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    Product Updates
          Products >  Development Boards >  MYD-IMX28X (NXP i.MX28) > MYD-IMX28X Development Board
MYD-IMX28X Development Board

MYD-IMX28X Development Board

- MYC-IMX28X CPU Module as Controller Board
- Two 1.27mm pitch 80-pin SMT Male Connectors for Board-to-Board Connections
- 454MHz NXP i.MX28 Series ARM926EJ-S Processors
- 128MB DDR2, 256MB Nand Flash, 128KB SPI Flash
- Serial ports, USB Host, OTG, RS485, TF, Audio, LCD
- Two Ethernet for i.MX287 and One Ethernet for i.MX283
- Two CAN for i.MX287
- Optional 4.3 or 7 inch LCD Module
- Pre-loaded with Linux 2.6.35 OS
- Supports Operation Temperature from -40 to 85 Celsius

MYIR is a NXP Approved Engineering Consultants Partner, welcome to use MYIR's NXP series products!
We also offer custom design services, welcome your inquiry!

The MYD-IMX28X Development Board designed by MYIR is a cost-effective and power-efficient ARM Evaluation Kit (EVK) for NXP i.MX28 family of multimedia applications processors which has an ARM926EJ-S Core, with speed up to 454 MHz. The board can support running Linux operating systems, which allows developers to use it as an i.MX28 reference platform to quickly start their own design. The board takes full features of the i.MX28 ARM processor and has exposed a comprehensive set of peripherals and connectivity options to make the board suitable for smart gateways, human-machine interfaces (HMIs), handheld devices, scanners, portable medical, experimental education and more other industrial applications.

MYD-IMX28X Development Board is using the MYC-IMX28X CPU module as the heart of the system which is an ARM9-based system-on-module (SOM) integrated with the i.MX28 processor, 128MB DDR2 SDRAM, 256MB Nand Flash and Ethernet PHY. It is connected to the base board through two 1.27mm pitch 80-pin connectors. The base board has extended many peripherals and interfaces through headers and connectors, featuring 1 x RS232, 1 x Debug, 2 x USB ports, up to 2 x Ethernet, 2 x CAN, 1 x RS485, TF, Audio, LCD, JTAG, etc.

MYIR offers the board with Freescale i.MX283 or i.MX287 ARM9 CPU by default; user can integrate a different MYC-IMX28X CPU module on the same base board, thus making two variants of i.MX28 evaluation boards.

MYD-IMX283 Development Board – with MYC-IMX283 CPU Module for Freescale i.MX283

MYD-IMX287 Development Board – with MYC-IMX287 CPU Module for Freescale i.MX287

The MYD-IMX283 and MYD-IMX287 boards only have a few differences as described in below table:













The MYD-IMX28X board comes with Linux2.6.35 software packages, detailed documents, necessary cable accessories as well as optional 4.3- and 7-inch LCD (with resistive or capacitive touch screen), WiFi, GPS and GPRS modules to provide a complete Freescale i.MX28 starter kit and enable a quickly start of evaluation of i.MX28 family applications processors.


Mechanical Parameters

  • Dimensions: 140mm x 90mm (base board), 62mm x 38mm (CPU Module MYC-IMX28X)
  • PCB Layers: 4-layer design (base board), 6-layer design (CPU Module MYC-IMX28X)
  • Power supply: +5V
  • Working temperature: -40~85 Celsius (industrial grade)

OS Support

  • Linux 2.6.35

The MYD-IMX28X Controller Board (MYC-IMX28X CPU Module)

MYC-IMX28X Top-View                                                                  MYC-IMX28X Bottom-View


  • Freescale i.MX283, i.MX287 Applications processor
    - Up to 454MHz ARM926EJ-STM core with 16KB/32KB I and D Cache
    128 kbytes of integrated low-power on-chip SRAM
    128Kbytes of integrated mask-programmable on-chip ROM
    1280 bits of on-chip one-time-programmable (OCOTP)ROM
    16-bit mobile DDR (mDDR) (1.8V),DDR2 (1.8V) and LV-DDR2 (1.5V), up to 205MHz DDR clock frequency with voltage overdrive
    Support for up to eight NAND Flash memory devices with up to 20-bit BCH ECC


  • 128MB DDR2 SDRAM
  • 256MB Nand Flash
  • 128KB SPI Data Flash

Peripherals and Signals Routed to Pins

  • On-board Ethernet PHY
  • One power indicator (Red LED)
  • One user LED (Blue)
  • Two 1.27mm pitch 2 x 40-pin SMT male expansion connectors can carry out interfaces below:
    - Ethernet (two for i.MX287, one for i.MX283)
    - 2 x USB2.0 OTG ports
    - Up to 4 x Serial ports
    - 1 x I2C
    - 2 x SPI
    - Up to 8 x ADC (one high-speed ADC, seven low-resolution ADC)
    - Up to 5 x PWM
    - 1 x SDIO

The MYD-IMX28X Base Board (MYB-IMX28X)

