AM3352-SOM user`s manual
Contents
1. AM3352 SOM System on Module Linux enabled board USER S MANUAL Document revision B September 2015 Designed by OLIMEX Ltd 2015 lead free All boards produced by Olimex LTD are ROHS compliant OLIMEXO 2015 AM3352 SOM user s manual DISCLAIMER O 2015 Olimex Ltd OlimexG 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 design of AM3352 SOM development board is considered intellectual property to Olimex Hardware schematics are shared with the customers However the board layout files are considered copyright material and would not be shared The hardware design of AM3352 SOM EVB development board is considered open source hardware The source design files are published online and accessible by everyone 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 o2. OTG PHY 2 Memory interface mDDR LPDDR DDR2 DDR3 DDR3L EMAC 2 port 10M 100M 1G IS aie A and switch 16 bit 200 266 400 400 MHz MIL RMII RGMII NAND and NOR 16 bit ECC Page 19 of 36 OLIMEXO 2015 AM3352 SOM user s manual CHAPTER 5 CONTROL CIRCUITY 5 Introduction to the chapter Here you can find information about reset circuit and quartz crystals locations the power supply circuit is also briefly discussed 5 1 Reset The board has hardware reset is handled by MCP130T 300I TT a voltage supervisory device designed to keep a microcontroller in reset until the system voltage has reached the proper level and stabilized The processor ball responsible for the reset of the board is ball A10 WARMRSTn There is a hardware reset button placed on the board The name of the button is RST It is a good practice to perform software reset of the board Performing a hardware reset or power cycling the board reset by disconnecting and re applying the main power supply might lead to software corruption of the operating system of choice 5 2 Clocks RTC clock 32 768Hz is connected to balls A4 and A6 24 MHz quartz crystal Q2 is found at balls V11 and V10 of the AM3352 processor 5 3 Power supply circuit A stand alone AM3352 SOM consumes around 0 10A when connected to a 5V voltage source provided at UARTO pins GND and 5V During heavy computational tasks the processor consumption might ra
3. If you are looking for open source design of the processors used please check the OLinuXino boards OLinuXino board designs are fully open source but harder to implement in own solutions and require more of a hardware experience to do so Nevertheless OLinuXino boards are pretty good choice for evaluating the capabilities of the embedded processors Page 5 of 36 OLIMEXO 2015 AM3352 SOM user s manual 1 2 Target market of the board Using the AM3352 SOM as a stand alone development board would be more suitable for users with some hardware experience or people already familiar with other single board Linux boards and designs As mentioned in the previous chapter the board is meant to be implemented in a hardware design It is highly recommended to use AM3352 SOM with AM3352 SOM EVB initially unless you have previous experience with SOM or OLinuXino boards manufactured by OLIMEX Note that in the OLIMEX web shop the product named AM3352 SOM EVB includes the main board named AM3352 SOM The board s target market widens drastically when AM3352 SOM is used altogether with AM3352 SOM EVB In that case the combination is suitable for embedded programming enthusiasts Linux gadget fans and also professionals since its low cost makes it very good solution for application orientated embedded systems The reason for this alteration is the additional hardware that AM3352 SOM E VB it provides direct VGA output and easier ways to connect
