents ____________________________________________ 10
3.4.1 Important Locations ______________________________________________ 11
3.4.2 Block Diagram __________________________________________________ 14
3.4.3 Optional Accessories _____________________________________________ 14
3.5 Getting Started _____________________________________________________ 15
3.5.1 Registration ____________________________________________________ 15
3.5.2 Configuration Switch Settings ______________________________________ 15
3.5.3 Powering Up the Development Kit ___________________________________ 15
3.6 Open-Q 865XR SOM ________________________________________________ 16
3.7 Open-Q 865XR SOM Carrier Board_____________________________________ 16
3.7.1 SOM Board to Board Connectors (33) ________________________________ 18
3.7.2 Boot Configuration DIP Switch S2500 (37) ____________________________ 18
3.7.3 Input Power Selection ____________________________________________ 19
3.7.4 Current Sense Header J301 (35) and J901 (39) ________________________ 21
3.7.5 Coin Cell Battery Holder B300 (30) __________________________________ 23
3.7.6 Power Header J700 (29) __________________________________________ 23
3.7.7 User Buttons and LEDs (7, 36, 41, 42) _______________________________ 25
3.7.8 Debug Serial UART over USB J1500 (12) _____________________________ 26
3.7.9 Optional Debug UART Header J1501 (9) _____________________________ 26
3.7.10 USB 3.1 Type C (for ADB) J2200 (11) _______________________________ 26
3.7.11 USB 3.1 Type A Connector J2300 (5) _______________________________ 27
3.7.12 Micro SD Card Socket J1400 (22) __________________________________ 27

Open-Q 865XR SOM Development Kit User Guide 5
3.7.13 Display Connector J1300 (38) _____________________________________ 28
3.7.14 Camera Connectors J1000 (15), J1100 (16), J1200 (17)_________________ 29
3.7.15 Camera option Connectors J1001 (18), J1101 (19), J1201(20)____________ 30
3.7.16 M.2 PCIe Card Connector J2700 (24) _______________________________ 30
3.7.17 Digital IO Expansion Header J2100 (23) _____________________________ 32
3.7.18 Sensor IO Expansion Header J2000 (21) ____________________________ 33
3.7.19 Audio Inputs Expansion Header J1800 (27) __________________________ 34
3.7.20 Audio Outputs Expansion Header J1801 (26) _________________________ 35
3.7.21 Audio IO Expansion Header J1900 (10) _____________________________ 36
3.7.22 Audio Headset Jack J1700 (8) _____________________________________ 38
3.7.23 WLAN / BT Antenna Connections (13, 14) ___________________________ 38
3.7.24 Quiet Thermistor RT800 (34) ______________________________________ 38

Open-Q 865XR SOM Development Kit User Guide 6
List of Figures
Figure 1. Assembled Open-Q 865XR SOM Development Kit ....................................................... 11
Figure 2. Open-Q 865XR SOM Dev Kit Block Diagram................................................................. 14
Figure 3. DIP switch assignments.................................................................................................. 18
Figure 4. Input Power Selection Locations .................................................................................... 19
Figure 5. SOM Current Sense Header J301 (5) ............................................................................ 21
Figure 6. VPH Current Sense Header J901 (39) ........................................................................... 22
Figure 7. M.2 PCIe USB Enable DIP Switch (6) ............................................................................ 27
Figure 8. Micro SD Card Socket J1400 ......................................................................................... 28
Figure 9. Display Connector J1300................................................................................................ 29
Figure 10. M.2 PCIe and Optional SIM Card Sockets ................................................................... 31
List of Tables
Table 1. List of Development Kit Features itemized in the figure above ....................................... 12
Table 2. Carrier Board Features .................................................................................................... 16
Table 3. Boot Configuration DIP Switch & Header Settings .......................................................... 19
Table 4. Battery ID / Thermistor Configuration DIP Switch Settings ............................................ 20
Table 5. Battery Connector J300 Pinout........................................................................................ 21
Table 6. Power Header J301 Pinout ............................................................................................. 22
Table 7. Power Header J901 Pinout.............................................................................................. 23
Table 8. Power Header J700 (29).................................................................................................. 24
Table 9. Development Kit Buttons (7)............................................................................................ 25
Table 10. Development Kit LEDs (36) ........................................................................................... 25
Table 11. Debug UART J1501 Pinout............................................................................................ 26
Table 12. Camera option Connectors pinout ................................................................................. 30
Table 13. Digital IO Expansion Header J2100 Pinout ................................................................... 32
Table 14. Sensor Expansion Header J2000 Pinout...................................................................... 33
Table 15. Audio Inputs Expansion Header Pinout J1800 .............................................................. 34
Table 16. Audio Outputs Expansion Header Pinout J1801 ........................................................... 35
Table 17. Audio IO Expansion Header Pinout J1900 .................................................................... 36

