i.MX 8M Mini LPDDR4 EVK Board Hardware
User's Guide
1. Introduction
This document is the hardware User’s Guide for the
i.MX 8M Mini LPDDR4 Evaluation Kit (EVK) based
on the NXP Semiconductor’s i.MX 8M Mini
Applications Processor. This board is fully supported by
NXP Semiconductor. This manual includes system
setup and configurations, and provides detailed
information on the overall design and usage of the EVK
board from a hardware system perspective.
1.1.
Board overview
The LPDDR4 EVK board is a platform designed to
show the most commonly used features of the i.MX 8M
Mini Applications Processor in a small and low cost
package. The i.MX 8M Mini LPDDR4 EVK board is an
entry level development board, which helps developers
get familiar with the processor before investing a large
amount of resources in more specific designs.
X2 USB (2.0) Type-C connector, only Port2 could be used as the Power Input
Wi-Fi/Bluetooth
x1 on board Wi-Fi/Bluetooth module, 802.11b/g/n/ac, BT4.1
3.5 mm Stereo Line output, 2Vrms
FPC connector (SAI ports) for Audio Card
JTAG (10pin header)
MicroUSB for UART debug, two COM Ports for A53 and A4
M.2 connector
x1 M.2 slot (KEY-E type), support PCIE2.0, I2C interfaces
Expansion connector
40-pin dual-row Pin Header for I2S, UART, I2C and GPIO expansion
I2C connector
8-pin dual-row Pin Header for I2C expansion
Buttons
ON/OFF, RESET
LED indicators
Power status, UART
8MMINILPD4-CPU: 2inch x 2inch, 8-layer
8MMINI-BB: 4inch x 4.2inch, 8-layer
Audio connectors
Debug connectors
PCB
1.2.
Board contents
The i.MX 8M Mini LPDDR4 EVK contains the following items:
• i.MX 8M Mini LPDDR4 EVK board, assembled by two separate boards, 8MMINILPD4-CPU
(SOM Board) and 8MMINI-BB (Base Board)
• IMX-MIPI-HDMI Accessory Card, MIPI-DSI to HDMI adapter board
• USB Type-C 45W Power Delivery Supply, 5V/3A, 9V/3A, 15V/3A, 20V/2.25A supported
• Mini-SAS cable, 8" mini-SAS cable
• USB Type-C Cable, Cable – Assembly, USB 3.0, Type-C Male to Type-A Male
• USB micro-B Cable, Cable – Assembly, USB 2.0, Type-A Male to Micro-B Male
• USB Type-C to A Adapter, Adapter – USB 3.0, Type-C Male to Type-A Female
• Quick Start Guide
2. Specifications
This section provides the detailed information about the electrical design and practical considerations on
the LPDDR4 EVK board. Figure 1 describes each block in the high-level block diagram of the
LPDDR4 EVK board.
Type-C Port2 is the only power supply port, and it must be always supplied for system
running.
i.MX 8M Mini EVK is not a typical use case of the PD device. It is supplied by the
PD charger only, but with a power switch. When the switch keeps OFF for more than
5.5 seconds after adapting the PD charger, the charger (Source) will repower EVK
(Sink) after the system initiates the PD software. See Section 6.5.7 in the Universal Serial Bus Power Delivery Specification Revision 2.0. There are two ways to avoid
repower:
• The power switch must always be at the ON side before adapting the PD
charger.
• Change the software to disable the PD function, and make it Type-C supply
The i.MX 8M Mini processors represent NXP Semiconductor’s latest achievement in the integrated
multimedia-focused products offering high performance processing with a high degree of functional
integration, targeted towards the growing market of connected devices. The i.MX 8M Mini processor
features NXP’s advanced implementation of the Quad Arm Cortex®-A53+ Arm Cortex®-M4 core,
which operates at speeds up to 1.8 GHz. Each processor provides a 32-bit DDR3L/DDR4/LPDDR4
memory interface and other interfaces for connecting peripherals, such as MIPI LCD, MIPI Camera,
WLAN, Bluetooth™, Ethernet, Digital Mic, GPS, and multi-sensors.
For more detailed information about the processor, see the datasheet and reference manual on
www.nxp.com/i.MX8MMINI.
2.1.
Boot Mode and Boot Device configurations
The i.MX 8M Mini Applications Processor can boot from the boot configuration selected on SW1101 or
from the boot configuration stored on the internal eFUSE. In addition, the i.MX 8M Mini can download
a program image from a USB connection when configured in serial downloader mode. The method used
to determine where the processor finds its boot information is from two dedicated BOOT MODE pins.
It is important for the developer to remember that these two pins are tied to the BOOT modules. If the
developer wants to boot the program Image from the Internal Boot mode, which means the processor
will execute the boot code from the internal boot ROM, the position of the switch 1 and 2 must be set to
OFF (0), ON (1), it is the same principle to choose the Serial Downloader mode or Boot from Fuse
mode to load boot code into the processor.
If Internal Boot mode is selected, the developer can set the switches SW1101 and SW1102 to choose the
boot device and related boot configurations as shown in Table 3 and Figure 4. Figure 5 shows the
detailed connection of SW1101 and SW1102.
BOOT Device SW1101 SW1102
NOTE
SW1101 bit 3 and bit 4 are used for compatible design with i.MX 8M
Nano, which must be set to 1 and 0 for i.MX 8M Mini.
SW1102 bit 10 is used for Infinit-Loop (Debug use only), which must be
set to 0.