AXIOMTEK SCM180 Instructions for use

SCM180 and SCB180
Freescale i.MX8M Series ARM-based
SMARC System-on-Module and
Baseboard
Hardware User’s Manual

ii
Disclaimers
This manual has been carefully checked and believed to contain accurate information.
Axiomtek Co., Ltd. assumes no responsibility for any infringements of patents or any third
party’s rights, and any liability arising from such use.
Axiomtek does not warrant or assume any legal liability or responsibility for the accuracy,
completeness or usefulness of any information in this document. Axiomtek does not make any
commitment to update the information in this manual.
Axiomtek reserves the right to change or revise this document and/or product at any time
without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted, in
any form or by any means, electronic, mechanical, photocopying, recording, or otherwise,
without the prior written permission of Axiomtek Co., Ltd.
CAUTION
If you replace wrong batteries, it causes the danger of explosion. It is recommended by the
manufacturer that you follow the manufacturer’s instructions to only replace the same or
equivalent type of battery, and dispose of used ones.
Copyright 2020 Axiomtek Co., Ltd.
All Rights Reserved
March 2020, Version A1
Printed in Taiwan

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ESD Precautions
Computer boards have integrated circuits sensitive to static electricity. To prevent chipsets
from electrostatic discharge damage, please take care of the following jobs with precautions:
Do not remove boards or integrated circuits from their anti-static packaging until you are
ready to install them.
Before holding the board or integrated circuit, touch an unpainted portion of the system
unit chassis for a few seconds. It discharges static electricity from your body.
Wear a wrist-grounding strap, available from most electronic component stores, when
handling boards and components.
Trademarks Acknowledgments
Axiomtek is a trademark of Axiomtek Co., Ltd.
IBM, PC/AT, PS/2, VGA are trademarks of International Business Machines Corporation.
ARM is a trademark of ARM Ltd.
Other brand names and trademarks are the properties and registered brands of their
respective owners.

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Table of Contents
Disclaimers.....................................................................................................ii
ESD Precautions...........................................................................................iii
Chapter 1 Introduction............................................. 1
1.2 Specifications......................................................................................2
Chapter 2 Board and Pin Assignments.................... 5
2.1 Board Dimensions and Fixing Holes.................................................5
2.2 Board Layout.......................................................................................6
2.3Installing Heatsink & Heatspreader ...................................................7
2.3.1 Heatspreader............................................................................................... 7
2.3.2 Heatsink & Heatspreader............................................................................ 7
2.4Switch Settings ...................................................................................8
2.4.1 Boot Mode Selection (SW1)........................................................................ 8
2.4.2 Switch (SW2)............................................................................................... 8
Chapter 3 SCB120 Baseboard.................................. 9
3.1 SCB180 Specifications .......................................................................9
3.2 SCB180 Dimensions and Fixing Holes............................................10
3.3 SCB180 Board Layout.......................................................................11
3.4 Jumper setting ..................................................................................12
3.4.1 LVDS Voltage Selection (JP1)................................................................... 12
3.4.2 Boot Mode Selection (JP11)...................................................................... 12
3.4.3 Touch Panel Wire Selection (JP14)........................................................... 13
3.5Connectors........................................................................................14
3.5.1 LVDS Connector (CN1)............................................................................. 15
3.5.2 CAN Interface Connectors (CN2).............................................................. 15
3.5.3 COM1 Box Header (CN3) ......................................................................... 16
3.5.4 GPIO I2C SPI Male Connector (CN4)....................................................... 16
3.5.5 Inverter Connector (CN5).......................................................................... 16
3.5.6 CSI 44pin Connector (CN6) ...................................................................... 17
3.5.7 CSI 44pin Connector (CN7) ...................................................................... 17
3.5.8 MXM Connector (CN8).............................................................................. 18
3.5.9 USB 2.0 Wafer Connector (CN9).............................................................. 22
3.5.10 HDMI Connector (CN11)........................................................................... 22
3.5.11 COM2 Connector (CN12B) ....................................................................... 22
3.5.12 COM3 Connector (CN12A) ....................................................................... 23
3.5.13 USB 3.0 Double Deck Port (CN13)........................................................... 23

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3.5.14 RJ45 Connector (CN14)............................................................................ 23
3.5.15 Mini USB OTG Port Host/Device Connector (CN15)................................ 24
3.5.16 DC Jack Power Connector (CN17)........................................................... 24
3.5.17 Audio Headphone Jack (J1)...................................................................... 24
3.5.18 SD Card Connector (SCN1)...................................................................... 24
3.5.19 Full Size Mini Card Socket (SCN2)........................................................... 25
3.5.20 Half Size Mini Card Socket (SCN3) .......................................................... 26
3.5.21 SIM Card Slot (SCN4)............................................................................... 26
3.5.22 Power On/Off Switch (SW3)...................................................................... 27
3.5.23 Reset Button (SW4) .................................................................................. 27

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SCM180 & SCB180 Freescale i.MX8M ARM-based System-on-Module
Introduction 1
Chapter 1
Introduction
The SCM180 is a new SMARC v2.0 module to support Freescale i.MX8M series Dual or Quad
A53 Core SoCs.
It integrates onboard system memory, storage as eMMC, TTL LCD, Audio, USB Host/Client,
UARTs, CANBus 2.0B, and various I/O features. Taking the low power consumption
advantages of ARM RISC architecture, the SCM180 is extremely suitable to be deployed in
the deeply embedded applications such as HMI, video streaming, data logger, extended
temperature embedded controllers, etc.