4. p RENE PO A SPIO D1 MOSI 7 11 13 15 17 19 21 P PO 5 SPIO CSO m P1_8 UART4_RXD O P3_5 I2C0 SDA Pint 1 4 6 EY 18 P3 16 SPI1 D1 MOSI 20 P3 17 sPI1 CsO E 24 26 28 30 32 34 36 38 40 gt PO 20 EMU3 P3 21 LED3 25 27 P3 8 EMU1 SYS RESETN JTAG TRST T 5 ms 5 5 T JTAG TMS VREFP AIN7 AIN6 GNDA 00 oo n z Iw pa ev o 3 pov 0 0000 5 Pe_a5 UARTI_TXD 7 jeeisrme2sc 9 Pe 3 5PI0D MISO 11 P 2 SPIOSCK 13 Pa_9 uART4 DO 0 15 Jes e 12c0 sCo 17 P3 15 SPILD MISO 19 s u sPri CK 00 Ds pcm p 3 20 LED2 O 25 p37 em gt 27 poz PMo oUT 23 pre Tek gt 3 mem gt 33 pae mo gt 35 fam EATEN 39 vh a Page 27 of 36 OLIMEXO 2015 AM3352 SOM user s manual 6 6 AM CON LCD 40pin connector The AM LCD CON pins are led out on a separate 40pin connecter for the ease of connecting an LCD We have tested the ability of the board to interact with such a display They allow the user to attach additional hardware check readings or perform hardware debug Important you need additional adapter board and two different 40PIN ribbon cables to connect an Olimex display and the LCD CON The evaluation board AM3352 SOM EVB provides a 0 1 step LCD connector which eases the hardware interfacing between the board and the display The LCD connector is suitable but not plug and pl
5. RX line of the target board The BLUE wire should go to a target s GND line Page 21 of 36 OLIMEXO 2015 AM3352 SOM user s manual The UARTO header can also be used to power a stand alone AM3352 SOM This is the recommended way of powering a standalone AM3352 board The voltage input pin is named 5V and it is suitable for 5V DC external power supply unit One of the two GND pins can be used as ground The required current may vary depending on the peripherals connected to the board The power supply should be capable of providing at least 2 5W For the powering we are only interested in the 5V pin and the GND pin The signal names are printed near the pins make sure to inspect the names before connecting the supply More info about the power supply can be found in chapter 5 of this manual 6 3 MicroSD card connector The micro SD card slot is primarily used for booting the operating system The board works with micro SDHC cards up to 32GB of storage Note that the speed class rating of the card used affect the performance of the operating system Higher speed class class rating is better As a general precaution be careful with the SD cards you purchase There is a big percentage of fake cards due to the low effort required to counterfeit popular brands and the big demand for SD cards worldwide When in doubt try the same operation with another card from another brand Olimex sells microSD cards with Linu
6. get acquainted with the main parts of the board Note the names used on the board might differ from the names used below to describe them For the actual names check the AM3352 SOM board itself 2 1 Layout top view The picture below shows the top side of the board and highlights the most important parts GPIO3 CONNECTOR GPIO2 CONNECTOR DEBUG HEADER TX RX GND GND 5V LCD CONNECTOR GPIO1 CONNECTOR The four plastic connectors AM CON LCD AM CON GPIO1 AM CON GPIO2 AM CON GPIO3 have 0 05 step between the pinholes These connectors are typically used to connect to AM3352 SOM EVB The pins of the UARTO header consist are suitable for powering the board 5V and GND and also for serial connection TX RX GND Page 8 of 36 OLIMEXO 2015 AM3352 SOM user s manual 2 2 Layout bottom view The picture below shows the bottom side of the board and highlights the most important parts MICROSD CARD CONNECTOR in NMI BUTTON RESET PENGENE E E ES TET PNE BUTTON ERES IR e EC ord bet lt 7 Peete USER LED ev 0 5 BOARD NAME AND REVISION The power LED indicates whether the board is powered properly It is not connected to a processor pin The user LED is connected to processor ball B12 and can be programmed Page 9 of 36 OLIMEXO 2015 AM3352 SOM user s manual CHAPTER 3 SETTING UP THE AM3352 SOM BOARD 3 Introduction to the chapter This section helps you set up the SOM development board f
7. need to consider that the levels at the board s connector UARTO are in CMOS level 3 3V and you would need a convertor to bring them to the TTL level of your computer or cable That is true for the RX and TX also It is highly recommended to have an USB SERIAL CABLE F or similar product at hand when debugging the video output is not always reliable and if you set wrong display settings you might be unable to recover the settings without a proper UARTOconnection For more information please refer to chapter 3 5 Interacting with the board 6 2 UARTO header The pins of the UARTO header might be used for serial communication between the board and a personal computer They can also be used to power the whole AM3352 SOM board In the case of a video output problem a cable might provide the needed feedback and greatly reduce the efforts needed to repair the board or to adjust the software setting Note that by default only UARTO is defined as a port suitable for serial debug You can use our USB SERIAL CABLE F for debugging AM3352 SOM EVB provides extra UARTO connector pins suitable for serial connection These serve the same debug function as the ones on AM3352 SOM Consider the table on the next page when connecting the USB SERIAL CABLE F to the board Remember to refer to the wire color code of the cable The RX line of the cable GREEN wire should go to TX line of the target board the TX line of the cable RED wire should go to the