Open-Q 865XR SOM Development Kit User Guide 7
1 Introduction
1.1 Purpose
The purpose of this user guide is to provide instructions and technical information on the Open-Q 865XR
SOM Development Kit.
You can find information on this and other Lantronix development kits on the Lantronix web site:
http://www.lantronix.com/products
1.2 Scope
This document will cover the following items on the Open-Q 865XR SOM Development Kit:
•Block Diagram and Overview
•Hardware Features
•Configuration
•SOM
•Carrier Board
•Available peripherals
1.3 Intended Audience
This document is intended for users who would like to develop custom applications on the Lantronix
Open-Q 865XR SOM Development Kit.

2: Documents
Open-Q 865XR SOM Development Kit User Guide 8
2 Documents
This section lists the supplementary documents for the Open-Q 865XR SOM Development Kit.
2.1 Applicable Documents
REFERENCE
TITLE
A-1
Intrinsyc License and Purchase Terms and Conditions for the Open-Q 865XR
SOM
2.2 Reference Documents
The below listed documents are available on the Technical Portal: https://tech.intrinsyc.com (dev kit
registration required)
REFERENCE
TITLE
R-1
Open-Q 865XR SOM HW Datasheet
R-2
Open-Q 865XR SOM Carrier Board Design Guide
R-3
Open-Q 865XR SOM Schematics (SOM and Carrier)
R-4
Open-Q 865XR SOM Development Kit – Display Adapter Design Guide
R-5
Open-Q 865XR SOM Development Kit – Camera Adapter Design Guide
R-6
Open-Q 865XR SOM Development Kit – Battery Charging Tech Note
2.3 Terms and Acronyms
Term and acronyms
Definition
AMIC
Analog Microphone
ANC
Audio Noise Cancellation
B2B
Board to Board
BT LE
Bluetooth Low Energy
CSI
Camera Serial Interface
DSI
MIPI Display Serial Interface
EEPROM
Electrically Erasable Programmable Read only memory
eMMC
Embedded Multimedia Card
FCC
US Federal Communications Commission

2: Documents
Open-Q 865XR SOM Development Kit User Guide 9
FWVGA
Full Wide Video Graphics Array
GPS
Global Positioning system
HDMI
High Definition Media Interface
HSIC
High Speed Inter Connect Bus
JTAG
Joint Test Action Group
LNA
Low Noise Amplifier
MIPI
Mobile Industry processor interface
MPP
Multi-Purpose Pin
NFC
Near Field Communication
QUP
Qualcomm Universal Peripheral (Serial interfaces like UART / SPI /
I2C/ UIM)
RF
Radio Frequency
SATA
Serial ATA
SLIMBUS
Serial Low-power Inter-chip Media Bus
SOM
System on Module
SPMI
System Power Management Interface (Qualcomm PMIC / baseband
proprietary protocol)
SSBI
Single wire serial bus interface (Qualcomm proprietary mostly PMIC /
Companion chip and baseband processor protocol)
UART
Universal Asynchronous Receiver Transmitter
UFS
Universal Flash Storage
UIM
User Identity module
USB
Universal Serial Bus
USB HS
USB High Speed
USB SS
USB Super Speed

