OLinuXino-MINI
Open-source single-board Linux computer
USER’S MANUAL
Revision H, April 2015
Designed by OLIMEX Ltd, 2012
All boards produced by Olimex LTD are ROHS compliant
OLIMEX© 2015
IMX233-OLinuXino-MINI user's manual
DISCLAIMER
© 2015 Olimex Ltd. Olimex®, logo and combinations thereof, are registered trademarks of Olimex Ltd.
Other product names may be trademarks of others and the rights belong to their respective owners.
The information in this document is provided in connection with Olimex products. No license, express
or implied or otherwise, to any intellectual property right is granted by this document or in connection
with the sale of Olimex products.
The Hardware project is released under the Creative Commons Attribution-Share Alike 3.0 United States
License. You may reproduce it for both your own personal use, and for commertial use. You will have to
provide a link to the original creator of the project http://www.olimex.com on any documentation or website.
You may also modify the files, but you must then release them as well under the same terms. Credit can be
attributed through a link to the creator website: http://www.olimex.com
The software is released under GPL.
It is possible that the pictures in this manual differ from the latest revision of the board.
The product described in this document is subject to continuous development and improvements. All
particulars of the product and its use contained in this document are given by OLIMEX in good faith.
However all warranties implied or expressed including but not limited to implied warranties of
merchantability or fitness for purpose are excluded. This document is intended only to assist the reader in the
use of the product. OLIMEX Ltd. shall not be liable for any loss or damage arising from the use of any
information in this document or any error or omission in such information or any incorrect use of the
product.
This evaluation board/kit is intended for use for engineering development, demonstration, or evaluation
purposes only and is not considered by OLIMEX to be a finished end-product fit for general consumer use.
Persons handling the product must have electronics training and observe good engineering practice
standards. As such, the goods being provided are not intended to be complete in terms of required design-,
marketing-, and/or manufacturing-related protective considerations, including product safety and
environmental measures typically found in end products that incorporate such semiconductor components or
circuit boards.
Olimex currently deals with a variety of customers for products, and therefore our arrangement with the user
is not exclusive. Olimex assumes no liability for applications assistance, customer product design, software
performance, or infringement of patents or services described herein.
THERE IS NO WARRANTY FOR THE DESIGN MATERIALS AND THE
COMPONENTS USED TO CREATE OLINUXINO. THEY ARE CONSIDERED
SUITABLE ONLY FOR OLINUXINO.
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Table of Contents
DISCLAIMER............................................................................................................. 2
CHAPTER 1 OVERVIEW......................................................................................... 5
1. Introduction to the chapter.......................................................................................................5
1.1 Features.....................................................................................................................................5
1.2 The OLinuXino family............................................................................................................ 6
1.3 Target market and purpose of the board...............................................................................7
1.4 Organization.............................................................................................................................7
CHAPTER 2 SETTING UP THE OLINUXINO BOARD...................................... 8
2. Introduction to the chapter.......................................................................................................8
2.1 Electrostatic warning...............................................................................................................8
2.2 Requirements........................................................................................................................... 8
2.3 Powering the board..................................................................................................................9
2.4 Prebuilt software......................................................................................................................9
2.5 Using BitBurner.....................................................................................................................10
2.6 Building the Linux image...................................................................................................... 11
2.7 How to blink the LED............................................................................................................13
2.8 How setup the I2C, SPI, UART............................................................................................ 14
2.9 First steps with iMX233-OLinuXino-MINI........................................................................ 14
CHAPTER 3 OLINUXINO BOARD DESCRIPTION..........................................15
3. Introduction to the chapter.....................................................................................................15
3.1 Layout (top view)...................................................................................................................15
CHAPTER 4 THE iMX233 MICROCONTROLLER...........................................16
4. Introduction to the chapter.....................................................................................................16
4.1 The microcontroller...............................................................................................................16
CHAPTER 5 CONTROL CIRCUITY AND HARDWARE MODULES.............19
5. Introduction to the chapter.....................................................................................................19
5.1 Reset........................................................................................................................................19
5.2 Clocks......................................................................................................................................19
5.3 Power supply circuit.............................................................................................................. 20
CHAPTER 6 CONNECTORS AND PINOUT....................................................... 22
6. Introduction to the chapter.....................................................................................................22
6.1 Debugging interfaces............................................................................................................. 22
6.1.1 UART debug........................................................................................................................23
6.1.2 SJTAG debug...................................................................................................................... 23
6.1.3 Classic JTAG debug............................................................................................................24
6.2 SD/MMC slot..........................................................................................................................25
6.3 UEXT module.........................................................................................................................26
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6.4 GPIO (General Purpose Input/Output) 40pin connector..................................................27
6.5 USB HOSTs............................................................................................................................ 30
6.6 PWR Jack...............................................................................................................................30
6.7 Headphones and line-in connector....................................................................................... 31
6.8 Battery connector...................................................................................................................32
6.9 Composite video connector................................................................................................... 32
6.10 Boot mode positions.............................................................................................................33
6.11 Jumper description.............................................................................................................. 34
6.11.1 SCL_SW/SCL_HW and SDA_SW/SDA_HW................................................................34
6.11.2 5V_E...................................................................................................................................34
6.11.3 3.3VIO_E and 3.3V_E jumpers.......................................................................................34
6.11.4 Boot mode selecting jumpers........................................................................................... 34
6.12 Additional hardware components...................................................................................... 35
6.13 Accessories............................................................................................................................ 35
6.13.1 USB-SERIAL-CABLE-F..................................................................................................35
CHAPTER 7 BLOCK DIAGRAM AND MEMORY.............................................36
7. Introduction to the chapter.....................................................................................................36
7.1 Memory addresses................................................................................................................. 36
7.2 Processor block diagram.......................................................................................................37
7.3 Physical memory map........................................................................................................... 38
CHAPTER 8 SCHEMATICS...................................................................................39
8. Introduction to the chapter.....................................................................................................39
8.1 Eagle schematic......................................................................................................................39
8.2 Physical dimensions...............................................................................................................41
CHAPTER 9 REVISION HISTORY AND SUPPORT..........................................42
9. Introduction to the chapter.....................................................................................................42
9.1 Document revision................................................................................................................. 42
9.2 Board revision........................................................................................................................ 44
9.3 Useful web links and purchase codes...................................................................................45
9.4 Product support..................................................................................................................... 46
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CHAPTER 1 OVERVIEW
1. Introduction to the chapter
Thank you for choosing the OLinuXino single board computer from Olimex! This document
provides a user’s guide for the Olimex OLinuXino board. As an overview, this chapter gives the
scope of this document and lists the board’s features. The differences between the members of the
OLinuXino family are mentioned. The document’s organization is then detailed.
The OLinuXino development board enables code development of applications running on the
microcontroller i.MX233, manufactured by Freescale Semiconductor.
OLinuXino is an open-source, open-hardware project and all documentation is available to the
customer.
1.1 Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
iMX233 ARM926J processor at 454Mhz
64 MB RAM
SD-card connector for booting the Linux image
TV PAL/NTSC video output
3 USB High Speed Hosts
Stereo Audio Input
Stereo Headphones Audio Output
Two Buttons
UEXT connector for connection of different peripherial modules
40 pin GPIO for connection to external hardware
Board is in the proper shape and dimensions to fit inside Pactec JM42 plastic box
http://www.pactecenclosures.com/pdfs/drw_JM-42.pdf
Power supply input 6-16VDC
optional WIFI RTL8188CU module
PCB dimensions: 3.70'' x 2.15'' (94.0mm x 54.6mm)
Nominal dimensions: 3.70'' x 2.65'' (94.0mm x 67.3mm)
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1.2 The OLinuXino family
Table of comparison
OLinuXino-NANO OLinuXino-MICRO OLinuXino-MINI OLinuXino-MAXI
Processor
iMX233 @ 454Mhz
iMX233 @ 454Mhz
iMX233 @ 454Mhz
iMX233 @ 454Mhz
Ram [MB]
64
64
64
64
# USB hosts
1
1
3
2
100/150 Mbit
Ethernet*
No/WIFI
option**
No/WIFI option** No/WIFI
option***
Yes/WIFI
option**
GPIO connector
40pins
60pins
40pins
40pins
# of buttons
3
3
2
2
Reset button
Yes
Yes
Yes
Yes
DC power supply
5V
5V
6V-16V
6V-16V
Dimensions
3.00'' x 0.80''
3.40'' x 1.70''
3.70'' x 2.65''
3.70'' x 2.65''
Breadboarding
Yes
Yes
No
No
Audio IN
connector
No
No
Yes
Yes
Audio OUT
connector
No
No
Yes
Yes
UEXT connector
Yes
No
Yes
Yes
Power jack
No****
Yes
Yes
Yes
VGA connector
No
Yes
Yes
Yes
* 100Mbit Ethernet for the wired network of OLinuXino-MAXI. 150Mbit for the WIFI following
811.02n standard.