8. peripherals to the board Generally the processor s resources become easier to access In which cases a stand alone AM3352 SOM without AM3352 SOM EV B board might not be suitable for you 1 If you are a beginner with single board Linux computers 2 If you are an OSHW purist 3 If you are looking for more straight forward software development and you are not going to implement the AM3352 SOM in own hardware products In the cases above it might be a better idea to take a look at the OLinuXino boards like A20 OLinuXino MICRO or A20 OLiuXino LIME2 1 3 Features of AM3352 SOM The AM3352 SOM board has the following set of features Texas Instruments AM3352 Cortex A8 processor running at 1GHz e 512MB DDR3 memory Power supply DCDC MicroSD card connector e UART console User LED Power LED e NMI button Reset button 4 connectors X 40 pin 2 0 05 step Dimensions of the SOM part 2 4x1 5 61x38 mm Page 6 of 36 OLIMEXO 2015 AM3352 SOM user s manual 1 4 Board variants At the time of writing this document AM3352 SOM is the only Olimex made board featuring Texas Instruments AM3352 Other SOM boards that might be compared to functionality are the well supported A20 SOM and the new powerhouse RK3188 SOM Another Olimex board with close characteristics is A13 SOM board The performance of Texas Instrument s AM3352 and Allwinner s A13 is nearly identical The two main differences are the A13 is chea
9. software support for both boards is open source and released under GPL license 1 1 Introduction to SOM System On a Module OLIMEX System on Module SOM boards are powerful Linux capable boards They follow a low cost modular design which allows rapid product development Each of these boards has two parts a main part which nests the processor the memory and the power control unit and the peripheral part which contains the USB ports the video output and most of the connectors SOM designs are targeted at customers who want to apply custom modifications and own solutions based on a specific processor without having to deal with multi layer PCBs with controlled impedance and BGA assembly This makes it possible to create simple boards that might be manufactured by your local board manufacturer containing only the peripherals you need with the dimensions and shape suitable for your specific solution Both the main part and the peripheral part of the SOM system have support in the official Android and Debian images distributed by Olimex and maintained by Olimex and the Linux community These images are typically available at the wiki articles of the boards The peripheral part of the SOM design is considered Open Source HardWare OSHW and the customer has access to the board source files that we used to manufacture it The part of the design that has the main microcontroller is considered proprietary design and design files would not be shared
10. touchscreen component However there is only a 40 pin female connector AM CON LCD with a 0 05 step Unlike other OLIMEX Linux enabled boards the AM3352 SOM lacks a row of pins that allows the user to connect a display out of the box The board s AM CON LCD connector is female and has a smaller 0 05 step note that if you are using AM3352 SOM mounted on AM3352 SOM EVB a 0 01 LCD connector would be available This means that if you use a stand alone AM3352 SOM for LCD output and a display made by OLIMEX you would need additional 2x20 MALE MALE 0 05 header to convert the female connector to male The 0 05 headers are somehow hard to find so we sell them here 0 05 step connectors You would also need a compatible cable between the board and the display The current