3: Open-Q 865XR SOM Development Kit
Open-Q 865XR SOM Development Kit User Guide 10
3 Open-Q 865XR SOM Development Kit
3.1 Introduction
The Open-Q 865XR provides a quick reference and evaluation platform for the Qualcomm SXR2130P
Platform. The development kit is suited for Android application developers, OEMs, consumer
manufacturers, hardware component vendors, camera vendors, and product designers to evaluate,
optimize, test and deploy applications that can utilize the Qualcomm SXR2130P Platform technology.
3.2 Development Platform Notice
This development platform contains RF/digital hardware and software intended for engineering
development, engineering evaluation, or demonstration purposes only and is meant for use in a controlled
environment. This device is not being placed on the market, leased or sold for use in a residential
environment or for use by the general public as an end user device.
This development platform is not intended to meet the requirements of a commercially available
consumer device including those requirements specified in the European Union directives applicable for
Radio devices being placed on the market, FCC equipment authorization rules or other regulations
pertaining to consumer devices being placed on the market for use by the general public.
This development platform may only be used in a controlled user environment where operators have
obtained the necessary regulatory approvals for experimentation using a radio device and have
appropriate technical training. The device may not be used by members of the general population or other
individuals that have not been instructed on methods for conducting controlled experiments and taking
necessary precautions for preventing harmful interference and minimizing RF exposure risks. Additional
RF exposure information can be found on the FCC website at
http://www.fcc.gov/oet/rfsafety/
3.3 Anti-Static Handling Procedures
The Open-Q 865XR SOM Development Kit has exposed electronics and chipsets. Proper anti-static
precautions should be employed when handling the kit, including but not limited to:
•Using a grounded anti-static mat
•Using a grounded wrist or foot strap.
3.4 Development Kit Contents
The Open-Q 865XR SOM Development Kit comes with Android software pre-programmed and includes
the following:
oOpen-Q 865XR SOM with the Qualcomm SXR2130P processor
oMini-ITX form-factor carrier board
oAC power adapter

3: Open-Q 865XR SOM Development Kit
Open-Q 865XR SOM Development Kit User Guide 11
3.4.1 Important Locations
The diagram below shows the locations of key components, interfaces, and controls.
2
143
29
30
34
589
10 11 127 13
14
17
20
16
19
15
37
36
21
22
27
23
26
18
28
32
31
33
38
6
25
35 40
39
41
42
24
Figure 1. Assembled Open-Q 865XR SOM Development Kit

3: Open-Q 865XR SOM Development Kit
Open-Q 865XR SOM Development Kit User Guide 12
Table 1. List of Development Kit Features itemized in the figure above
Position
Feature Description
Reference Designator
1
DC Power Supply Jack
J400
2
Power Source Selector
S300
3
Battery Input Header
J300
4
Battery Configuration DIP Switch
S301
5
USB 3.1 Type A Connector
J2300
6
M.2 PCIe USB Enable DIP Switch
S2301
7
Buttons: General Purpose / Power / Volume Up / Volume Down
S2401 / S2403 / S2400
/ S2402
8
Audio Headset Jack
J1700
9
Debug UART Header
J1501
10
Audio I/O Header
J1900
11
USB 3.1 Type-C connector for ADB
J2200
12
USB Serial Debug Console
J1500
13
WLAN/BT Channel 0 External Antenna Connector
J2601
14
WLAN Channel 1 External Antenna Connector
J2600
15
Camera 1 Connector
J1000
16
Camera 2 Connector
J1100
17
Camera 3 Connector
J1200
18
Camera 1 Option Header
J1001
19
Camera 2 Option Header
J1101
20
Camera 3 Option Header
J1201
21
Sensors Expansion Header
J2000
22
Micro SD card socket (on bottom side of Carrier Board)
J1400
23
Digital IO Expansion Header
J2100

3: Open-Q 865XR SOM Development Kit
Open-Q 865XR SOM Development Kit User Guide 13
Position
Feature Description
Reference Designator
24
M.2 PCIe Card Connector (on bottom side of Carrier Board)
J2700
25
SIM Card Socket for M.2 PCIe (on bottom side of Carrier
Board)
J2701
26
Audio Outputs Expansion
J1801
27
Audio Inputs Expansion
J1800
28
Audio Codec Module (on top side of Carrier Board underneath
Display Adapter)
U1600
29
Power Header
J700
30
Coin Cell Holder
B300
31
Open-Q 865XR SOM, WLAN/BT CH0 Antenna Connector
J3700 (on SOM)
32
Open-Q 865XR SOM, WLAN CH1 Antenna Connector
J3800 (on SOM)
33
Open-Q 865XR SOM
34
On-Board Quiet Thermistor
RT800
35
SOM Current Sense Probe Header(SOM_SYS_PWR)
J301
36
LEDs: (BOOT State / Blue / Green / Red )
DS2403 / DS2400 /
DS2401 / DS2402
37
System Configuration DIP Switch
S2500
38
Open-Q LCD Panel
39
SOM Current Sense Probe Header(VPH_PWR)
J901
40
Force USB Boot Header
J2500
41
Main Power LED
DS2407
42
VBUS LED
DS2405

