Avnet MaaXBoard EM-MC-SBC-IMX8M Instructions for use

MaaXBoard
(EM-MC-SBC-IMX8M)
Hardware User Manual
V1.2

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Copyright Statement:
The MaaXBoard single board computer (partnumber: EM-MC-SBC-IMX8M) and its related
intellectual property are owned by Avnet Manufacturing Services.
Avnet Manufacturing Services has the copyright of this document and reserves all rights.Any part of
the document should not be modified, distributed or duplicated in any approach and form with the
written permission issued byAvnet Manufacturing Services.
Disclaimer:
Avnet Manufacturing Services does not take warranty of any kind, either expressed or implied, as to
the program source code, software and documents provided along with the products, and including,
but not limited to, warranties of fitness for a particular purpose; The entire risk as to the quality or
performance of the program is with the user of products.
Regulatory Compliance:
MaaXBoard single board computer has passed the CE, FCC & SRRC certification.

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Revision History
Rev.
Description
Author
Date
V0.0
Initial version
Hugo
20190430
V1.0
Update description
Hugo
20190815
V1.1
Update block diagram, picture and
description
Hugo
20191121
V1.2
Add SRRC description
Hugo
20200527

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Catalog
Revision History ........................................................................................................................................... 3
Chapter 1 Product Overview...................................................................................................................8
1.1 Brief Introduction .................................................................................................................... 8
1.2 System Block Diagram...........................................................................................................8
1.3 Packing List............................................................................................................................9
1.4 Product Specifications............................................................................................................9
1.5 Other Customer Provide Parts.............................................................................................10
1.6 Interface Locations................................................................................................................11
1.7 Product Dimensions (mm).................................................................................................... 12
1.8 Height Distribution (mm)....................................................................................................... 13
Chapter 2 Introduction of Hardware System.........................................................................................14
2.1 MaaXBoard Hardware Installation and Start up ..................................................................14
2.1.1 Installation..................................................................................................................... 14
2.1.2 Booting Configuration.................................................................................................... 14
2.2 Details of Interfaces..............................................................................................................15
2.2.1 POWER IN.................................................................................................................... 15
2.2.2 Button............................................................................................................................16
2.2.3 HDMI............................................................................................................................. 17
2.2.4 USB Host....................................................................................................................... 19
2.2.5 RJ-45............................................................................................................................. 21
2.2.6 Camera.......................................................................................................................... 23
2.2.7 40 Pin Expansion Pin Header.......................................................................................26
2.2.8 Wi-Fi/Bluetooth (Optional)............................................................................................. 30
2.2.9 Micro SD Card (TF Card)..............................................................................................32

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2.2.10 Extend Interface J26.....................................................................................................34
2.2.11 Extend Interface J23.....................................................................................................36
2.2.12 MIPI-DSI........................................................................................................................ 37
2.3 Introduction of Peripheral Chips...........................................................................................40
2.3.1 AR8035 .........................................................................................................................40
2.3.2 BD71837 .......................................................................................................................40
2.3.3 AW-CM256SM ..............................................................................................................40
Chapter 3 Appendix...............................................................................................................................41
3.1 Software................................................................................................................................ 41
Chapter 4 Technical Support and Warranty.......................................................................................... 42
4.1 Technical Support.................................................................................................................42
4.2 Warranty Conditions............................................................................................................. 42
Chapter 5 Contact Information.............................................................................................................. 44

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Figure
Figure 1.1 MaaXBoard System Block Diagram....................................................................................8
Figure 1.2 MaaXBoard Top View.........................................................................................................11
Figure 1.3 MaaXBoard Bottom View ...................................................................................................11
Figure 1.4 Product Dimensions ..........................................................................................................12
Figure 1.5 Height Distribution.............................................................................................................13
Figure 2.1 USB Type C Slot ...............................................................................................................15
Figure 2.2 Button................................................................................................................................. 16
Figure 2.3 HDMI Connector................................................................................................................17
Figure 2.4 Double-layer USB Host connector ....................................................................................19
Figure 2.5 RJ45 Connector.................................................................................................................21
Figure 2.6 Camera Connector............................................................................................................ 23
Figure 2.7 2.54mm Double Row Pin Header...................................................................................... 26
Figure 2.8 40Pin Pin Header Pin1 Position........................................................................................27
Figure 2.9 IPEX Antenna Connector .................................................................................................. 30
Figure 2.10 Onboard Ceramic Antenna.............................................................................................. 31
Figure 2.11 Micro SD Card Slot..........................................................................................................32
Figure 2.12 12Pin Wafer Connector................................................................................................... 34
Figure 2.13 12Pin Wafer Connector................................................................................................... 36
Figure 2.14 30 Pin FPC Connector (MIPI-DSI) .................................................................................. 37

