NXP Semiconductors I.MX 8M User manual

Quick Start Guide

i.MX Audio Board

Quick Start Guide

ABOUT THE i.MX AUDIO BOARD

i.MX Audio Board (or

MCIMX8M-AUD

) is an excellent, configurable and functional

audio processing platform. It supports multiple i.MX 8M series processors and HDMI

card. A variety of audio input and output interfaces are integrated into the system, it

supports HDMI input, HDMI eARC, S/PDIF I/O, 2-ch ADC line-in, 24-ch DAC line-out

and so on. Based on these features, rich audio application cases can be realized.

Features

•

24-ch line out

•

2-ch line in

•

S/PDIF I/O

-TOSLINK up to 192kHz for optical

fiber cable

-RCA for coaxial cable

•

Audio in/out on HDMI card

•

eARC on HDMI card

•

eARC on i.MX 8M Plus processor

•

Micro-SD card connector

•

USB with Type-C connector

•

Ethernet

•

M.2 connector

-PCIE for i.MX 8M Plus and i.MX 8M

Mini

-SDIO for i.MX 8M Plus

•

DSI mini-SAS connector

•

USB to serial converter for debug

www.nxp.com

GET TO KNOW THE i.MX AUDIO BOARD

Figure 1: i.MX Audio Board Top View

mini-SAS

Ethernet

HDMI

Only i.MX 8M Plus

HDMI Card

12V Trigger

S/PDIF TX

S/PDIF RX

ADC 2-CH

DAC 24-CH

USB Type-C

USB Debug

Micro-SD

On/Off

Reset

Interposer Board

i.MX 8M Mini/

Nano Boot Switch

8-DMIC

Connector

DC 12V Jack

CPLD Mode Switch

ADC Parallel Jumper

DAC Parallel Jumper

Button Board

Connector

M.2 Connector

SOM Connector

Power Mode Jumper

I2C Connector

CPLD Download

S/PDIF Route

Jumper

Board ID Switch

Quick Start Guide

GETTING STARTED

Unpack the Kit

The i.MX Audio Board

is shipped with the

items listed in Table 1. E

nsure the items

are included in the

box.

Prepare Accessories

The following items in Table 2 are

recommended to run the i.MX 8M Audio

Board.

Table 2 Customer

Supplied Accessories

ITEM

DESCRIPTION

SOM Boards*

- i.MX 8M Nano SOM Board

- i.MX 8M Mini SOM Board

- i.MX 8M Plus SOM Board

HDMI Display

HDMI display that supports a

minimum resolution of

1080P60

HDMI Cable

HDMI 2.0 cable to connect the

HDMI card to HDMI display

USB Micro-B

Cable

USB Type-A Male to Micro-B Male

Coaxial Cable

RCA cable for line-in and line-out

Fiber Cable

Optical fiber cable for TOSLINK

*Note: SOM Boards from their EVK Boards. For example,

i.MX 8M Nano SOM Board from i.MX 8M Nano DDR4 EVK.

Table 1 Kit Contents

ITEM

DESCRIPTION

EVB Board

i.MX Audio board

Additional

Daughter Cards

- Interposer board

- EP HDMI card

- Button board

Power Supply

12V 5A with DC jack

Accessories

-SCREW-TY PE3 M3X5-5-S x1

-Antenna x3

Documentation

Quick Start Guide

www.nxp.com

GETTING STARTED

CONTINUED

Download Software and Tools

Installation software and documentation are available at

http://www.nxp.com/imxaudioboard.Thefollowingareavailableonthewebsite:

Table 3 Software and Tools

ITEM

DESCRIPTION

Documentation

•Schematics, layout and Gerber files

•i.MX Audio Board Hardware User’s Guide

•Quick Start Guide

Software Development

Linux BSPs, CPLD code

Demo Images

Copy of the latest Linux and Android BSP images that are available to

program on to the micro-SD Card on i.MX Audio Board

Quick Start Guide

SETTING UP THE SYSTEM

Contact Sales to get Image from

assigned link, then burn image in Micro

SD card for testing use.

Confirm

Power Supply

There are several power supply modes.

Use J2521 and J2522 set system power,

GPIO mode and 3V3 mode are recom-

mended.

MODE

J2521

J2522

GPIO mode

3-4

7-8

3V3 mode

5-6

3-4

Self-mode

1-2

CPLD mode

5-6

Confirm

SOM ID Switches

If target using i.MX 8M Mini or i.MX 8M

Nano SOM board, the interposer board

should be used. If target using i.MX 8M

Plus SOM board, the interposer board

should be removed and plug SOM board

on the i.MX Audio Board directly.

If the SOM interposer board is used, set

the ID SW1[4:1] according to the SOM

used. if interposer board not used, all

pins are pulled up by on board resistors.