** All three boards have the option to work with MOD-WIFI_RTL8188, which is USB WIFI
modem with RTL8188CU chip and can be purchased separately. MOD-WIFI_RTL8188 can be
connected to any of the OLinuXino boards via the USB.
*** OLinuXino-MINI has additional option of having RTL8188CU hardware mounted! If you wish
RTL8188CU embedded in the device you should purchase OLinuXino-MINI-WIFI. Choosing the
embedded WIFI option will leave your USB-HOSTs available for use.
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1.3 Target market and purpose of the board
The boards from the OLinuXino family are ready to use, easy to setup and are suitable for
embedded programming enthusiasts, Linux hobbyists, gadget fans and also professionals (since its
low cost makes it very good solution for application orientated embedded systems). The main usage
of the board is software embedded development without the urge of understanding perfectly the
hardware.
The strong points of the boards are the processor speed, the mobility of the board and the low price.
The very well documented Freescale iMX233 is another solid feature.
Customers have full access to the technical documentation of the board. The software is released
under General Purpose License and the board is considered open-hardware.
1.4 Organization
Each section in this document covers a separate topic, organized as follow:
– Chapter 1 is an overview of the board usage and features
– Chapter 2 provides a guide for quickly setting up the board
– Chapter 3 contains the general board diagram and layout
– Chapter 4 describes the component that is the heart of the board: the iMX233
microcontroller
– Chapter 5 is an explanation of the control circuitry associated with the microcontroller to
reset. Also shows the clocks on the board
– Chapter 6 covers the connector pinout, peripherals and jumper description
– Chapter 7 shows the memory map
– Chapter 8 provides the schematics
– Chapter 9 contains the revision history, useful links and support information
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CHAPTER 2 SETTING UP THE OLINUXINO BOARD
2. Introduction to the chapter
This section helps you set up the OLinuXino development board for the first time.
Please consider first the electrostatic warning to avoid damaging the board, then discover the
hardware and software required to operate the board.
The procedure to power up the board is given, and a description of the default board behavior is
detailed.
2.1 Electrostatic warning
OLinuXino is shipped in a protective anti-static package. The board must not be exposed to high
electrostatic potentials. A grounding strap or similar protective device should be worn when
handling the board. Avoid touching the component pins or any other metallic element.
2.2 Requirements
In order to set up the OLinuXino optimally, the following items are required:
- 6V to 16V source of power with 1A maximum amperage.
- SJTAG interface programmer
- USB keyboard
- Monitor with composite interface or Personal Computer + USB-SERIAL-CABLE-F
- SD card with Linux image
Note that the board arrives without SD card or Linux image. You can purchase a card with Linux
separately. It is recommended that the user has basic Linux experience.
Some of the suggested items can be purchased by Olimex, for instance:
iMX233-OLinuXino-SD – SD card with the Linux image
USB-SERIAL-CABLE-F – USB serial console cable female (check “6.1.1 UART Debug” for info
how to connect it to the board)
SY0612E – power supply adapter 12V/0.5A for iMX233-OLinuXino-MINI
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2.3 Powering the board
The board is powered either via the PWR jack or via a battery. It should be supplied from a 6V to
16V source with maximum current of 1A from the power jack.
All measures below are taken at 10V.
If measuring the current consumption it should be around 0.06A before initializing all the
peripherals. The consumption raises to 0.12A without WIFI and USB hosts initialized and Linux
running. The consumption goes up 0.15A with the Linux running when WIFI and both USB hosts
initialized.
If you have a standard USB flash drive attached to a USB host, Linux and WIFI running the typical
consumption is around 0.20A.
When powered by the typical 3.7V battery the WIFI and USB-hosts will be disabled if you use
external 3.3 DC-DC (not mounted by default).
For the European customers we sell a power supply adapter 12V/0.5A – SY0612E.
2.4 Prebuilt software
Note that the boards arrive without Linux or SD card. The Linux image can be purchased
separately on a SD card or you can built and write it yourself.
When we program the boards we change the default position of the following HW_OCOTP_ROM0
fuses of the processor:
SD_MBR_BOOT(3) - Blown
SD_POWER_GATE_GPIO(21:20) – 10-PWM3
For burning the fuse position we use the BitBurner software. This operation is discussed in details
before. Proceed with great caution when burning fuses since it is irreversible operation.
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2.5 Using BitBurner
IMPORTANT! MODIFYING THE FUSES IS IRREVERSIBLE PROCESS! BURNING THE
WRONG FUSES MIGHT DAMAGE OLINUXINO IRREVERSIBLY! BURNING WRONG
FUSES MIGHT CAUSE BOOT PROBLEMS!
BURN FUSES AT OWN RISK!
The bit burning is done via the USB of the computer connected to the OLINUXINO board and the
BitBurner software. To be able to burn the fuses you will need to make a custom cable that connects
a USB with the 3 pin holes found at the bottom of the board named “GND”, “DP”, “DM” (check
the picture below for a better view how the three wires must be connected.
After soldering the three wires you can place a marker on each of them or use colored wires to be
able to distinguish them. You can also use some gel to keep them tight on the USB connector. On
the opposite side of the cables you might place 50mil (1.27mm) male connector following the order
of the signals. Please also restrain from using wires longer than 20 cm since that might make the
connection unreliable.
Download BitBurner from https://www.olimex.com/dev/OLINUXINO/iMX233OLINUXINO/BitBurner.v1.0.4.6.zip. Extract it and start the .exe. If you connect everything you
should see and choose HID-compilant device from the “Select device” drop-down menu. If you
check the fuses we have already burned the application should show an image as the one on the next
page.
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2.6 Building the Linux image
Note that building the Linux image from scratch is a time-consuming task. Even with powerful
machine and fast internet connection it might take few hours compiling. Some Linux distributions
might lack the tools required to compile/build/execute scripts/download from repository – how to
get those is not discussed below.
The Linux image is created and downloaded from https://github.com/Freescale/fsl-community-bspplatform. For the test here we used Debian 6.0 with GNOME visual libraries. The steps we did:
1) From the terminal created folder “bin” in home folder:
user@dist$: mkdir bin
user@dist$: cd bin
Add bin directory to PATH in order to do the next steps easier. Else navigate to the right folders.
2) Installed `repo` utility needed for the bitbake file fetching from the repository:
user@dist$: curl https://dl-ssl.google.com/dl/googlesource/git-repo/repo > ~/bin/repo
user@dist$: chmod a+x ~/bin/repo
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3) Created directory for the project and download the BSP source from the git repository:
user@dist$: mkdir fsl-community-bsp
user@dist$: cd fsl-community-bsp
~/fsl-community-bsp$: repo init -u https://github.com/Freescale/fsl-community-bsp-platform -b
denzil
~/fsl-community-bsp$: repo sync
4) You can change the settings for the build if you want at fsl-community-bsp/build/conf/local.conf.
I changed the “machine” name to “imx233-olinuxino-maxi”.
For Linux kernel configurations and settings you can do (of course you can use also the default
settings):
~/fsl-community-bsp$:. ./setup-environment build
~/fsl-community-bsp/build$:bitbake linux-imx -c menuconfig
Check the image below:
5) Now to start building the image:
~fsl-community-bsp$:. ./setup-environment build
~fsl-community-bsp/build $: bitbake core-image-minimal
Note: on different Linux distributions you might have different tools installed and you will probably
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need to install dependencies needed for the compile/build scripts. Here are some (but not all) of the
mandatory ones: G++; diffstat; texi2html; chrpath; gawk; texinfo; some git client.
To ensure you have the latest version supported with all the updates visit
https://github.com/OLIMEX/OLINUXINO and https://github.com/Freescale/fsl-community-bspplatform.
2.7 How to blink the LED
In this chapter you will find a way to achieve the most basic task in electronics – the “Hello World”
of electronics – blinking the LED.
First we set the pin responsible for the LED as an output and we can set its value manually to high
or low position – make it blink manually. The LED mounted on the board uses GPIO65. You can
use external diode instead of the one mounted – you have to look at the table “The Linux
implementation of pins” in the hardware section to get the correct linux name for the GPIO pin.
echo out > /sys/class/gpio/gpio65/direction
echo 1 > /sys/class/gpio/gpio65/value
If you want to set the blink off you should change the value on the second line to:
echo 0 > /sys/class/gpio/gpio65/value
To show the info for all GPIOs:
ls /sys/class/gpio
To make it turn on – turn off automatically (e.g. blink) we use the text redactor VI to write the
Linux script:
echo out > /sys/class/gpio/gpio65/direction
while true
do
echo 1 > /sys/class/gpio/gpio65/value
sleep 1
echo 0 > /sys/class/gpio/gpio65/value
sleep 1
done
We save it as as “gpio” and we make it executable with
chmod +x gpio
then we execut the script with:
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./gpio
The LED should start blinking with 0.5Hz.