SCM180 Freescale i.MX8M ARM-based System-on-Module
2 Introduction
1.1 Features
Onboard LPDDR4 memory 2GB supports up to 4GB capacity
Onboard 8GB eMMC flash as booting device, up to 64GB
Two USB 3.0, One USB 2.0 and One USB OTG
One 10/100/1000 Base-T Ethernet
HDMI 2.0a up to 4K Max Resolution: 3840 x 2160
MIPI DSI or Dual LVDS
MIPI CSI
CAN 2.0
I²S Audio
1.2 Specifications
CPU
Freescale i.MX8M series SoC; Dual and Quad Options
Arm®Cortex®-A53 up to 1.5GHz and Cortex-M4
256KB integrated low power on-chip SRAM.
128KB on-chip boot ROM.
System Memory
Onboard LPDDR4 2GB/4GB RAM
USB Interface
Two USB 3.0, One USB 2.0 and One USB 2.0 OTG
Storage Interface
One eMMC NAND flash chip on module; default is 8GB, up to 64GB
One SD Card socket on baseboard.
Display
Two LVDS channels, connectivity to displays with LVDS interface.
One HDMI with up to 3840×2160 resolution.
Ethernet
One 10/100/1000 Base-T Compatible with IEEE std 802.3.
Audio
I²S Audio
Serial Port
Two RS-232, with 4-wire(TX/RX/RTS/CTS) via SMARC MXM interface
One UART (TX/RX) via SMARC MXM interface
One UART On-Module Debug Connector, (Pin 1: TX, Pin 2: RX, Pin 3: GND)
CANBus
Two 2.0B protocol-compatible Controller Area Network (CAN) via SMARC MXM
interface
Camera sensors
2 MIPI CSI-2(One 4 lanes, other 2 lanes)
I2C
Three I2C Buses

SCM180 & SCB180 Freescale i.MX8M ARM-based System-on-Module
Introduction 3
PCIe
2 x PCIe
SPI
1 x QSPI with 2 chip select; 1 x SPI with 2 chip select
GPIO
12 GPIO interfaces (up to 400kbps) via SMARC MXM interface
Power
3V –5.25V DC-in.
Form Factor
82mm x50mm
Thickness as 1.2mm ± 0.1mm.
SMARC Hardware Specification v2.0.
Environments
Operating temperature: -40 ~ 85ºC (Industrial); -20 ~70ºC (Commercial)
Operating humidity: 10% RH ~ 85% RH relative humidity, non-condensing.
Note: All specifications and images are subject to change without notice.

SCM180 Freescale i.MX8M ARM-based System-on-Module
4 Introduction
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SCM180 & SCB180 Freescale i.MX8M ARM-based System-on-Module
Board and Pin Assignments 5
Chapter 2
Board and Pin Assignments
2.1 Board Dimensions and Fixing Holes
Top View
Bottom View

SCM180 Freescale i.MX8M ARM-based System-on-Module
6 Board and Pin Assignments
2.2 Board Layout
Top View
Bottom View

SCM180 & SCB180 Freescale i.MX8M ARM-based System-on-Module
Board and Pin Assignments 7
2.3Installing Heatsink & Heatspreader
For thermal dissipation, the heatsink & heatspreader enable the SCM180 components to
dissipate heat efficiently. All heat generating components are thermally conducted to the
heatsink or heatspreader in order to avoid hot spots. Below procedures illustrate how to install
the heatsink and heatspreader on SCM180.
2.3.1 Heatspreader
1. The heatspreader is designed for the SCM180 module. The thermal pad on the
heatspreader is designed to make contact with the necessary components on the
SCM180 module. When mounting the heatspreader you must make sure that the
thermal pads on the heatspreader make complete contact (no space between
thermal pad and component) with the corresponding components on the SCM180
module. This is especially critical for SCM180 module that is with high CPU speed to
ensure that the heat spreader acts as a proper thermal interface for cooling
solutions.
2. This CPU module has four assembly holes for installing heat spreader plate. Use the
four screws to secure the heat spreader plate to the SCM180. Be careful not to
over-tighten the screws.
2.3.2 Heatsink & Heatspreader
1. The heatsink is designed to work with heatspreader for SCM180 module. Before
installing the heatsink to the CPU module, please ensure that the heatspreader is
installed and then secure fore screws onto heatspreader.