generation of OLIMEX made displays have both 0 1 and 0 05 step connectors The cable used for connection depends on the specific board you are using and Page 16 of 36 OLIMEXO 2015 AM3352 SOM user s manual more specifically it depends on the pitch of the LCD connector of the board We have two cables both 40 pins ones but one for the bigger pitch 0 1 and the other for the smaller one 0 05 Each of the displays listed in the table above has two connectors suitable for both cables CABLE IDC40 15cm 15cm long cable suitable for 0 1 step connectors Product page CABLE 40 40 10CM 10cm long cable suitable for 0 05 step connectors Product page The displays reco
11. 2 SOM EVB RESPECTIVELY Page 2 of 36 OLIMEXO 2015 AM3352 SOM user s manual Table of Contents DISCLAIMER NR 2 CHAPTER 1 OVERVIEW RR cette react ci saa Cup LE ce a aa aea a ia 5 1 introduction t the dope uvaussanomunsjaetukemnnj bn ia aae 5 1 2 Target market of the bord uwuausunnsisssnimsunnnsnnndnvunisminsvnnmisvvvvvvv vn 6 1 3 Features of AMII52 SOM RR M 6 EG ERE 7 1 5 Board versions used in the mantiall sssssssssssssssssssssssssssssssssssssssssssssssssssescsssccsssossssssees 7 HR GEER 7 CHAPTER 2 BOARD DESCRIPTION sva iini tr iae aree Ese omkved 8 2 Introduction to the chapteE iiiueiiciiu sce tseces ec cive este buvee sac Coev Gase sbe cata s ve pe iieo ac La VN E STER VE Rand Us 8 CHAPTER 3 SETTING UP THE AM3352 SOM BOARD e eee eee 10 3 Introduction to the chaptet rico caso coa cocer vea co a Vana eee eae br a epe aas cosa spa ranas sans sa naa eR DEO 10 RE SREDBDEL RR 17 CHAPTER 4 THE AM3352 PROCESSOR essoeessovvsseevessnssevesseeessennssevseseeseeesseseese 18 4 Introduction to the chapter sii dsicccisccccrssvissercsvicssasvdasseiessiacvadsscssstesvisssadsdassvresvasevadsuisivascassieseve 18 CHAPTER 6 CONNECTORS AND PINOVUT e eene ooo nonna anten noun 21 6 Introduction to the Chapter ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
12. RTO DEBUG connector You would also need to connect the GND line of you supply to one of the GND pins of the same connector The minimum power that your supply should be able to prove is 2 5W equivalent of 0 5A of current at 5V of voltage Note that there is no standard jack for the powering circuit but you might add own DC power jack Do not provide AC voltage to the AM3352 SOM board Do not provide more than 5V of voltage directly to the AM3352 SOM board Providing 12V would instantly cause permanent hardware damage Page 12 of 36 OLIMEXO 2015 AM3352 SOM user s manual 3 3 2 Mounted powering Typically AM3352 SOM gets evaluated when mounted atop AM3352 SOM E VB In this case the former is powered via the latter The power line altogether with a number of other important processor lines is transferred via the 40 pin headers AM3352 SOM receives power from AM3352 SOM EVB but what are the requirements to power AM3352 SOM EVB You need to provide 6V to 16V DC voltage to the power jack named PWR of AM3352 SOM EVB board The DC barrel jack has 2 0mm inner pin and 6 3mm hole More information about the exact component might be found here https www olimex com wiki PWRJACK For the European customers we also stock and sell basic power supply adapters compatible with the power jack Do not provide AC voltage to the AM3352 SOM EVB board Do not provide more than 16V of voltage to the AM3352 SOM EVB board The typical consumption o
13. ay due to the different pin step for a number of Olimex displays and touchscreen panels with different native resolution the smallest available is the 4 3 one called LCD OLinuXino 4 3TS with native screen resolution of 480x272 through the 7 one named LCD OlinuXino 7 with 800x480 to the 1024x600 10 1 LCD OlinuXino 10 The official Linux image of the board lacks ready touschreen support Full list of recommended displays for the board might be found in chapter 3 7 Connecting and calibrating a display alv oeeo afew foromer crcurr ea peer alen forouer cancun enoma fm emne fr asom jus noo mm spo fe enon f uprsnop qm f apno mm feen mi ne aperon fm semen h faens fn sea fra anos ooo asprisueons je e erieno ee fa apo znow po eee ju xmrusuom jus apoo je aspeanc pia fa aspe eo ois mjeaenc ma wa ponnoos p anonse fis s ren jus xcu oak s asno fs ae ae S aspeisnco muren us seeezmeon jas jfr 0 ym E faer ofre e ae fa Pins 33 and 34 do not reach the processor due to the missing resistors r29 and r32 The values of these pins can be used to change the scanning mode orientation of the Olimex displays dynamically The default scanning mode is up to down right to left Refer to the display datas