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Table
Table 2.1 HDMI Pin Definitions........................................................................................................... 18
Table 2.2 USB Interface Pin Definition ...............................................................................................20
Table 2.3 Ethernet Interface Pin Definition......................................................................................... 22
Table 2.4 Camera Connector Pin Definition ....................................................................................... 24
Table 2.5 40 Pin Expansion Pin Header Definition.............................................................................27
Table 2.6 Antenna Connector Pin Definition.......................................................................................30
Table 2.7 Micro SD Card Slot Pin Definition....................................................................................... 33
Table 2.8 12Pin Definition...................................................................................................................35
Table 2.9 J23 Pin Definition................................................................................................................36
Table 2.10 J16 Pin Definition..............................................................................................................38

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Chapter 1 Product Overview
1.1 Brief Introduction
MaaXBoard is a development board for makers, designed by Avnet Manufacturing Services. The
MaaXBoard is a single board computer based on NXP IMX8M SOC series, which can be used for the
areas such as medical instruments, video surveillance, communications, IOT, makers and so on.
In the design of a compact body size, it is provided with rich resources of peripheral interface, include:
Gigabit Ethernet interface, USB 3.0 interface, MIPI-DSI interface, MIPI-CSI interface, HDMI interface,
Micro SD Card interface, UART interface, GPIO interface, Wi-Fi/Bluetooth interface, etc.
1.2 System Block Diagram
I.MX8M
BD71837MWV
5V
32 bits
8 bits
4 bits
ETHERNET
AR8035
USB3.0
PWR_EN USB
SWITCH
HDMI
MIPI CSI
SDIO
PCM
UART
GPIO
MIPI DSI
5V
USB
TypeC
POWER
TF CARD
eMMC
WiFi/BTAntenna
EXP
CON
RGMII RJ45
USB3.0
Double-Deck
HDMI
CON
MIPI CSI
CON
MIPI DSI
CON
I2C1
I2C1
I2C4
1.00mm
Wafer
SAI1
SPI
UART2、UART3
I2C2、I2C3
SAI2
32.768KHz
27MHz27MHz25MHz
25MHz
37.4MHz
2*1GB
DDR4 USB3.0
Figure 1.1 MaaXBoard System Block Diagram

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1.3 Packing List
1 ×MaaXBoard
1 ×Desiccant
1 ×Anti-static Bag
1 ×Safety Flyer
1 ×Quick Start Guide
2 ×Electrostatic Foam
1 ×Box
1.4 Product Specifications
General Specifications:
Operating Temperature: 0~70°C (When the CPU loads heavy, need a heatsink)
Power Supply: 5V/3A (Power Adapter)
Operating Humidity: 20% ~ 90% (non-condensing)
Dimensions: 85mm × 55mm
PCB Layers：10Layers
Communication Interface:
1 × 40 Pin IO Interface (Expand I2C, SPI, UART, I2S Interface)
1 ×MIPI-CSI Camera Interface
1 × MIPI-DSI Display Interface
1 ×Gigabit Ethernet interface (RJ45)
2 ×USB3.0 Host
1 ×Micro SD Card (TF Card) Interface
1 ×8bits and 1x 7bits GPIO Interface (Support Audio peripheral expand)
1 ×HDMI 2.0 Interface
1 ×Power Interface (USB Type C Connector)
1 ×Power Button
2 ×User Button
1 ×Wi-Fi/Bluetooth
2 × User LED

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1.5 Other Customer Provide Parts
To use the various functions of MaaXBoard, customer should also provide the following parts which are
not contained in MaaXBoard Packages.
1 ×USB to serial cable (TTL)
1 ×1Gbps Network Cable
1 ×Camera Module
1 ×MIPI-DSI Displayer
1 ×5V/3A Power Supply (USB Type C Interface)
1 ×HDMI Cable
1 ×HDMI Displayer
Other tools needed to implement related function

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1.6 Interface Locations
Figure 1.2 MaaXBoard Top View
Figure 1.3 MaaXBoard Bottom View

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1.7 Product Dimensions (mm)
Figure 1.4 Product Dimensions

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1.8 Height Distribution (mm)
Figure 1.5 Height Distribution
Note: There is tolerance in height due to mechanical treatment.

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Chapter 2 Introduction of Hardware System
This chapter will introduce the structure, expansion and peripheral interfaces of MaaXBoard hardware
system in details.
2.1 MaaXBoard Hardware Installation and Start up
2.1.1 Installation
Before power up MaaXBoard, you need to connect all necessary peripheral devices, then power on the
board.
2.1.2 Booting Configuration
According to the manufactured configuration, MaaXBoard supports two boot mode: boot from Micro SD
card or boot from eMMC. These two boot mode is mutual exclusion. If users choose to boot from Micro
SD card, they should burn the latest image to the card on PC, then install the card to the board, refer to
the software user manual. If users choose to boot from eMMC, just power on the board.
Note: If the eMMC firmware is destroyed by accident, users could update the eMMC image in USB
Download mode. Please operate carefully and follow the steps in software user manual strictly to avoid
damaging the product.