2.8 How setup the I2C, SPI, UART
There are number of examples with our extension module board to achieve those connections on the
UEXT. The examples might be used as an example for I2C, SPI or UART communication. You can
find them at our GitHub page:
https://github.com/OLIMEX/OLINUXINO/tree/master/SOFTWARE/iMX233
2.9 First steps with iMX233-OLinuXino-MINI
A very good customer-made web page on “First steps with iMX233-OlinuXino-MINI”:
http://azug.minpet.unibas.ch/~lukas/bricol/olinuxino-imx233/index.html
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CHAPTER 3 OLINUXINO BOARD DESCRIPTION
3. Introduction to the chapter
Here you get acquainted with the main parts of the board. Note the names used on the board differ
from the names used to describe them. For the actual names check the OLinuXino board itself.
3.1 Layout (top view)
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CHAPTER 4 THE iMX233 MICROCONTROLLER
4. Introduction to the chapter
In this chapter is located the information about the heart of OLinuXino – its microcontroller. The
information is a modified version of the datasheet provided by its manufacturers.
4.1 The microcontroller
ARM926 CPU Running at 454 MHz
Integrated ARM926EJ-S CP
16-Kbyte data cache and 16-Kbyte instruction cache
— One-wire JTAG interface
— Resistor-less boot mode selection using integrated OTP values
32Kbytes of Integrated Low-Power On-Chip RAM
64 Kbytes of Integrated Mask-Programmable On-Chip ROM
1 Kbit of On-Chip One-Time-Programmable (OCOTP) ROM
Universal Serial Bus (USB) High-Speed (Up to 480 Mb/s), Full-Speed (Up to 12 Mb/s)
— Full-speed/high-speed USB device and host functions
— Fully integrated full-speed/high-speed Physical Layer Protocol (PHY)
— Mass storage host-capable (uncertified by USB-IF)
Power Management Unit
— Single inductor DC-DC switched converter with multi-channel output supporting Li-Ion
batteries.
— Features multi-channel outputs for VDDIO (3.3 V), VDDD (1.2 V), VDDA (1.8 V),
VDDM (2.5V) and regulated 4.2V source.
— Direct power from 5-V source (USB, wall power, or other source), with programmable
current limits for load and battery charge circuits.
— Silicon speed and temperature sensors enable adaptive power management over
temperature and silicon process.
Audio Codec
— Stereo headphone DAC with 99 dB SNR
— Stereo ADC with 85 dB SNR
— Stereo headphone amplifier with short-circuit protection and direct drive to eliminate
bulky capacitors
— Amplifiers are designed for click/pop free operation.
— Two stereo line inputs
— Microphone input
— SPDIF digital out
16-Channel Low-Resolution ADC
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— 6 independent channels and 10 dedicated channels
— Resistive touchscreen controller
— Temperature sensor controller
— Absolute accuracy of 1.3%
Security Features
— Read-only unique ID for digital rights management algorithms
— Secure boot using 128-bit AES hardware decryption
— SHA-1 hashing hardware
— Customer-programmed (OTP) 128 bit AES key is never visible to software.
External Memory Interface (EMI)
— Provides memory-mapped (load/store) access to external memories
— Supports the following types DRAM:
— 1.8V Mobile DDR
— Standard 2.5V DDR1
Wide Assortment of External Media Interfaces
— High-speed MMC, secure digital (SD)
— Hardware Reed-Solomon Error Correction Code (ECC) engine offers industry-leading
protection and performance for NANDs.
— Hardware BCH ECC engine allowing for up to 20-bit correction and programmable
redundant area.
Dual Peripheral Bus Bridges with 18 DMA Channels
— Multiple peripheral clock domains save power while optimizing performance.
— Direct Memory Access (DMA) with sophisticated linked DMA command architecture
saves power and off-loads the CPU.
Highly Flexible Display Controller
— 8-bit data ITU-R BT.656 D1 digital video stream output mode (PAL/NTSC), with onthefly RGB to YCbCr color-space-conversion.
— Flexible input formats
Pixel Processing Pipeline (PXP)
— Provides full path from color-space conversion, scaling, alpha-blending to rotation
without intermediate memory access
— Bi-linear scaling algorithm with cropping and letterboxing
— Alpha-blend, BITBLT, color-keying
— Memory efficient block-based rotation engine
Integrated TV-Out Support
— Integrated PAL/NTSC TV-encoder fully pipelined to display controller’s D1 resolution
output stream
— Integrated low-power 10-bit Video DAC (VDAC) for composite analog video output.
Data Co-Processor (DCP)
— AES 128-bit encryption/decryption
— SHA-1 hashing
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— High-speed memory copy
Three Universal Asynchronous Receiver-Transmitters (UARTs)
— Two high-speed application UARTs operating up to 3.25 Mb/s with hardware flow
control and dual DMA.
— Debug UART operates at up to 115Kb/s using programmed I/O.
I2C Master/Slave
— DMA control of an entire EEPROM or other device read/write transaction without CPU
intervention
Dual Synchronous Serial Ports (for SPI, MMC, SDIO, Triflash)
— 1-bit, 4-bit and 8-bit MMC/SD/SDIO modes
— Compliant with SDIO Rev. 2.0
— SPI with single, dual and quad modes.
Four-Channel 16-Bit Timer with Rotary Decoder
Five-Channel Pulse Width Modulator (PWM)
Real-Time Clock
— Alarm clock can turn the system on.
— Uses the existing 24-MHz XTAL for low cost or optional low power crystal (32.768 kHz
or 32.0 kHz), customer-selectable via OTP.
Customer-Programmable One-Time-Programmable (OTP) ROM via Integrated eFuse Block
— Resistor-less boot mode selection
— 128-bit boot mode crypto key
— Boot mode specification of NAND characteristics for device that the customer is
soldering to the board. This means no more costly delays waiting for new device support in t
he boot ROM.
— Fully software-programmable and accessible
Flexible I/O Pins
— All digital pins have drive-strength controls
— Most non-EMI digital pins have general-purpose input/output (GPIO) mode.
For comprehensive information on the microcontroller visit the Freescale’s web page for a
datasheet.
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CHAPTER 5 CONTROL CIRCUITY AND HARDWARE MODULES
5. Introduction to the chapter
Here you can find information about reset circuit and quartz crystals locations, the power supply
circuit is discussed.
5.1 Reset
OLinuXino's reset circuit includes R42 (47KΩ), R10 (47 Ω), T1, T2, Q1 and a RESET button. The
RESET is specific for the fact that it is accomplished when the quartz is disconnected using 3.3V
and the transistors T1 and T2.
5.2 Clocks
24 MHz quartz crystal Q1 is connected to pins 121 and 122 of the iMX233 processor.
12 MHz quartz crystal Q2 is found at pins 6 and 7 of the LAN and WIFI controller – GL850G.
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5.3 Power supply circuit
The power supply circuit of OLinuXino-MINI allows flexible input supply from 6V to 16V direct
current. This means a wide range of power supplies, adapters, converters are applicable. The
maximum amperage the board can draw is 1A.
The board with the prebuilt software and SD card equipped consumes between 0.12A and 0.16A
while booting the Linux image. When no other peripherals are connected the board (except the SD
card) the typical consumption is 0.12A. With one flash memory stick the consumption raises to
0.16A.
When powered by the typical 3.7V battery the USB-hosts are disabled. The consumption when
Linux is running is around 0.75A.
The board can be powered either from the power jack or from the LIPO_BAT connector. Note that
since standard batteries can't provide the voltage needed for the board it is advisable to use the
power from the power jack. When you use the LIPO_BAT connector and a battery the chip handling
the Ethernet and the USB hosts is disabled. Also the power button has alternative function when the
board is powered by a battery – check 6.12.
If you have successfully powered the board the red PWR LED will turn on. Note that it is possible
to have the PWR LED on even if there isn't enough power for proper operation of the board and all
the peripherals currently connected.
Note that the whole 3.3V part is not mounted (elements marked as NA) by default because we use
the internal 3.3V DC-DC convertor in the iMX233. However, the internal DC-DC in the processor
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is not very reliable when a lot of current is required. It is better to mount the elements of the 3.3V
part circuit if you wish to use 3.3V at heavier loads.
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CHAPTER 6 CONNECTORS AND PINOUT
6. Introduction to the chapter
In this chapter are presented the connectors that can be found on the board all together with their
pinout and notes about them. Jumpers functions are described. Notes and info on specific
peripherals are presented. Notes regarding the interfaces are given.