3: Open-Q 865XR SOM Development Kit
Open-Q 865XR SOM Development Kit User Guide 14
3.4.2 Block Diagram
The block diagram below shows the connectivity and major components of the Open-Q 865XR SOM
Development Kit.
PM8150L - Core PMIC2
(WLED/BOB/LDO)
OpenQ865 SOM DEVKIT
OpenQ865 SOM DEVKIT
OpenQ865 uSOM
PM8150B - Interface PMIC
CHARGER/FG
EBI0/EBI1
LPDDR5 6GB Micron
MT62F768M64D4BG-036
UFS0
UFS 64GB SanDisk
SDINDDH4-64G
MIPI DSI0 4 lanes
MIPI CSI0 4 lanes
CCI0/1(GP101/2/3/4), MCLK0(GP94)
QCA6391
802.11a/b/g/n/ac
MIPI CSI1 4 lanes
MIPI CSI2 4 lanes
SDC2
Audio Codec
WCD9385
(Intrinsyc
Audio Module)
BATT
CONN
CAM1
CAM2
CAM POWER
CAM POWER
3V3
2V8
1V1
3V3
2V8
1V1
Power
B
uSD Card
Socket
TPS54020
12V-3.9V
DC_IN_12V
PWR
HEADER
CAM3 CAM POWER
3V3
2V8
1V1
DISPLAY CONN
DEBUG
SERIAL
microUSB
QUP12_UART(GPIO34/35)
HEADSET
JACK
AUDIO INPUT
EXPANSION CONN
AUDIO OUTPUT
EXPANSION CONN
SENSOR CONN
R
G
PM8250 PHONE_ON_N
PM8250 CBL_PWR_N
PM8250 PM_RESIN_N
PM8250 VOLP_N
GPIO27 BOOT CONFIG1
FORCED_USB_BOOT
BATT ID/THERM
ON Board SELECT
CCI0/1, MCLK0, CAM0_CTRLS
CSI0
CSI1
CSI2
PM8150L VREG_WLED
DISPLAY POWER
QUP13_I2C
GPIO144/67/2/1/66/75/3
PM8150L VDISP_P/M
SDC2
TOUCH_I2C
LCD_CTRLS
VDISP_P/M
DSI0
GPIO146-151 SWR 2x CDC_LINEOUTx
3x CDC_INx_P/N
CDC_HPH_L/R, MIC_INx_P/N
SNS_I3C1 (GPIO162/3)
SNS_SPI2 (GPIO164-167)
SNS_IRQs SSC INTERRUPTS
3V9
OR
VBATT
SWR
VREG_L9C_2P96
BATT_THERM
BATT_ID
FTDI
USB-UART TCVR
VREG_L8C_1P8
VREG_L10C_3P0
3x MIC_BIASx
CDC_EAR_P/N
MIC_BIASx
MBHC_HS_DET_L
DEBUG
SERIAL
3PIN
QUP0_UART
3xCDC_DMIC_CLK/DAT
CDC_SWR_CLK/DAT
SPK_AMP_EN
AUDIO DIGITAL I/O
EXPANSION CONN
PM8150L RGB_GRN
PM8150L RGB_RED
PM8150L RGB_BLU
VBATT
3V9
TPS61253
5V BOOST
TPS630252
3.3V BUCK
RT8077
1.5V BUCK
LD39200
1V3-1V1
x3 (CAM)
RP114K281
3V3-2V8
X3 (CAM)
MB_VREG_5P0
MB_VREG_3P3
MB_VREG_1P5
MB_CAM0/1/2_AVDD
MB_CAM0/1/2_VCM
MB_VREG_1P5
VREG_CAM0/1/2_DVDD
VREG_L9C_2P96
USB
Type-A
USB1_VBUS
GPIO156-159 LPI MI2S2
MV_VREG_1P8
MB_VREG_3P3
MB_VREG_5P0
DC_IN_12V
VREG_WLED
MI2S, SPEAKER I2S
TC7USB40MU
USB SWITCH
DUAL
USB HS SWITCH
USB1 SS
USB1 SS
USB1 HS
USB1 HS
PCIe
M.2
USB HS PCIE M.2
PCIE2
PCIE2
GPIO26
HIGH SIDE
SWITCH
USB_VBUS_EN
GPIO117 GP_USER
SIM
PM8250 - Core PMIC1
(GENERAL HK/UI/GPIO/
SMPS/LDO)
VREG_L13A_3P0
UMI
RF
FEM
PM8009 –
QCA PMU (SOM)
PMK8002 –
CLK DISTRIBUTION
(SOM)
PM3003A – DDR_CORE (SOM)
CCI0/1(GP101/2/3/4), MCLK1(GP95)
CCI0/1, MCLK1, CAM1_CTRLS
CCI0/1(GP101/2/3/4), MCLK2(GP96)
CCI0/1, MCLK2, CAM2_CTRLS
MIPI DSI1 4 lanes DSI1
DIGITAL IO
EXPANSION HEADER
QUP14_SPI
QUP14
QUP18
VREG_S4A_1P8
MB_VREG_3P3
QUP18_SPI
QUP4_SPI
QUP4
MB_VREG_5P0
USB0 SS
GPIO152-155 LPI MI2S1
GPIO146-151 LPI MI2S0
GPIO133-137 MI2S2
QUP1_I2C(GPIO4/5) QUP1 I2C
SNS_I2C3(GPIO168/9)
SNS_I2C4(GPIO170/1)
SNS_I3C0 (GPIO160/1) SSC_I2C/SPI/UART
PM8150L_PWM (GP10)
PM8150L_PWM
USB0 HS
USB CC1/2/SBU
USB0 SS
USB0 HS
USB0 CC1, CC2, SBU
WLAN_COEX
WL_XFEM_TX_EN
WLAN_COEX
WL_XFEM_TX_EN
USB_VBUS
DC JACK
VPH_PWR
VREG_L14A_1P8
VREG_S4A_1P8
VREG_L8C_1P8
VREG_L9C_2P96
VREG_L10C_3P0
VREG_L11C_3P3
VREG_L5F_2P85
VREG_L7F_1P8
MB_VREG_5P0
VREG_S8C_1P3
VBUS
VREG_L13A_3P0
VREG_L11C_3P3
VREG_L14A_1P8
MB_VREG_5P0
MB_VREG_3P3
VREG_L5F_2P85
DC_IN_12V
Figure 2. Open-Q 865XR SOM Dev Kit Block Diagram
3.4.3 Optional Accessories
Optional accessories are available for the Open-Q 865XR SOM Development Kit, like LCD Panel,
Camera adapter, and sensor board. Please visit the product store for availability of these