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2.2 Details of Interfaces
This section will introduce the constructions, principles, interface definitions and considerations of use of
MaaXBoard peripherals in detail, so that users may have a deep understanding of the hardware circuitry
of the board.
2.2.1 POWER IN
MaaXBoard use a USB Type C interface as the +5V power in. Note that the USB Type C interface only
provides power supply function, do not support data communication.
The Power adapter should support 3A or above current output.
Figure 2.1 USB Type C Slot

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2.2.2 Button
There are 3 buttons on the MaaXBoard, S2 as the system power button for the board, S3 and S4 as user
button.
Figure 2.2 Button

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2.2.3 HDMI
Powerful video display is an important feature of MaaXBoard. The HDMI 2.0 interface support up to 4096
x 2160 at 60Hz display output.
J9 is the interface for connecting an HDMI display device on the MaaXBoard, which is a standard HDMI
19Pin connector. Its specification and dimension as follows:
Figure 2.3 HDMI Connector

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Table 2.1 HDMI Pin Definitions
HDMI(J9)
Pin
Signal Name
Ball
Description
Signal Type
1
HDMI_TX2+
K4
HDMI data 2 differential positive
Differential Data
2
GND
Ground
3
HDMI_TX2-
K3
HDMI data 2 differential negative
Differential Data
4
HDMI_TX1+
J4
HDMI data 1 differential positive
Differential Data
5
GND
Ground
6
HDMI_TX1-
J3
HDMI data 1 differential negative
Differential Data
7
HDMI_TX0+
K6
HDMI data 0 differential positive
Differential Data
8
GND
Ground
9
HDMI_TX0-
K5
HDMI data 0 differential negative
Differential Data
10
HDMI_CLK+
J6
HDMI clock differential positive
Differential Data
11
GND
Ground
12
HDMI_CLK-
J5
HDMI clock differential negative
Differential Data
13
HDMI_CEC
W4
HDMI consumer electronic control
IO
14
NC
No Connection
15
HDMICONN_I2CSCL
U5
HDMI display data channel clock
IO
16
HDMICONN_I2CSDA
T7
HDMI display data channel data
17
GND
Ground
Ground
18
5V_VDD
Power
19
HDMICONN_HPLG
K1
HDMI display hot plug detect
IO
20
GND_SHELDS
Ground
21
GND_SHELDS
22
GND_SHELDS
23
GND_SHELDS

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2.2.4 USB Host
MaaXBoard provides a Double-layer USB Host connector (J5), the two USB port are two independent
controllers, and each one could provide full speed USB3.0 data communication function, used to extend
external devices in USB protocol.
Figure 2.4 Double-layer USB Host connector

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Table 2.2 USB Interface Pin Definition
USB Connector(J5)
Pin
Signal Name
Ball
Description
Signal Type
1
VBUS1
D14
Power
2
USB1_HOST_DN
B14
USB1 PHY USB2.0 differential signal pair negative
Differential signal
3
USB1_HOST_DP
A14
USB1 PHY USB2.0 differential signal pair positive
4
GND
Ground
5
USB1_HOST_RXN
B12
USB1 PHY USB3.0 received differential signal pair
negative
Differential signal
6
USB1_HOST_RXP
A12
USB1 PHY USB3.0 received differential signal pair
positive
7
GND
Ground
8
USB1_HOST_TXN
B13
USB1 PHY USB3.0 transmit differential signal pair
negative
Differential signal
9
USB1_HOST_TXP
A13
USB1 PHY USB3.0 transmit differential signal pair
positive
10
VBUS2
D9
Power
11
USB2_HOST_DN
B10
USB2 PHY USB2.0 differential signal pair negative
Differential signal
12
USB2_HOST_DP
A10
USB2 PHY USB2.0 differential signal pair positive
13
GND
Ground
14
USB2_HOST_RXN
B8
USB2 PHY USB3.0 received differential signal pair
negative
Differential signal
15
USB2_HOST_RXP
A8
USB2 PHY USB3.0 received differential signal pair
positive
16
GND
Ground
17
USB2_HOST_TXN
B9
USB2 PHY USB3.0 transmit differential signal pair
negative
Differential signal
18
USB2_HOST_TXP
A9
USB2 PHY USB3.0 transmit differential signal pair
positive
Differential signal
S1
Case Earth
Earth Ground