SOM

SW1[4:1]

i.MX 8M Nano DDR4

0001

i.MX 8M Nano LPDDR4

0010

i.MX 8M Mini DDR4

0011

i.MX 8M Mini LPDRR4

0100

…

Reserved

i.MX 8M Plus DDR4/LPDDR4

1111

Note: 0 is on, 1 is off, x means don’t care

www.nxp.com

SETTING UP THE SYSTEM

CONTINUED

Confirm

MPU Boot Switches

The boot switches should be set to boot

from the micro-SD card. SW4[4:1] on the

i.MX Audio Board are used for i.MX 8M

Plus SOM. SW2[10:1] and SW3[10:1] on

the interposer board are used for i.MX 8M

MiniSOMandi.MX8MNanoSOMboard.

Different SOM boards have different

settings. See the table below for more

details.

i.MX 8M Plus SOM

BOOT Device

SW4[4:1]

micro-SD Card

1100

i.MX 8M Mini SOM

BOOT Device

SW2[10:1]

SW3[10:1]

micro-SD Card

01001_10110

00010_11000

i.MX 8M Nano SOM

BOOT Device

SW2[10:1]

SW3[10:1]

micro-SD Card

xxxxx_x0011

xxxxx_xxxxx

Note: 0 is off, 1 is on, x means don’t care for 3 tables

Confirm

CPLD Mode

CPLD supports many modes, The default

mode is shown in the table below.

SOM

SW2302[4:1]

SW2300 [4:1]

i.MX 8M Nano

0000

i.MX 8M Mini

0000

0001

i.MX 8M Plus

0000

Note: 0 is on, 1 is off, x means don’t care

Connect

USB Debug Cable

Connect the micro-B end of a USB cable

into debug port J23. Connect the other

end of the cable to a PC acting as a host

terminal. UART connections will appear

on the PC, then select the right COM port.

The console print will output on

“Enhanced COM port,” which can be

found in “Device Manager” of the PC.

Quick Start Guide

SETTING UP THE SYSTEM

CONTINUED

If the serial port is not recognized,

download and install updated drivers as

listed in the section Debug Serial

Console below.

Open the terminal window (i.e., Hyper

Terminal or Tera Term), choose the right

COM port number and apply the

following

configuration.

-Baud rate: 115200

-Data bits: 8

-Parity: None

-Stop bits: 1

Connect

HDMI Cable

Connect an HDMI cable to the HDMI

connector JackJ2 on HDMI card.Connect

the other end of thecable to PC with a HDMI

interface,or connecttoaBlu-ray player if don’t

require the terminal tool and only playback.

both sidesareHDMItypeA interface.This

cableisforaudiosource inthis configuration.

Connect

Power

Supply

Connect the 12V 5A power brick to

J2000

power up the board using rock switch on

the rear panel or SW2000 on the i.MX

Audio Board.

Board

Boot Up

As the board boots up, you will see logs

on the terminal tool on the PC. Select the

right HDMI sound card and play a sound,

the sound will output on the earphone. if

there is no sound, please try below

commands one by one.

> jinit.sh

> jstart.sh --rpc -- pp_sample

> afrun.sh /dev/stdin

> PUT pipeline0/pipeline.elt/0/state=NULL

> PUT pipeline0/pipeline.elt/0/src_device=hdmi-input

> PUT pipeline0/pipeline.elt/0/state=PLAYING

www.nxp.com

ADDITIONAL INFORMATION

Boot Switches

SW4 on the i.MX Audio Board is the i.MX8MPlusboot configuration switch. SW2 and

SW3 on the interposer board are the i.MX8MMiniandi.MX8MNanoboot configuration

switches. If other device want to be selected for boot, please see below tables. the

more detailed information, please see SOM evaluation board kit.

i.MX8MPlusBootDeviceSettings

BOOT DEVICE

SW4

eMMC/USDHC3

Micro-SD/USDHC2

NAND 8-bit single device 256 page

NAND 8-bit single device 512 page

USB Download Mode

Note: 0 is off, 1 is on, x means don’t care

i.MX8MMiniBootDeviceSettings

Device

SW2

SW3

eMMC/USDHC3

Micro-SD/USDHC2

NAND Flash

USB Download Mode

Note: 0 is off, 1 is on, x means don’t care

Quick Start Guide

ADDITIONAL INFORMATION

CONTINUED

i.MX 8M Nano Boot Device Settings

Device

SW2

SW3

eMMC/USDHC3

Micro-SD/USDHC2

NAND Flash

USB Download Mode

Note: 0 is off, 1 is on, x means don’t care

Debug Serial Console

Windows users may need to update the serial drivers on your computer. The drivers

canbe foundathttps://www.ftdichip.com/Drivers/VCP.htm

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