3: Open-Q 865XR SOM Development Kit
Open-Q 865XR SOM Development Kit User Guide 15
accessories: https://shop.intrinsyc.com/collections/accessories, or contact
[e-mail].
3.5 Getting Started
This section explains how to setup the Open-Q 865XR SOM Development Kit and start using it.
3.5.1 Registration
To register the development kit and gain access to the Intrinsyc Technical Document Portal, please visit:
http://tech.intrinsyc.com/account/register.
To proceed with registration, the development kit serial number is required. These serial numbers can be
found on the labels that are present on the SOM and carrier boards. The labels contain the following
information:
•SOM: Serial Number, WIFI MAC address
•Carrier: Serial Number
Note: Please retain the SOM and carrier board serial numbers for warranty purposes.
Refer to http://tech.intrinsyc.com/account/serialnumber for more details about locating the development
kit serial number.
3.5.2 Configuration Switch Settings
The default configuration for the system configuration DIP switch S2500 is for all switches to be open or
OFF and Header J2500 is open. For details about other configurations, see section 3.7.2.
3.5.3 Powering Up the Development Kit
The development kit can be powered up by either using a DC power supply or by connecting a battery on
connector J300. Select the desired power source using the switch S300 on the carrier board. The green
LED DS2404 marked “POWER” on the board is the power LED and should glow once the development
kit is powered. To see the debug logs, connect a serial debug cable to the J1500 connector.
To power-up the board, perform the following exact steps below detailed below:
1. At a static-safe workstation, remove the development kit board carefully from the anti-static bag.
2. Connect the Power Adapter to the 12V DC Jack J400 and then press and hold the power button
until you see the company logo appears on the on-board display (~3 seconds).
3. Navigate using the touchscreen on the on-board display.