14. bles 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 shippin
15. cessor refer to the information for the ZCZ ball layout Of particular importance is that Texas Instruments provides excellent documentation and support for AM3352 A short list of features might be found below CPU ARM Cortex A8 2 1000 MHz On chip L1 cache 64 KB On chip L2 cache 256 KB GPU Graphics accelerator SGX530 LCD display option 2xUSB ports 3xMMC interfaces 6xUART 3xI2C 3xEnhanced high resolution PWM modules ADCx8 channel 12 bit 2xCAN RTC General purpose memories supported 16 bit GPMC NAND flash NOR flash SRAM DRAM supported 16 bit LPDDR 400 DDR2 532 DDR3 800 More information about the features of the microprocessor can be found in its documentation available at the web site of its manufactuerer Texas Instruments http www ti com lit ds symlink am3357 pdf Please note that not all processor capabilities are properly supported in the official Linux image Page 18 of 36 OLIMEXO 2015 AM3352 SOM user s manual 4 2 Block diagram The block diagram was taken from the based on the AM3352 s documentation ARM Graphics Display Cortex A8 PowerVR 24 bit LCD controller Up to 1 GHz SGX 3D GFX Touch screen controller PRU ICSS 32K and 32K L1 SED EtherCAT PROFINET 256K L2 EGG EtherNet IP 176K ROM 64K RAM and more eCAP x3 T ADC 8 channel oe SPIx2 air SAR SDIO x3 PC x3 GPIO VeAS 2 m 4 channel SHRPWM x3 CAN x2 Crystal Ver 2 A and B eQEP x3 Osciliator x2 USB 2 0 HS PEN
16. e name of debian 2g img would be downloaded to a microSD card connected to a Linux machine using one of the following commands dd bs 4M oflag sync if debian 2g img of dev sdX or cp debian 2g img dev sdX where X is the uSD card The tips above can also be used to prepare a microSD card with an Android image suitable for a microSD card Q How to generate boot able SD card Linux image for AM3352 SOM Build instructions and required files for the latest Debian images might be found at the wiki page of the board The step by step instructions are available here https www olimex com wiki Building Debian AM3352 SOM Page 34 of 36 OLIMEXO 2015 AM3352 SOM user s manual I can t get the Ethernet working What is wrong with my board The board AM3352 SOM E VB has two Ethernet ports LANI is configured with default static IP address of 192 168 1 254 LAN is configured as DHCP IMPORTANT You need VLAN enabled to establish a proper connection to the board as defined in IEEE 802 1Q Make sure your hardware is compatible with IEEE 802 1Q Make sure you have to enabled VLAN for the router switch bridge or the network card otherwise the Ethernet connection to the AM3352 SOM EVB board will fail You can find a lot guides online on how to enable VLAN or VLAN tagging for your specific hardware and operating system I have LCD connected and configured It keeps shutting down after approximately 10 minutes How can I remove this sleep
17. e suggested items can be purchased by Olimex for instance USB SERIAL CABLE F female USB serial console cable provides the easiest way of debugging AM3352 DEBIAN SD a tested class 10 micro SD card suitable for AM3352 SOM with the latest by the time of leaving Olimex facilities official Debian Linux release Page 11 of 36 OLIMEXO 2015 AM3352 SOM user s manual 3 3 Powering the board The powering requirements of the AM3352 SOM are different depending on whether you use it in stand alone mode or mounted atop AM3352 SOM E VB The sub chapters below deal with both scenarios 3 3 1 Stand alone powering If you use the board in stand alone mode e g it is neither attached to AM3352 SOM E VB nor to any other board of peripherals there are fewer options for powering it Consider that you might need additional cables or connectors You have the following options of powering the board 1 provide 5V DC voltage to pin 5V at the UARTO header connect ground to pin GND of the same header 2 provide 5V DC voltage to pin 1 and GND to pin 2 of any of the following headers AM CON LCD header AM CON GPIO1 AM CON GPIO2 AM CON GPIO3 IMPORTANT provide power supply to only one of the mentioned pins providing 5V to more than one header simultaneously would lead to over voltage The default way of powering the board is using external power supply In that case you would need to provide 5V DC to the 5V pin of the UA