  • Serial ports
    - 1 x 3-wire RS232 Debug serial port (DB9)
    - 1 x 5-wire RS232 serial port (UART0)
    - 1 x RS485
  • USB
    - 1 x USB2.0 Host port
    - 1 x USB2.0 OTG port
  • 10/100Mbps Ethernet interfaces (two for i.MX287, one for i.MX283)
  • 2 x CAN interfaces (only for i.MX287)
  • 1 x TF card slot
  • 1 x LCD interface (16-bit true color, supports optional 4.3-inch and 7-inch TFT LCD)
  • 1 x 4-wire resistive touch screen interface
  • 1 x Audio input port (3.5mm jack)
  • 1 x Audio output port (3.5mm jack)
  • 1 x Headphone output port (3.5mm jack)
  • 1 x Mic In interface
  • 1 x Buzzer
  • 1 x 2.54mm pitch 20-pin JTAG interface
  • 4 x Buttons (1 x Reset button, 3 x User buttons)
  • 2 x User LEDs (Blue)
  • 2 x 2.0mm 20-pin expansion connectors
    - 3 x ADC (one high-speed ADC, two low-resolution ADC)
    - 1 x SPI
    - 2 x I2C
    - 3 x UART
    - 3 x PWM

Other MYIR's NXP Products

MYS-6ULX Single Board Computer (based on i.MX 6UL/6ULL)

MYD-Y6ULX Development Board (MYC-Y6ULX CPU Module as core board)

Hardware Specification

The i.MX28 is a low-power, high-performance applications processor optimized for the general embedded industrial and consumer markets. The core of the i.MX28 is Freescale's fast, power-efficient implementation of the ARM926EJ-S™ core, with speeds of up to 454 MHz.

The device is suitable for a wide range of applications, including the following:

  • Human-machine interface (HMI) panels: industrial, home
  • Industrial drive, PLC, I/O control display, factory robotics display, graphical remote controls
  • Handheld scanners and printers
  • Patient-monitoring, portable medical devices
  • Smart energy meters, energy gateways
  • Media phones, media gateways

The integrated power management unit (PMU) on the i.MX28 is composed of a triple output DC-DC switching converter and multiple linear regulators. These provide power sequencing for the device and its I/O peripherals such as memories and SD cards, as well as provide battery charging capability for Li-Ion batteries.

The i.MX28 processor includes an additional 128-Kbyte on-chip SRAM to make the device ideal for eliminating external RAM in applications with small footprint RTOS.

The i.MX28 supports connections to various types of external memories, such as mobile DDR, DDR2 and LV-DDR2, SLC and MLC NAND Flash.

The i.MX28 can be connected to a variety of external devices such as high-speed USB2.0 OTG, CAN, 10/100 Ethernet, and SD/SDIO/MMC.

i.MX28 Family Comparison






Temp. ranges

-20°C to +70°C

-40°C to +85°C

-20°C to +70°C

-40°C to +85°C

-20°C to +70°C

-40°C to +85°C

-40°C to +85°C











L2 Switch

























* Represents maximum available. Some pins are shared with other interfaces

Function Block Diagram of MYD-IMX28X

Dimension Chart of MYD-IMX28X

Software Features

MYIR’s i.MX28 Starter Kit MYD-IMX28X supports for Linux and is provided with software packages. Many peripheral drivers are in source code to help accelerate customers’ designs with a stable and reliable hardware and software platform. The software features are summarized as below:








The secondary bootstrap



Linux 2.6.35


USB Host (support both OHCI and EHCI transmission modes), USB Device (Gadget), Ethernet, MMC/SD, NandFlash, TWI (I2C), SPI, Audio (SGTL5000), LCD Controller (supports 4.3-inch, 7-inch and 10.2-inch LCD), RTC, TouchScreen (4-wire resistive), PWM, UART, CAN, Power Management Unit, LED (GPIO LED and PWM LED)



Provide image file

Relative Download and Links

You can download relative chip datasheet, products datasheet, user manual, software package from below. Any inquiry, please contact MYIR.

1 NXP i.MX28 Datasheet 1.14 MB
2 MYD-IMX28X Development Board Overview 911 KB
3 MYC-IMX28X CPU Module Overview 548 KB
4 MYD-IMX28X Base Board Schematic 190 KB
5 MYC-IMX28X Pinouts Description 124 KB

MYD-IMX28X Development Board Base Board (MYB-IMX28X)

MYD-IMX28X Development Board Core Board (MYC-IMX28X CPU Module)

MYD-IMX28X Development Board

Price and Ordering


Part No.

Unit Price


MYD-IMX28X Development Board






MY-LCD43TP 4.3 inch LCD Module with resistive touch screen



MY-LCD70TP 7 inch LCD Module with resistive touch screen



MY-WF003U USB WiFi Module MY-WF003U USD25


1. One MYD-IMX28X Development Board includes one CPU module MYC-IMX28X mounted on the base board. If you need more CPU module, you can order extra ones. Please contact MYIR to specify i.MX283 or i.MX287 CPU you need after placing order.