3: Open-Q 865XR SOM Development Kit
Open-Q 865XR SOM Development Kit User Guide 16
3.6 Open-Q 865XR SOM
The Open-Q 865XR SOM contains the core 865 architecture. Measuring in at 50mm x 29mm, the SOM is
where all the processing occurs. It is connected to the carrier board via two 100 pin and one 120 pin
Hirose DF40 connectors which allows essential power rails and signals to be exposed for supporting
other peripherals and interfaces on the platform.
For detailed information about the Open-Q 865XR SOM, see the datasheet noted as reference document
R-1.
3.7 Open-Q 865XR SOM Carrier Board
The Open-Q 865XR SOM Carrier board is a Mini-ITX form factor board with various connectors used for
connecting different peripherals. The table and sections below provide in depth information on the carrier
board properties, user interfaces, connectors, and expansion headers found on the carrier board. This
information is important for users wishing to connect other external hardware devices to the Open-Q
865XR SOM Development Kit. Users must ensure that before connecting any hardware device to the
development kit, that it is compatible with the Open-Q 865XR hardware specifications. See Figure 1 for
position on carrier board.
Table 2. Carrier Board Features
Item
Position
Description
Specification
Usage
Form Factor
Dimensions: 170mm x 170mm
Mini-ITX Form Factor
SOM Interface
33
2 x 100-pin Hirose DF40
connectors
1 x 120-pin Hirose DF40
connector
SOM power and signal IO
connection to carrier
board.
The Open-Q 865XR
SOM connects to the
carrier board through
this interface.
Power
1
AC / Barrel charger
12 V DC Power Supply
Power Supply
Power
3
Battery connector for single cell
lithium battery
Input power option
Debug Serial via
USB
12
Debug Serial UART console
over USB for development
USB Micro B connector
Development Serial
Connector for debug
output via USB
Buttons
7
General Purpose SW button
SMD Button
Additional button for
general purpose
7
Power Button
SMD Button
Power Button for
Suspend / Resume and
Power off
Volume Keys
7
Volume + key
SMD Button
Volume +Key
7
Volume – key
SMD Button
Volume – Key

3: Open-Q 865XR SOM Development Kit
Open-Q 865XR SOM Development Kit User Guide 17
Item
Position
Description
Specification
Usage
Sensor Connector
21
24 pin Sensor Expansion
Connector
Available via Lantronix
optional accessories kit
Digital IO Expansion
Header
23
Exposes general purpose IO for
user development
Audio Headset Jack
8
Audio Headset Jack
Audio Headset
Audio Inputs
Expansion
27
Audio Inputs Header
3 Analog Differential
Inputs, 3 PDM Input
Interfaces with phantom
power
Microphones
Audio Outputs
Expansion
26
Audio Outputs Header
2 Line outputs, 1
earphone amplifier
output, 1 Soundwire
interface
Amplifiers
Audio I/O
10
Audio I/O headers
3 x I2S, 1x Analog
Differential Input
Various audio I/O
functions
UART header
9
3 pin header
1.8V UART debug header
UART debug
Micro SD (on
bottom)
22
Micro SD card
4bit Micro SD card
support
External Storage
USB Type C
11
USB 3.1 type C connector
For USB debugging and
client / host mode
USB Type A
5
Female Type A
Connector
USB 3.1 Host interface
WLAN Antennas
13, 14
2 PCB Antennas
Coax connection to SOM
WiFi module
Coin Cell Holder
30
Coin Cell battery holder
provided
for PMIC RTC
LEDs
36/41/42
Six LEDs
Three user driven LEDs
LCD Display and
Touch connector
38
100 pin for LCD signals
2x 4-lane MIPI DSI
MIPI Alliance
Specification for DPHY
v1.2
For connecting display
accessory
CSI Camera
connectors
15, 16, 17
3x camera connectors
MIPI Alliance
Specification for CSI-2
v1.3
For connecting camera
accessories.
Camera option
header
18,19,20
4 pin header
Camera option header
Not connector anywhere
else on the CB and is
expected to be
connected via wires to
other GPIO headers on
the dev kit if desired to