18. ee iR M Soa DR Og 32 8 2 Board revislon iiiiiiiicciciaincucsiib2os303 0010102050100 030419100 00 0 0 0 001 0 eee e Pe uses a E ee t esa v EDU ed ea e dabo 32 8 3 Useful web MKS 22 22562202 20060825 2 aae F eso bosadas a Ca Rae cR Za Docs sacs uaa Po Sas boo Pv de d sw aD UP eod ed tues 32 Page 4 of 36 OLIMEXO 2015 AM3352 SOM user s manual CHAPTER 1 OVERVIEW 1 Introduction to the chapter Thank you for choosing this single board computer from Olimex This document provides a user s guide for the AM3352 SOM board As an overview this chapter gives the scope of this document and lists the board s features The document s organization is then detailed The AM3352 SOM development board enables code development of applications running on the AM3352 microcontroller manufactured by Texas Instruments from the U S A The AM3352 SOM board is typically used together with AM3352 SOM E VB board which features most of the peripherals and connectors needed for full evaluation and utilization of the AM3352 processor The hardware design of AM3352 SOM development board is considered intellectual property to Olimex The hardware layout design files are considered copyright material and would not be distributed The original schematics however are distributed in a popular file format AM3352 SOM EVB board is an open source open hardware project and all documentation used to manufacture the board is available to the customer The
19. f AM3352 SOM EVB AM3352 SOM is around 0 20A 10V but might reach peaks up to 0 25A 10V during initial boot These values were measured without anything else connected to the board e g no keyboard no mouse no LCD display etc The board can NOT be powered by a personal computer using the USB OTG connector During operation it is typical for some integrated circuits to appear hotter than others This is perfectly normal for some electronic components for instance the voltage regulators and the main processor 3 4 Button functions The board comes with two buttons listed bellow RST reset button used for hardware reset of the board before using it please refer to the note below NMI non masked interrupt button the button is not used in the default Linux image however it is required for some distributions It is always recommended to perform a software turn off of the board or software reset Then you are free to remove the power supply If you disconnect the power supply either the USB or the power jack before turning off the board you may corrupt your SD card Page 13 of 36 OLIMEXO 2015 AM3352 SOM user s manual 3 5 Interacting with the board The typical and recommended way of interacting with AM3352 SOM board is via a serial cable connected between the UARTO header and a personal computer You would probably need a cable suitable for such a connection due to the fact that most personal computer
20. g 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 36 of 36
21. heet for possible values Refer to the display schematic to further trace Page 28 of 36 OLIMEXO 2015 AM3352 SOM user s manual the lcd signals they can be found on gpio1 pins 2 15 and 2 24 Pin 36 provides option on which signal would drive the backlight By default pwm0 out is chosen The other two options provided are p1 18 ehrpwm1a txd3 and p3_15 spil_dO miso You would need to remove r38 and place it on the pads of either r36 or r37 Placing r36 would enable p1_18 ehrpwm1a txd3 Placing r37 would enable p3_15 spil_dO MISO Warning Re configuration might brick your device It is neither needed for typical operation nor recommended LCD data pins Z0 to 415 are used during initial boot to set the system boot configuration The default boot priority set by LCD data pins is usb0 nand spi0 mmcO0 Refer to the am3352 documentation for more information about the system boot configuration 6 7 Jumper description The board has two SMT jumpers Both are related to the optional NAND memory These jumpers and their functions are not important for the general use of the board If you feel insecure of your soldering cutting technique it is better not to try to adjust the jumper since it is possible to damage the board Board jumpers By default both jumpers are open You would need to solder those in order to use the NAND memory pads SMT Note that you would also need to solder NAND memory and the suitable components of the ci