6.1 Debugging interfaces
If you don't have a separate monitor or display around, and you don't wish to swap cables constantly
with your personal computer using the debug interfaces provide better option for you OLinuXino
experience.
There are three debugging options available on the OLinuXino. It is preferable to use one of the
first two – UART or SJTAG but in case you want to use the classic 6-wire parallel JTAG there is an
option explained below.
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6.1.1 UART debug
The first one is a debug UART interface – U_DEBUG. You can use our USB-SERIAL-CABLE
for debugging via the UART.
Note on how to use the U_DEBUG with USB-SERIAL-CABLE-F which has RED GREEN
BLUE wires GND=BLUE, RX(INPUT)=GREEN, TX(OUTPUT)=RED. You have to connect
to OLinuXino-MAXI U_DEBUG connector in this sequence:
BLUE wire to pin.3 (GND)
GREEN wire to pin.2 (TX)
RED wire to pin.1 (RX)
The baud rate for serial communication is 115 200.
U_DEBUG
Pin #
Signal Name
Processor Pin #
1
PWM0/DUART_RXD
125
2
PWM1/DUART_TXD
126
3
GND
30, 35, 98, 105, 112, 118
4
DEBUG
84
You can also check the pin names at the bottom of the board under the U_DEBUG header.
6.1.2 SJTAG debug
The second interface is the Serial JTAG (SJTAG) one-wire interface. It works with various external
JTAG debugger dongles through a Freescale-defined FPGA/CPLD. SJTAG supports the Green
Hills Slingshot and ETM probe debugger dongles, as well as those made by ARM, Abatron, and
Lauterbach.
The pin names are also written at the bottom of the board for your convenience. Note that the
SJTAG interface comes without plastic header mounted.
SJTAG
Pin # Signal Name
Processor Pin #
1 3.3VREG
-
2 GND
30, 35, 98, 105, 112, 118
3 SJTAG_PSW
119.12
4 DEBUG
84
The HW_DIGCTL_CTRL_USE_SERIAL_JTAG bit in the digital control block selects whether the
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one-wire serial JTAG interface or the alternative six-wire parallel JTAG interface is used. There are
other options in the digital control block which might interest you and our advice is to check the
iMX233's datasheet released by Freescale.
6.1.3 Classic JTAG debug
The third option is to use the classic 6-pin parallel JTAG (not including GND and VCC). There are
pads left for this option at the bottom of the board under the SD card holder. They are named
individually and framed near a “JTAG” name.
The important thing is that these pins are multiplexed with the SD card signals. In order to use the
6-pin JTAG you will have to stop using the SD card. Note also that the classic JTAG interface
comes without plastic header mounted so in order to use it you will need to use wires for
connection.
Consider the software settings required to switch from SJTAG to 6-pin JTAG and vice verse
referring to the iMX233 manual. For instance:
The HW_DIGCTL_CTRL_USE_SERIAL_JTAG bit in the digital control block selects whether the
serial JTAG interface or the alternative six-wire parallel JTAG interface is used.
HW_DIGCTL_CTRL_USE_SERIAL_JTAG – 0×0 – Selects whether the one-wire serial JTAG
interface or the alternative six-wire parallel JTAG interface is used. 0 = Parallel six-wire JTAG is
enabled and is mapped to a collection of module pins that must be enabled by programming their
MUXSEL bits in the pin control block. 1 = Serial JTAG is enabled and uses the dedicated DEBUG
pin. The ROM bootcode writes this field prior to enabling JTAG, selecting which type of JTAG pin
signaling to use. OLD_JTAG = 0×0 Use six-wire parallel JTAG mode. SERIAL_JTAG = 0×1 Use
one-wire serial JTAG mode.
Classic JTAG (multiplexed with SD card)
Pin # Signal Name
Processor Pin #
1 SSP1_DATA1
85
2 SSP1_DATA0
84
3 GND
30, 35, 98, 105, 112, 118
4 SSP1_SCK
90
5 SD_VCC
-
6 SSP1_CMD
83
7 SSP1_DATA3
87
8 SSP1_DATA2
86
It is good idea to check the datasheet of the iMX233 processor for all the options in the digital
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control block. The processor's datasheet should be always the first piece of paper you consult when
dealing with electronics.
Notice that the pad numeration is written at the bottom of OLinuXino-MINI under the microSD
card connector. Please check the manual part for microSD card for a schematic of the pins.
6.2 SD/MMC slot
The microSD card slot is a standard 8pin connector.
We have tested a number of microSD cards on the OLinuXino boards and all of them worked fine
regardless manufacturer or capacity. However, keep in mind that some of the lower quality
microSD cards might draw too much current from the slot which might cause power-state problems.
If you suspect the microSD card is causing problems please try using another one of better quality
for better results.
microSD card connector
Pin # Signal Name
Processor Pin #
1 SSP1_DATA2
86
2 SSP1_DATA3
87
3 SSP1_CMD
83
4 SD_VCC
-
5 SSP1_SCK
90
6 GND
30, 35, 98, 105, 112, 118
7 SSP1_DATA0
84
8 SSP1_DATA1
85
Notice that the pad numeration is written at the bottom of OLinuXino-MINI under the microSD
card connector.
When removing the card, please make sure that you release it from the connector by pushing and
NOT by pulling the card directly (this can damage both the connector and the microSD card).
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6.3 UEXT module
OLinuXino board has UEXT connector and can interface Olimex's UEXT modules.
For more information on UEXT please visit:
https://www.olimex.com/Products/Modules/UEXT/
*Note the two jumpers PIN29/SOFT_CL – PIN22/LCD_EN/I2C_SCL, and PIN28/SOFT_SDA3 –
PIN21/LCD_HSYNC/I2C_SDA which by default are set to a software SPI. They can be used to set
the whole UEXT to a hardware SPI.
UEXT connector
Pin # Signal Name
Processor Pin #
1 +3.3VREG
-
2 GND
30, 35, 98, 105, 112, 118
3 AUART1_TXD
127
4 AUART1_RXD
128
5 I2C_SCL
34(default) OR 11*
6 I2C_SDA
31(default) OR 15*
7 PIN9/LCD_D08/SSP2_MISO
22
8 SSP2_MOSI
21
9 SSP2_SCK
33
10 PIN12/LCD_D11/UEXT_CS
25
The UEXT pinout is also printed at the bottom of the board under the connector.
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6.4 GPIO (General Purpose Input/Output) 40pin connector
The GPIO pins are led out on a separate 40pin connecter. They allow the user to attach additional
hardware, check readings or perform hardware debug. The “GPIO Pin#” column shows connector
number and does NOT represent the naming on the bottom of the board.
GPIO
Signal Name
Pin#
1 BAT
GPIO connector hardware
GPIO
Processor pin#
Signal Name
Pin#
103
21 PIN8/LCD_D07
Processor pin#
9
2
GND
30, 35, 98,
105, 112, 118
22
PIN27/PWM2
91
3
PIN17/LCD_D16
19
23
PIN7/LCD_D06
8
4
PIN18/LCD_D17/LAN_RES
20
24
PIN28/SOFT_SDA
31
5
PIN16/LCD_D15
28
25
PIN6/LCD_D05
7
6
PIN19/LCD_DOTCLK
17
26
PIN29/SOFT_SCL
34
7
PIN15/LCD_D14
29
27
PIN5/LCD_D04
6
8
PIN20/LCD_VSYNC
16
28
PIN30
81
9
PIN14/LCD_D13
26
29
PIN4/LCD_D03
5
10
PIN21/LCD_HSYNC/
I2C_SDA
15
30
PIN31
82
GPIO
Name
Pin#
11 PIN13/LCD_D12
Processor pin#
27
GPIO
Name
Pin#
31 PIN3/LCD_D02
Processor pin#
4
12
PIN22/LCD_EN/I2C_SCL
11
32
PIN32/LRADC1
107
13
PIN12/LCD_D11/UEXT_CS
25
33
PIN2/LCD_D01
3
14
PIN23/LCD_DISP
12
34
PIN33/LRADC0
108
15
PIN11/LCD_D10
24
35
PIN1/LCD_D00
2
16
PIN24/LCD_WR
13
36
PIN34/MIC
116
17
PIN10/LCD_D09
23
37
+5VUEXT
102
18
PIN25/LCD_RS
14
38
3.3VREG
-
19
PIN9/LCD_D08/
SSP2_MISO
22
39
VIN
-
20
PIN26/LCD_CS
10
40
GND
30, 35, 98,
105, 112, 118
The hardware is associated differently in the Linux following the GPIO naming conventions
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suggested in the iMX233 datasheet. You can check the connection between Linux naming of the
pin, Olimex naming of the pin and the consecutive connector pin number in the table below. The
ones filled with “Not implemented” doesn't have Linux support by the time of writing and will be
updated overtime. “Linux GPIO” is the one you should use in Linux (the one in the datasheet);
“OLinuXino name” is the pin as written on the bottom of the board. ”OLinuXino GPIO Connector
#” is the consecutive number of pins with BAT being Pin#1 and GND#40.