SCM180 Freescale i.MX8M ARM-based System-on-Module
8 Board and Pin Assignments
2.4 Switch Settings
2.4.1 Boot Mode Selection (SW1)
Boot from Fuses:
Similar to Internal Boot mode with one difference: GPIO boot override pins are ignored.
Serial Downloader:
Provides a means to download a program image to the chip over USB serial connection.
2.4.2 Switch (SW2)
SCM180 jumpers are for Carrier Board
Function
SW1 (1)
SW1 (2)
Boot Type
0
0
Boot from Fuses
0
1
Serial Downloader
Default
1
0
Internal Boot (Development)
1
1
Reserved
Function
Setting
Depend on base board (Default)
SW2 (1,2,3,4) OFF

SCM180 & SCB180 Freescale i.MX8M ARM-based System-on-Module
SCB180 Baseboard 9
Chapter 3
SCB120 Baseboard
The SCB180 is a baseboard for SCM180 SoM. Connect this baseboard properly of SCM180.
Its specifications and detailed information are given in this chapter.
3.1 SCB180 Specifications
Size
210mm x 150mm
Features
Support Audio jack (Line Out).
One SDHC Card socket.
One USB 2.0 Host and one OTG for Client.
Two RJ-45 interfaces, 1000-Mbps Ethernet MAC integrated in iMX6 and PHY as
Atheros AR8031, the other one for 10/100 Base-T with AX88772B.
Serial Ports: Four RS-232 4-wire 3.3V TTL
Two CAN Bus with 2.0B protocol compliant.
HDMI 1.4
SATA 2.0
Dual Channel LVDS 24bit
1 x TTL 24bit
Extension connector with 1 x RS-232 (4-wire),2 x I2C (up to 400 kbps),1 x SPI (2
chip select)
User buttons for keypad and reset button.
Power
+12V ± 5% DC-in
Note: All specifications and images are subject to change without notice.

SCM180 Freescale i.MX8M ARM-based System-on-Module
10 Q7B120 Baseboard
3.2 SCB180 Dimensions and Fixing Holes
Top View
Bottom View

SCM180 & SCB180 Freescale i.MX8M ARM-based System-on-Module
SCB180 Baseboard 11
3.3 SCB180 Board Layout
Top View
Bottom View

SCM180 Freescale i.MX8M ARM-based System-on-Module
12 Q7B120 Baseboard
3.4 Jumper setting
Jumper is a small component consisting of jumper clip and jumper pins. Install jumper clip on 2
jumper pins to close. And remove jumper clip from 2 jumper pins to open. The following
illustration shows how to set up jumper.
3.4.1 LVDS Voltage Selection (JP1)
The board supports voltage selection for flat panel displays. JP1 is used to set LVDS
connector (CN5) pin 1~6 LCD_PWR to +3.3V or +5V or +12V voltage level.
3.4.2 Boot Mode Selection (JP11)
These jumpers are for boot mode selection.
Function
JP1 Setting
+3.3V level (Default)
1-2 close
+5V level
3-4 close
+12V level
5-6 close
Function
Setting
SCB180 SATA
1-2 Open
3-4 Open
5-6 Open
SCB180 SD Card
1-2 Open
3-4 Close
5-6 Close
SCM180 SD eMMC
1-2 Close
3-4 Open
5-6 Open

SCM180 & SCB180 Freescale i.MX8M ARM-based System-on-Module
SCB180 Baseboard 13
3.4.3 Touch Panel Wire Selection (JP14)
Pin Assignment:
Function
JP14 Setting
4 Wire
5 –6 Close
5 Wire
5 –6 Open
Pin
Signal
4-Wire
5-Wire
1
TS_XN
Left
LL (L)
2
TS_XP
Right
LR (X)
3
TS_YP
Bottom
UR (H)
4
GND
5
TS_YN
Top
UL (Y)
6
SENSE
Sense

SCM180 Freescale i.MX8M ARM-based System-on-Module
14 Q7B120 Baseboard
3.5 Connectors
Signals go to other parts of the system through connectors. Loose or improper connection
might cause problems, please make sure all connectors are properly and firmly connected.
Here is a summary table which shows all connectors on the hardware.
Connector
Description
CN1
LVDS Connector - Top Side
CN2
2 x CAN 10P Internal Connector - Top Side
CN3
10P x 2 RS232 Internal Connector - Top Side
CN4
20P GPIO I2C SPI Male Connector - Top Side
CN5
LVDS Power, Backlight Connector - Top Side
CN6
CSI 44 Pin Connector - Top Side
CN7
CSI 30 Pin Connector - Top Side
CN8
SMARC 314P Connector - Top Side
CN9
USB 2.0 Internal Connector -Top Side
CN11
Upside HDMI Connector - I/O Side
CN12A
RS232 DB9 Connector - I/O Side
CN12B
RS232 DB9 Connector - I/O Side
CN13
USB 3.0 Double Deck -I/O Side
CN14
RJ45 Connector - I/O Side
CN15
USB OTG - I/O Side
CN17
Barrel Power Connector (CN21 Colay) -I/O Side
J1
Audio Line Out - I/O Side
SCN1
SD Connector - Bottom Side
SCN2
Mini PCIe Full Size Connector - Bottom Side
SCN3
Mini PCIe Half Size Connector - Bottom Side
SCN4
SIM Card Connector - Bottom Side
SW3
Power ON/OFF Switch - Top -Side
SW4
Power Reset Switch - Top Side