2. Discount is available for mass orders. Please contact MYIR for inquiries.

3. The boards are of industrial grade can work in -40~85 Celsius.

4. We accept custom design based on the MYD-IMX28X, whether reducing, adding or modifying the existing hardware according to customer’s requirement.

Packing List

NO. Item Qty Description
1 MYD-IMX28X board 1pc MYD-IMX283/MYD-IMX287
2 Power adapter 1pc 5V/2A Power adapter
3 Ethernet cable 1pc
4 Serial cable 1pc
5 USB Cable 1pc
6 MY-LCD43TP (optional) 1pc 4.3 inch LCD with touch screen
7 MY-LCD70TP (optional) 1pc 7 inch LCD with touch screen
8 DVD 1pc user manual, base board schematic in PDF format, datasheet, software package

More FAQ >>

1. Ltib fsl-alsa-plugins compile errors (L2.6.35_1.1.0_130130_source), Audio

Hi All, I am using imx28 platform with BSP L2.6.35_1.1.0_130130, when I used mplay to play an mp3 file, I can't hear any voice from headphone, and got the following message:
Playing Halo.mp3.
Audio file file format detected.
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3 AUDIO: 44100 Hz, 2 ch, s16le, 320.0 kbit/22.68% (ratio: 40000->176400) Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
[AO OSS] audio_setup: Can't open audio device /dev/dsp: No such file or directory
Opening /dev/dvb/adapter0/audio0
DVB AUDIO DEVICE: No such file or directory
AO: [null] 44100Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...
I checked 'OSS PCM (digital audio) API' and 'OSS Mixer API' in kernel configure and recompiled the kernel, the 'dsp' appears in /dev, but It couldn't solve this problem, I can't hear any voice from headphone.
I try to add "Freescale Multimedia Plugins/Codecs", such as libfslvpuwrap,fsl-alsa-plugins,gst-fsl-plugins, etc...
But when I checked these plugins/codecs (used command './ltib --preconfig config/platform/imx/' then checked in ‘Package list ---> Freescale Multimedia Plugins/Codecs --->’), I cound't compile successful, met the error message as following shown:
asrc_pair.c: In function 'asrc_pair_create':
asrc_pair.c:143: error: 'struct asrc_config' has no member named 'input_word_width'
asrc_pair.c:143: error: 'ASRC_WIDTH_16_BIT' undeclared (first use in this function)
asrc_pair.c:143: error: (Each undeclared identifier is reported only once
asrc_pair.c:143: error: for each function it appears in.)
asrc_pair.c:144: error: 'struct asrc_config' has no member named 'output_word_width'
asrc_pair.c: In function 'asrc_pair_set_rate':
asrc_pair.c:223: error: 'struct asrc_config' has no member named 'input_word_width'
asrc_pair.c:223: error: 'ASRC_WIDTH_16_BIT' undeclared (first use in this function)
asrc_pair.c:224: error: 'struct asrc_config' has no member named 'output_word_width'
asrc_pair.c: In function 'asrc_pair_convert_s16':
asrc_pair.c:292: error: storage size of 'buf_info' isn't known
asrc_pair.c:314: error: 'ASRC_CONVERT' undeclared (first use in this function)
asrc_pair.c:292: warning: unused variable 'buf_info'
make[2]: *** [asrc_pair.lo] Error 1
make[2]: Leaving directory `/media/data/myir/MX28x/L2.6.35_1.1.0_130130_source/ltib/rpm/BUILD/fsl-alsa-plugins-1.0.25/asrc'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/media/data/myir/MX28x/L2.6.35_1.1.0_130130_source/ltib/rpm/BUILD/fsl-alsa-plugins-1.0.25'
make: *** [all] Error 2
error: Bad exit status from /media/data/myir/MX28x/L2.6.35_1.1.0_130130_source/ltib/tmp/rpm-tmp.9498 (%build)
How do I fix it?
I missed some patches?
The asrc_config was defined in include/linux/mxc_asrc.h, and it has no member named input_word_width, output_word_width.


I build the gstreamer codec on the L2.6.35_1.1.0_130130 bsp, the result is ok, refer to the linux multimedia user guide. libfslvpuwrap, gst-plugins-gl, fsl-alsa-plugins only available for MX6 platform. you can refer to the user guide to build the gstreamer, if you couldn't find it, pls let me know it.

2. iMX287 reset issue

Hi All, We used iMX287 MCU to design our board, it has dual ETHs. But if I enable ETHs from kernel, I can't reset the board by press the reset key or run "reboot" command, and if I disable ETHs from kernel, I can reset the board correctly. Are there any conflicts between the chip and the ETHs? or any points we need to attend when design the board?


We got the solution about that, the power of ETHS can't connect to VDDIO, use an extend 3.3v instead. The ENETs probably drained more current than what the VDDIO could supply from a PMU perspective, for more information please refer to the PMU section of the i.MX28 Datasheet.

More FAQ >>


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