Note that if “OLinuXino Name” starts with P and then is followed by a number X, the PX is the
name written on the bottom of the board (under the connector) with white ink. If “OLinuXino
Name” is other text it is a signal used for the hardware of the board but still can be controller by the
Linux (it can't be found at the GPIO connector though).
Linux
GPIO/iMX23
3 GPIO
0
OLinuXino Name
PIN9
The Linux implementation of pins
Linux
OLinuXino GPIO
OLinuXino
GPIO/iMX23
Connector #
Name
3 GPIO
19
51
PIN23
OLinuXino GPIO
Connector #
18
1
PIN10
17
52
PIN25
16
2
PIN11
15
53
PIN26
20
3
PIN12
13
55
PIN19
12
4
PIN13
11
56
PIN22
10
5
PIN14
9
57
PIN20
8
6
PIN15
7
64
JTAG_TDO1
SSP1_CMD
Not implemented
7
PIN16
5
65
LED1
Not implemented
16
PIN17
3
91
PIN30
28
17
PIN18
4
92
PIN31
30
19
TEST_PAD
Not implemented
23
PIN29
26
24
UEXT_SPI2_SCK
Not implemented
25
PIN28
24
30
UEXT_TX1
Not implemented
31
UEXT_RX1
Not implemented
32 to 39
Not implemented
Not implemented
The above picture was made by a customer.
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IMX233-OLinuXino-MINI user's manual
Below you can find the GPIO_CON as seen in the schematic:
When looking at the bottom of OLinuXino-MINI near the GPIO connector there is also an
additional GND pad named GND_PIN which is a fast way to have access to a ground signal.
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6.5 USB HOSTs
The USB hosts (and wireless connectivity option) are controlled by a single chip (GL850G).
The big advantage of having USB hosts available over USB devices is that you can as well use
them as masters.
The signals follow the familiar and standard USB host pattern:
USB 2-level host
PIN#
SIGNAL NAME
1
USB_PWR_A
2
USB_HOST_D-
3
USB_HOST_D+
4
GND
6.6 PWR Jack
Our boards usually use a DC barrel jack with a 2.0mm thick inner pin. The outer hole diameter is
6.3mm. The standard power supply jack used in most of the OLIMEX boards has positive voltage
in the inner pin. You should provide between 6 and 16 volts @ 1A to the board.
Pin #
Signal Name
1
Power Input
2
GND
More info about the power supply can be found in chapter 5 of this manual.
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6.7 Headphones and line-in connector
Standard audio jack and phone jack are mounted for the audio interfacing.
Headphones/Audio out connector
Pin#
SIGNAL NAME
Processor Pin#
2
L channel
113
3
R channel
109
5
GND
GND pins
The headphones resistance is 16 Ohms!
Line in/Audio in connector
Pin#
SIGNAL NAME
Processor Pin#
2
L channel
115
3
R channel
114
5
GND
GND pins
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6.8 Battery connector
When using the battery connector keep in mind that it is an energy solution that wouldn't be able to
power the board and all the peripherals. The voltage of a 3.7V LIPO battery would be enough to
power the processor and the memory but probably won't be enough to power all the devices you
mount on the USB hosts.
Pin #
Signal Name
1
VBAT
2
GND
The pins are also written on the top of the board in the base of the connector.
6.9 Composite video connector
The composite video is the connector you should use if you wish OLinuXinoMINI video output on a monitor.
The whole signal is controlled by pin #104 from the i.MX233 processor.
The + signal is lead to the middle of the connector. The outside part is the GND.
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6.10 Boot mode positions
The iMX233 can boot the operating system from different locations. The default location for the
Linux files we used is the microSD card. There are 4(four) jumpers responsible for the boot
location: D03, D02, D01 and D00. They are located on the top of the board between the processor
and 40pin GPIO connector. Note that the jumpers are SMD type and opening a jumper would
require cutting, closing a jumper would require soldering. To be able to do the quoted operations
you will need basic engineering skills and experience. You can check below the table or the
schematic for the correct positions. Value of “1” means the jumper is closed.
BOOT MODE D03
d02
d01
d00
USB 0
0
0
0
3.3V I2C Master 0
0
0
1
33.3V SPI Flash 1 Master 0
0
1
0
3.3V SPI Flash 2 Master 0
0
1
1
3.3V NAND 0
1
0
0
Start up waits for JTAG
0
debugger connection
1
1
0
3.3V SD/MMC 1 (Default!!!) 1
0
0
1
3.3V SD/MMC 2 1
0
1
0
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6.11 Jumper description
Please note that all the jumpers on the board are SMD type. If you feel insecure in your
soldering/cutting technique it is better not to try to adjust the jumpers.
6.11.1 SCL_SW/SCL_HW and SDA_SW/SDA_HW
Those two jumpers must be moved together – there are two available options – configuring
software I2C interface (SCL_SW, SDA_SW) or hardware I2C interface (SCL_HW, SDA_HW
positions).
The default position is SCL_HW/SDA_HW (hardware SCL).
6.11.2 5V_E
The 5V_E jumper allows control over the powering line. If you want to disable the 5V powering
line open 5V_E jumper.
The default position is closed.
6.11.3 3.3VIO_E and 3.3V_E jumpers
Important these jumpers must be moved together! Closing both of 3.3V_E and 3.3VIO_E at
the same time will damage the processor. One of them has to be open(unsoldered)Important
these jumpers must be moved together! Closing both of 3.3V_E and 3.3VIO_E at the same
time will damage the processor. One of them has to be open (unsoldered/cut). There are two
possible positions:
1) 3.3V_E closed (soldered), 3.3VIO_E open (unsoldered/cut)
2) 3.3V_E open (unsoldered/cut), 3.3VIO_E closed (soldered)
In the default variant 1) the board uses the mounted by OLIMEX DC-DC 3.3V convertor which
when the board is powered by external supply is the better alternative. However, if you use battery
it will not power the chip handling the USB and the LAN functionality. Basically the board will
lack USB-HOSTs and LAN when jumpers are set in variant 1) and the board is powered by a
battery via the BAT connector.
If you set the jumpers in 2) state the board's 3.3V will be handled by the built-in iMX233 DC-DC
but the problem is it isn't configured to be used with another chip so it doesn't provide enough
current for all the USB-HOSTs and the LAN which might cause some of the devices plugged in the
USB to lack power and also might burn the chip if too much current is drawn. However, in this 2)
mode of jumpers it is possible to power the board from a battery and still have some current on the
USB-HOSTs and the LAN. The maximum current the built-in DC-DC can provide safely is 200mA.
6.11.4 Boot mode selecting jumpers
The boot mode is discussed in chapter 6.11 of this manual.
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6.12 Additional hardware components
The components below are mounted on OLinuXino but are not discussed above. They are listed
here for completeness:
Reset button – used to reset the board
Power button – when Linux is running pressing PWR_BUT will put the board in low power mode;
when powered by battery PWR_BUT is used to initially power up the board – and pressing the
board again after it is powered will put it low power mode
Recovery pads (REC) - these can be used for attaching a recovery button; when powered by
battery the recovery button is used to bring the processor to normal power mode – you can shortcircuit the pads for this feature without having to mount a button
512 (32M x 16) MBit DDR SDRAM – the exact memory used at the moment of writing is Xylinx
H5DU5xxxyyy
LED1 + Power LED
6.13 Accessories
Here you will find additional information for Olimex products that you can use with OlinuXinoMINI.
6.13.1 USB-SERIAL-CABLE-F
The cable for the U_DEBUG interface that can be purchased for additional cost has three cables. It
is important to specify in your purchase order whether you want the USB-SERIAL-CABLE-F
variant with male of female connectors.
You will need a drivers that can be downloaded from the page of USB-SERIAL-CABLE:
https://www.olimex.com/Products/Components/Cables/USB-Serial-Cable/USB-Serial-Cable-F/.
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CHAPTER 7 BLOCK DIAGRAM AND MEMORY
7. Introduction to the chapter
On the next page you can find a memory map for this family of processors. It is strongly
recommended to refer to the original datasheet released by Freescale for one of higher quality.
7.1 Memory addresses
Below is the table with some of the most frequently used addresses. For full list of addresses check
the manual released by Freescale (Chapter Memory Map).
Decode
block
Device
Mnemonic
Start address
End address
Size
AHB
On-chip RAM
OCRAM
0x00000000
0x00007FFF
32KB
On-chip RAM alias
OCRAM
0x00008000
0x3FFFFFFF
External memory
0x40000000
0x5FFFFFFF
512MB
Default Slave
0x60000000
0x7FFFFFFF
512M
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7.2 Processor block diagram
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7.3 Physical memory map
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CHAPTER 8 SCHEMATICS
8. Introduction to the chapter
In this chapter are located the schematics describing logically and physically OLinuXino.