3: Open-Q 865XR SOM Development Kit
Open-Q 865XR SOM Development Kit User Guide 18
Item
Position
Description
Specification
Usage
be used by the dev kit
user.
Current Sense
Header (VPH_PWR)
35
3 pin header
Sense lines connected
across 0.005 Ohm
resistor
To measure current
consumption of
SOM_VPH_PWR
Current Sense
Header
(SOM_SYS_PWR)
39
3 pin header
Sense lines connected
across 0.005 Ohm
resistor
To measure current
consumption of
SOM_SYS_PWR
M.2 PCI Express
Connector (on
bottom)
24
M.2 PCI Express for external
peripheral connectivity
M.2 PCI Express B-Key
interface.
For external M.2 PCIe
card
WWAN SIM Card
(on bottom)
25
WWAN SIM card connector
(optional)
For WWAN M.2 PCI
express cards
3.7.1 SOM Board to Board Connectors (33)
The Open-Q 865XR SOM connects to the carrier board via two 100 pin and one 120 pin Hirose DF40
connectors which allows essential power rails and signals to be exposed for supporting other peripherals
and interfaces on the platform. For the list of signals exposed by the SOM, see the device specification
(Ref. R-1).
3.7.2 Boot Configuration DIP Switch S2500 (37)
There is a DIP switch S2500 and one 2pins header on the top side of the Open-Q 865XR SOM carrier
board. The 2-bit switch allows the user to control the system configuration and boot options. The 2pins
header is for Force USB Boot mode select. The image below shows the DIP switch and header
assignments.
Figure 3. DIP switch assignments
See the table below for a description of the DIP switch and header connections.

3: Open-Q 865XR SOM Development Kit
Open-Q 865XR SOM Development Kit User Guide 19
Table 3. Boot Configuration DIP Switch & Header Settings
Function
DIP Switch/Header
Description
Notes
BOOT_CONFIG[1] S2600-1
CPU boot configuration bit
1. Connected to CPU
GPIO27
For default boot
configuration, leave open /
OFF. Other boot
configurations not
supported.
CBL_PWR_N S2500-2
Controls the auto boot of
the SOM when power is
applied.
Default configuration is
open / OFF. To enable
auto boot of the SOM
when power is applied,
set switch closed / ON.
FORCED_USB_BOOT J2500
For factory mode
programming. Connected
to CPU GPIO132.
For Lantronix use only.
Leave open.
3.7.3 Input Power Selection
The development kit can be powered using either external DC power supply or by using a battery. The
input power source selection is performed by using the connectors and selection switches shown in the
figure and subsections below.
Figure 4. Input Power Selection Locations

3: Open-Q 865XR SOM Development Kit
Open-Q 865XR SOM Development Kit User Guide 20
3.7.3.1 Input Power Selection Switch S300 (2)
The S300 switch shown in the figure above is used to select the power source. To select the external DC
power supply as the power source, slide the switch towards the ‘12V’ position. To power up the kit using
the battery, slide the switch towards the ‘BATT’ position. The default position is ‘12V’.
3.7.3.2 Battery ID and Thermistor Configuration DIP Switch S301 (4)
The 2-position DIP switch S301 shown in the figure above configures the battery ID and thermistor
settings. The table below describes the settings for the battery ID / thermistor DIP switch.
Table 4. Battery ID / Thermistor Configuration DIP Switch Settings
Function
DIP
Switch
Description
Notes
BATTERY THERMISTOR S301-1
Selects whether or not a 100K ohm
thermistor is attached to the battery
connector J300.
For DC powered dev kit, set switch to
closed / ON (default). This enables
the use of the ‘fake’ 100K thermistor
on the carrier board.
For battery powered dev kit, set
switch to open / OFF if thermistor is
included on the battery pack.
Otherwise keep switch closed / ON.
BATTERY ID S301-2
Informs the 865XR SOM whether a
valid battery is connected. The setting is
used as input to enable or disable
battery charging.
For DC power dev kit, set switch to
closed / ON (default) to disable
battery charging.
For battery power dev kit, set switch
to open / OFF to enable battery
charging.
3.7.3.3 DC Power Input Jack J400 (1)
For a DC powered Open-Q 865XR SOM Development Kit, the DC power input jack J400 (see location in
figure above) is used to connect to the include +12V DC power supply. The 865XR carrier board includes
circuitry to convert the +12V input into different voltage rails that are needed by 865XR SOM and carrier
board peripherals.
3.7.3.4 Battery Connector J300 (3)
For a battery powered Open-Q 865XR SOM Development Kit, the battery connector J300 (see location in
figure above) is used for connection to the battery. The table below describes the pinout of the battery
connector. For more information on powering the development kit from a battery, including selecting a
battery pack, see reference document R-6.