8.1 Eagle schematic
OLinuXino schematic is visible for reference here. You can also find them on GitHub page for
OLinuXino at our site: https://www.olimex.com/Products/OLinuXino/iMX233/iMX233OLinuXino-MINI/. The link to the GitHub is located in HARDWARE section.
The EAGLE schematic is situated on the next page for quicker reference.
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U1
GPMI_ALE/LCD_D17
GPMI_CLE/LCD_D16
GPMI_D07/LCD_D15/SSP2_DATA7
GPMI_D06/LCD_D14/SSP2_DATA6
GPMI_D05/LCD_D13/SSP2_DATA5
GPMI_D04/LCD_D12/SSP2_DATA4
GPMI_D03/LCD_D11/SSP2_DATA3
GPMI_D02/LCD_D10/SSP2_DATA2
GPMI_D01/LCD_D09/SSP2_DATA1
GPMI_D00/LCD_D08/SSP2_DATA0
LCD_D07
LCD_D06
LCD_D05
LCD_D04
LCD_D03
LCD_D02
LCD_D01
LCD_D00
110
C26 1uF
112
118
105
117
USB_DP
USB_DM
VDDA1
VSSA1
VSSA2
VSSA4
VAG
124
123
USB_DP
USB_DM
113
109
111
HPL
HPR
HP_VGND
115
114
PIN34/MIC
116
PIN33/LRADC0
PIN32/LRADC1
108
107
LINE1_INL
LINE1_INR
MIC
LRADC0
LRADC1
104
LED1
PSWITCH
119
DEBUG
I2C_SDA/GPMI_CE2N/AUART1_RX
I2C_SCL/GPMI_RDY2/AUART1_TX
PWM0/ROTARYA/DUART_RX
PWM1/ROTARYB/DUART_TX
PWM2/GPMI_RDY3
SSP1_DETECT/GPMI_CE3N/USB_ID
SSP1_CMD/SPI1_MOSI/JTAG_TDO
SSP1_DATA0/SPI1_MISO/JTAG_TDI
SSP1_DATA1/I2C_SCL/JTAG_TCLK
SSP1_DATA2/I2C_SDA/JTAG_RTCK
SSP1_DATA3/SPI1_SS#/JTAG_TMS
SSP1_SCK/SPI1_SCK/JTAG_TRST
VDAC1
PSWITCH
89
DEBUG
R2
680R/1%
10
14
13
12
11
15
16
17
PIN26/LCD_CS
PIN25/LCD_RS
PIN24/LCD_WR
PIN23/LCD_DISP
PIN22/LCD_EN/I2C_SCL
PIN21/LCD_HSYNC/I2C_SDA
PIN20/LCD_VSYNC
PIN19/LCD_DOTCLK
128
127
125
126
91
88
83
84
85
86
87
90
AUART1_RXD
AUART1_TXD
PWM0/DUART_RXD
PWM1/DUART_TXD
PIN27/PWM2
LED1
SSP1_CMD
SSP1_DATA0
SSP1_DATA1
SSP1_DATA2
SSP1_DATA3
SSP1_SCK
Close
Open
Open
Close
2
2
2
2
4
2-L
5-GND
R45
U_DEBUG
1
PWM0/DUART_RXD
2
PWM1/DUART_TXD
GND
3
4
DEBUG
PJ-W47S-05D2-LF_V2
R20
R19
SSP1_DATA3
Reset Circuit
possible to Q1
BC846B
T2
R42
R10
TV-06B
PIN9/LCD_D08/SSP2_M ISO
SSP2_SCK
47k
47k
PIN29/SOFT_SCL
XTALO
C45
C44
DM4
DP4
6
Q2
X2
7
15
X2
GND
GL850G
C37
C35
R26
C66
USB
+5VEXT
IRLML6402
FET1
R1
100nF
D
G
SHIELD
USB_A_VERTICAL
USB_HOST3
L9
1
2
3
4
C56
U5
GND_PIN
47k
2
7
8
4
R43
2.2k
BAT
1
2
R4
1.1k/1%
3.3VREG
+5VEXT
4
1
-
2
2
DW02S
LI-ION_BATTERY
3.3VREG
5V_E
Close
R3
4.99k/1%
USB_A_VERTICAL
C67
iMX233-OLinuXino-Mini
Rev.C
Page 40 of 46
IN
LX
EN
FB
3
L5
NA(2.2uH/3A/YS75/7x8)
5
GND
C64
(NA)22pF
C63
22uF/6.3V
VCC
DM
DP
GND
HN1X4
U6
(NA)SY8008C(AA)C
22uF/6.3V
WIFI
C58
C61 3.3nF
MP1482DS
L2
10uH/2.3A/YS75/7x8
R22
1k
SHIELD
3.3VIO
1
2
3
4
C70 10nF
1
3
5
6
IN
BS
EN
SW
SS
FB
GND COMP
+1
10uF/6.3V
VIDEO_CON
47pF
POWER SUPPLY CIRCUIT
VIN
6-16VDC
LIPO_BAT
2
COMPOSITE_VIDEO
BAT54S
0R
0R(Board_M ounted)
F B0805/600R/200mA(201209-601)
PWR_SEL
1-2:Closed
3.3VIO
3.3VIO
D2
1
USB
C54
R34
NA
+
C53
R33
NA
100uF/16V /LOWE S R/105C/6.3x11mm_RM2.5
PIN28/SOFT_SDA 3
PWR_JACK
YDJ-1136
USB
R32
C52
100nF
R31
+
C48
NA
NA
100uF/16V /LOWE S R/105C/6.3x11mm_RM2.5
1
2
3
4
21
#OVCUR1 19
#OVCUR2
17
PSELF 14
TEST
AUART 1_RXD
I2C_SDA
SSP2_MOSI
PIN12/LCD_D11/UEXT _CS
L3
11
12
RREF #PWREN1 22
20
#PWREN2
X1
R25
10k
PIN21/LCD_HSYNC/I2C_SDA
SHIELD
FB0805/600R/2A
8
DM3 9
DP3
Q12.000MHz/HC -49SM /SMD/20ppm/20pF
C43 33pF
C59 1uF
2
DM2 3
DP2
5V tolerant input
4
X1
AVDD
AVDD
AVDD
REC
NA(HN1x2)
R24
R12
2.2k
1
C42 33pF
13
27
DM1 28
DP1
100nF C40 1k
R13
47k
VDDXTAL
2
TV-06B
2
1
SDA_SW:Cl ose/SDA_HW:Open
USB_HOST2
R38
C46
680R/1%
DVDD
3
R29
100nF
10uF/6.3V
100nF
C47
100nF
C49
FB0805/600R/2A
PGANG #RESET
10k
47k
R36
1
5
10
R40
R39
NA
16
RM1G1
SDA_SW/SDA_HW
USB_A_VERTICAL
L4
R35
18
V33
1
2
3
4
FB0805/600R/2A
+5VEXT
25
DM0 26
DP0
R37
100k
L7
PGM_FUSES
NA(HN1X4)
V5
C55
24
NA
R30
U4
23
USB_DM
USB_DP
C57
+5VEXT
1
RA1206_(4X0603)_4B8_100K
USB_HOST1
L8
R27
10k
C50 10uF/6.3V
C51 100nF
SJTAG_PSW
1k
Composite Video
FB0805/600R/2A
1
2
3
4
R28
10k
10uF/6.3V
100nF
ISET
3
100nF
EN
2
4
6
8
10
BH10R
PIN22/LCD_EN/I2C_SCL
USB-HOSTs
1
+
OUT
NA
SY6280
IN
100uF/16V /LOWE S R/105C/6.3x11mm_RM2.5
U3
NA
C41
1
SCL_SW/SCL_HW
2
4
GND
5
PIN18/LCD_D17/USB_EN
3
SCL_SW :Close/SC L_HW :Open
T1
BC846B
+5VEXT
1
3
5
7
9
R23
C72
RESET
2
22uF/6.3V
2
XTALI
1
UEXT
2
RESET
100nF
3.3VIO
AUART1_T XD
I2C_SCL
Place T 1 and T2 as close as
SSP1_DATA0
SSP1_DATA1
POWER/REC Button
PSWITCH
3.3VREG
UEXT
R11
2.2k
8
7
6
5
4
3
2
1
PWR_BUT
3.3VREG
PJ-W47S-05D2-LF_V2
NA(WU08S)
22uF/6.3V
R7
4.7k
4
2-L
5-GND
SSP1_DATA2
SSP1_DATA3
SSP1_CMD
SD_VCC
SSP1_SCK
CD/DAT3/CS
CMD/DI
VSS
VDD
CLK/SCLK
DAT0/DO
DAT1/RES
DAT2/RES
22uF/6.3V C62
R8
4.7k
SJTAG_PSW
DEBUG
(NA)HN1X4
C69
R5
SD
MICRO
2
3
6
4
5
7
8
1
D00
0
1
0
1
0
0
1
0
JTAG
C71
100nF
10k
HN1X4
LCD DATA
D02
D01
0
0
0
0
0
1
0
1
1
0
1
1
0
0
0
1
3.3VREG
1
2
3
4
+ C68
1uF C27
LINE_IN
1
3-R
D03
0
0
0
0
0
0
1
1
SJTAG
SMBJ16A
R6
C29
SD_VCC
SSP1_SCK
22uF/6.3V
SSP1_DATA0
SSP1_DATA1
SSP1_DATA2
RM1G3 SSP1_DATA0
RM1G2 SSP1_DATA1
RM1G4 SSP1_DATA2
L6
CL470nH/0805/1.76R/250mA
470uF/25V/LOWESR/105C
10k
10k
1M
SSP1_CMD
RA1206_(4X0603)_4B8_100K
D3
1uF C28
R9
100k
R16
RA1206_(4X0603)_4B8_47K
Startup waits for JT AG debugger connection
10k
3.3VIO
120R
R4
BOOT MODE SELECT:
BOOT MODE
USB
3.3V I2C Master
3.3V SPI Flash 1 Master
3.3V SPI Flash 2 Master
3.3V NAND
SSP1_CMD
S
R44
120R
R3
RM2
GPIO
MicroSD
3.3VIO
Debug: UART or SJTAG
HEADPHONES
1
3-R
R2
3.3V SD/MMC 1 (Default !!!)
3.3V SD/MMC 2
R21
Headphones resistance Rl = R r = 16 Ohms!
PIN4/LCD_D03
PIN3/LCD_D02
PIN2/LCD_D01
PIN1/LCD_D00
R1
RA1206_(4X0603)_4B8_4.7K
MCIMX233CAG4C
Headphones and Line-In
RM3
D03_H
D02_H
D01_H
D00_H
1
1
1
1
R41
NA(1.1k/1%)
3.3V_E
1
3.3VIO
3.3VIO_E
2
1
Open
2
Close
C65
LED/GREEN/0603
LED1
LCD_CS
LCD_RS
LCD_WR
LCD_RESET/GPMI_CE3N
LCD_ENABLE/I2C_SCL
LCD_HSYNC/I2C_SDA
LCD_VSYNC/LCD_BUSY
LCD_DOTCK/GPMI_RDY3
BOOT MODE SELECT
3.3VIO
LED/RED/0603
C25 100nF
XTALO
T_P
PWR_LED
121
High to enable Resistor Boot Mode.
If pulled low, the i.MX233 will
attem pt to boot from OTP.
C38 100nF
22uF/6.3V
DCDC_VDDA
XTALO
LCD_RS must to be pulled
1k/1%
R46
C24 33pF
PIN18/LCD_D17/USB_EN
PIN17/LCD_D16
PIN16/LCD_D15
PIN15/LCD_D14
PIN14/LCD_D13
PIN13/LCD_D12
PIN12/LCD_D11/UEXT_CS
PIN11/LCD_D10
PIN10/LCD_D09
PIN9/LCD_D08/SSP2_MISO
PIN8/LCD_D07
PIN7/LCD_D06
PIN6/LCD_D05
PIN5/LCD_D04
PIN4/LCD_D03
PIN3/LCD_D02
PIN2/LCD_D01
PIN1/LCD_D00
14
17
19
25
43
NC1
NC2
NC3
NC4
NC5
2.5V
DQM0
DQS0
R18
49
VREF
R15
47k
PIN25/LCD_RS
C60
Q24.000MHz/HC-49SM/SMD/20ppm/20pF
20
19
28
29
26
27
25
24
23
22
9
8
7
6
5
4
3
2
DQM1
DQS1
22uF/6.3V
VDDXTAL
XTALI
CLKN
CLK
CKE
47
51
20
16
LDM
LDQS
NC7
NC6
46
45
44
3.3VIO
R4
120
122
Q1
53
50
120R
R3
VDDXTAL
XTALI
C23 33pF
DCDC_LN1
DCDC_LP
PIN31
PIN30
PIN29/SOFT_SCL
PIN28/SOFT_SDA
SSP2_SCK
TEST_PAD
SSP2_MOSI
R17
CS
(NA)4.99k/1%
C75 10pF
C8 100nF
97
99
82
81
34
31
33
32
21
CS
WEN
CASN
RASN
LCD_D05 is ETM Enable Bit:
IF Low -> ETM disabled
IF High -> ETM enabled
R2
L1
22uH/1.3A/SW68
GPMI_CE0N
GPMI_CE1N
GPMI_WPN
GPMI_RDN
GPMI_WRN/SSP2_SCK
GPMI_RDY0/SSP2_DETECT
GPMI_RDY1/SSP2_CMD
DCDC_GND
BATT
24
21
22
23
R14
NA(47k)
NA(22uF/6.3V) C73
C74 NA
UDM
UDQS
VSS1
VSS2
VSS3
VSSQ1
VSSQ2
VSSQ3
VSSQ4
VSSQ5
BA0
BA1
PIN6/LCD_D05
2.5V
R1
98
103
#CK
CK
CKE
26
27
1k/1%
DCDC_BATTERY
C21 22uF/6.3V
#CS
#WE
#CAS
#RAS
VDD1
VDD2
VDD3
VDDQ1
VDDQ2
VDDQ3
VDDQ4
VDDQ5
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
100nF C39
C20 22uF/6.3V
100
BA0
BA1
29
30
31
32
35
36
37
38
39
40
28
41
42
PIN18/LCD_D17/USB_EN
C19 22uF/6.3V
34
48
66
6
12
52
58
64
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10/AP
A11
A12
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
PIN20/LCD_VSYNC
PIN19/LCD_DOTCLK
BAT
BA0
BA1
CLK
CLKN
CKE
CS
CASN
RASN
WEN
DQS0
DQS1
DQM1
DQM0
U2
HY5DU121622D(L)T(P)-J
PIN13/LCD_D12
PIN14/LCD_D13
PIN15/LCD_D14
PIN16/LCD_D15
PIN17/LCD_D16
BAT
DCDC_VDDA
79
80
36
37
78
63
61
62
77
39
40
56
46
PIN12/LCD_D11/UEXT_CS
96
C18 100nF
EMI_BA0
EMI_BA1
EMI_CLK
EMI_CLKN
EMI_CKE
EMI_CE0N
EMI_CASN
EMI_RASN
EMI_WEN
EMI_DQS0
EMI_DQS1
EMI_DQM1
EMI_DQM0
1
18
33
3
9
15
55
61
PIN22/LCD_EN/I2C_SCL
PIN21/LCD_HSYNC/I2C_SDA
C17 22uF/6.3V
DCDC_VDDIO
100nF C36
DCDC_VDDA
95
C16 22uF/6.3V
2.5V
10uF/6.3V
C15 22uF/6.3V
DCDC_VDDD
PIN10/LCD_D09
PIN11/LCD_D10
3.3VIO
94
C14 100nF
2
4
5
7
8
10
11
13
54
56
57
59
60
62
63
65
PIN9/LCD_D08/SSP2_MISO
C13 22uF/6.3V
VDD5V
100nF C34
C12 100nF
BAT
VDD4P2
102
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
100nF C33
DCDC_VDDD
101
41
43
42
44
47
48
49
50
51
52
54
55
57
58
60
59
10uF/6.3V
1N5819(SS14)
C11 22uF/6.3V
EMI_D00
EMI_D01
EMI_D02
EMI_D03
EMI_D04
EMI_D05
EMI_D06
EMI_D07
EMI_D08
EMI_D09
EMI_D10
EMI_D11
EMI_D12
EMI_D13
EMI_D14
EMI_D15
100nF C32
C9 22uF/6.3V
C10 22uF/6.3V
VDDM/LRADC4
100nF C31
106
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
PIN1/LCD_D00
PIN2/LCD_D01
PIN3/LCD_D02
PIN4/LCD_D03
PIN5/LCD_D04
PIN6/LCD_D05
PIN7/LCD_D06
PIN8/LCD_D07
C7 100nF
VDDIO_EMIQ
VDDIO_EMI1
VDDIO_EMI2
512Mb DDR SDRAM (32Mx16)
100nF C30
38
45
53
C22 22uF/6.3V
+5VEXT
VDDIO33_1
VDDIO33_3
+5VEXT
C5 22uF/6.3V
VSSD2
VSSD1
18
92
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
VIN
C4 22uF/6.3V
35
30
76
75
74
73
72
71
70
69
68
67
66
65
64
39
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1
C3 22uF/6.3V
EMI_A00
EMI_A01
EMI_A02
EMI_A03
EMI_A04
EMI_A05
EMI_A06
EMI_A07
EMI_A08
EMI_A09
EMI_A10
EMI_A11
EMI_A12
GPIO_CON
BH40R
22uF/6.3V
3.3VIO
C6 100nF
D1
VDDD1
VDDD3
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
22uF/6.3V
2.5V
1
93
C2
3.3VREG
PIN34/MIC
PIN33/LRADC0
PIN32/LRADC1
PIN31
PIN30
PIN29/SOFT_SCL
PIN28/SOFT_SDA
PIN27/PWM2
PIN26/LCD_CS
PIN25/LCD_RS
PIN24/LCD_WR
PIN23/LCD_DISP
DCDC_VDDD
C1
OLIMEX
OLIMEX© 2015
IMX233-OLinuXino-MINI user's manual
8.2 Physical dimensions
Note that all dimensions are in inches.
The three highest elements on the board in order from the tallest to the shortest are: capacitor C68 –
16.2mm (0.640'') over the pcb; USB host connectors – 13.6mm (0.525''); composite connector –
12.0mm(0.464'').
Page 41 of 46
OLIMEX© 2015
IMX233-OLinuXino-MINI user's manual
CHAPTER 9 REVISION HISTORY AND SUPPORT
9. Introduction to the chapter
In this chapter you will find the current and the previous version of the document you are reading.
Also the web-page for your device is listed. Be sure to check it after a purchase for the latest
available updates and examples.
9.1 Document revision
Revision
Changes
A,
02.07.12
Initial Creation
B,
03.07.12
Page 21 – added info about the U_DEBUG
Page 34 – info about internal and external
DC-DC adjusted
C,
05.07.12
Page 6 – corrected info about different WIFI
options
Page 20 – adjusted information about using
U_DEBUG
Various – adjust various small mistakes
D,
18.07.12
Pages 10, 11 – Added info about fuse
programming
Modified Page#
All
Continues on the next page
Page 42 of 46
21.34
6, 20, various
10, 11
OLIMEX© 2015
IMX233-OLinuXino-MINI user's manual
Continued from previous page
Revision
E,
29.10.12
Changes
Page 16, 17, 18 – Fixed wrong info about the
LQFP128 package of iMX233
Modified Page#
16, 17, 18
F,
04.01.12
Page 10 – Wrong wiring for fuse burning fixed
Page 43 – Changed schematic with latest one
Page 46 – Added info about the latest
hardware revision
10, 43, 46
G,
21.03.12
Page 6 – fixed the voltages for -MINI and
-MAXI in the comparison table
Page 14 – added info on how to setup I2C, SPI
and UART from the UEXT
Various – updated links
6, 14
H,
06.04.15
Fixed the GPIO table; there wasn't GPIO #20
29, All
Formatting improvements
Page 43 of 46
OLIMEX© 2015
IMX233-OLinuXino-MINI user's manual
9.2 Board revision
Revision
C
D
E
Notable Changes
- Initial release of the board
- R31 to R38 are changed to NA, because into the newest GL850G
datasheet(schematic) they are removed
- In addition PSELF is connected to V33 pin through 10k resistor
with the aim of GL850G to be set in self-powered mode
- Altered inductors: L1,L2 i L5 to 7x8mm package.
- All capacitors 22uF/0805 are now changed to 22uF/0603
- Added prints of the names of WIFI and PGM_FUSES connectors
- New powering scheme with jumpers for the WIFI
- Removed FET1 due to resistance and because TVS works also as a
protection
- PWR_LED and LED1 were too bright, the resistor is now 2.2k
- WIFI connector has been moved with 1mm near the quartz so it is
far enough from the capacitors
- Added 100k pull-down resistor on the debug line. According to
the IMX23RM, page 1368:
If the DEBUG pin is unused, Freescale recommends pulling the
DEBUG pin to ground through a 100K resistor.
- Changed the text DEBUD to DEBUG into the SJTAG's connector
bottom silk.
- Added Schottky diode and increased R9 to 4.7K because of bug
that might appear if using
- Added C75(10pF)
- Added ferrite bead 2A on the 4th USB of the hub also (wifi only)
- Moved the print of the names of PWR_JACK and 6-16VDC since they
were overlapping; The Composite Video print is also adjusted.
LINE_IN and HEADPHONES are also moved a bit. R44 and R55 too.
- The jumpers SW_SCL/HW_SCL and SW_SDA/HW_SDA position is changed
to default HW (hardware SCL)
- PGM_FUSES line is changed 10mils to the upper side, C48 is
moved 5mils to the bottom edge.
Page 44 of 46
OLIMEX© 2015
IMX233-OLinuXino-MINI user's manual
9.3 Useful web links and purchase codes
The web page you can visit for more info on your device is
https://www.olimex.com/Products/OLinuXino/iMX233/iMX233-OLinuXino-MINI/,
https://www.olimex.com/wiki/IMX233
You can get the latest updates on the software at: https://github.com/OLIMEX/OLINUXINO.
The OLinuXino Linux images sources: https://github.com/Freescale/fsl-community-bsp-platform.
ORDER CODES:
iMX233-OLinuXino-MAXI – the best version of OLinuXino featuring Ethernet controller
iMX233-OLinuXino-MINI – the mini version of the single-board computer
iMX233-OLinuXino-MICRO – tiny in size, tiny in price and perfect for breadbording
iMX233-OLinuXino-MINI-WIFI – the MINI version of OLinuXino + embedded RTL8128CU
WIFI module
iMX233-OLinuXino-SD – SD card with the Linux image which can be used with every board
from the OLinuXino family
MOD-WIFI_RTL8188 – external USB WIFI modem with RTL8188 chip
USB-SERIAL-CABLE—USB serial console cable for U_DEBUG
SY0612E – power supply adapter 12V/0.5A for iMX233-OLinuXino-MAXI and iMX233OLinuXino-MINI (Will not work with OLinuXino-MICRO)
SY0605E – power supply adapter 5V/1A for iMX233-OLinuXino-MICRO (Will not work with
iMX233-OLinuXino-MAXI and iMX233-OLinuXino-MINI)
The latest price list can be found at https://www.olimex.com/prices.
How to order?
You can order directly from our web shop or from any of our distributors.
The full list of distributors can be found here: https://www.olimex.com/Distributors/.
Visit https://www.olimex.com/ for more info.
Page 45 of 46
OLIMEX© 2015
IMX233-OLinuXino-MINI user's manual
9.4 Product support
For product support, hardware information and error reports mail to: support@olimex.com. All
document or hardware feedback is welcome. Note that we are primarily a hardware company and
our software support is limited. Please consider reading the paragraph below about the warranty of
Olimex products.
All goods are checked before they are sent out. In the unlikely event that goods are faulty,
they must be returned, to OLIMEX at the address listed on your order invoice.
OLIMEX will not accept goods that have clearly been used more than the amount needed to
evaluate their functionality.
If the goods are found to be in working condition, and the lack of functionality is a result of
lack of knowledge on the customers part, no refund will be made, but the goods will be returned
to the user at their expense.
All returns must be authorized by an RMA Number. Email support@olimex.com for authorization
number before shipping back any merchandise. Please include your name, phone number and order
number in your email request.
Returns for any unaffected development board, programmer, tools, and cables permitted within 7
days from the date of receipt of merchandise. After such time, all sales are considered final.
Returns of incorrect ordered items are allowed subject to a 10% restocking fee. What is
unaffected? If you hooked it to power, you affected it. To be clear, this includes items that
have been soldered to, or have had their firmware changed. Because of the nature of the
products we deal with (prototyping electronic tools) we cannot allow returns of items that have
been programmed, powered up, or otherwise changed post shipment from our warehouse.
All returned merchandise must be in its original mint and clean condition. Returns on damaged,
scratched, programmed, burnt, or otherwise 'played with' merchandise will not be accepted.
All returns must include all the factory accessories which come with the item. This includes
any In-Circuit-Serial-Programming cables, anti-static packing, boxes, etc.
With your return, enclose your PO#. Also include a brief letter of explanation of why the
merchandise is being returned and state your request for either a refund or an exchange.
Include the authorization number on this letter, and on the outside of the shipping box.
Please note: It is your responsibility to ensure that returned goods reach us. Please use a
reliable form of shipping. If we do not receive your package we will not be held liable.
Shipping and handling charges are not refundable. We are not responsible for any shipping
charges of merchandise being returned to us or returning working items to you.
The full text might be found at https://www.olimex.com/wiki/GTC#Warranty for future reference.
Page 46 of 46
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