22. icro SD card with the latest by the time of leaving the Olimex facilities official Linux release LCD OLINUXINO 4 3TS low cost 4 3 LCD display with touchscreen component 480x272 LCD OLINUXINO 7 low cost 7 LCD display 800x480 LCD OLINUXINO 10 low cost 10 LCD display 1024x600 ALUMINIUM HEATSINK 20x20x6MM heatsink radiator for better processor heat dissipation Page 33 of 36 OLIMEXO 2015 AM3352 SOM user s manual 8 6 Frequently asked questions Q I powered my board and then nothing happened What might be the problem A This might be due to a number of reasons but it is recommended to try the following 1 Download latest official Debian image from our wiki and upload it to an SD card again There are instructions how to do it in the other questions below Try if the board works now 2 Check if your power supply provides enough current try with different better power supply 3 Double check the connections at the UARTO connector Q How do I write the Linux image to a micro SD card to use with my AM3352 board A First visit the wiki article for the board and download the archive with the image Then write the Linux image to a microSD card Under Windows we use Win32 Disk Imager http sourceforge net projects win32diskimager Download Win32 Disk Imager software Insert card Start program Select file Click write To write a Linux image to an SD card under Linux For instance an image with the fil
23. ise up to 0 15A of current tested at 5V of voltage with top dO The current consumed might have peaks as high as 0 20A during start up when different on board modules are initialized Make sure your power supply is capable of providing at least 0 5A of current at 5V of voltage 2 5W For more info on how to power the board refer to chapter 3 3 Powering the board Page 20 of 36 OLIMEXO 2015 AM3352 SOM user s manual 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 A short summary of the pinout might be found in a separate document here https www olimex com Products SOM AM3352 AM3352 SOM resources AM3352 SOM GPIOs pdf 6 1 Communication with AM3352 SOM in Linux The direct access method to the Linux command interface is via the serial interface You would need to use the pins of the UARTO connector debug connector and then use your favorite terminal program puTTy minicom picocom teraterm etc to access the command line interface of the Debian the data send commands You can use USB SERIAL CABLE F with the UARTO pins this allows you to establish connection to a personal computer with a free USB port If you decide to make your own cable you would
24. it you can set the preferred video output medium and video output resolution The script requires root privileges It is very good idea to use a serial cable for connection to the board from a personal computer since in this case you are not dependent on the current video output resolution a cable like USB SERIAL CABLE F When the board boots type sudo change display am3352 sh This would bring up the help information about the usage of the script You can see that the LCD and VGA resolutions supported The supported resolutions that you can select are LCD OUTPUT 1 YxY where YxY can be VGA OUTPUT v YxY where YxY can be 480x272 800x600 800x480 1024x768 1024x600 Page 15 of 36 OLIMEXO 2015 AM3352 SOM user s manual For example to set LCD video otuput suitable for 7 inch display 800x480 write sudo change display am3352 sh 1 800x480 At this point you would be asked if you wish to reboot the board The video output changes would be applied after a reboot so it is advised to reboot the board at this point The usage f the script is shown in the picture below d COM33 PuTTY ke In case you need a custom video output resolution you would need to edit the kernel There are no configuration files that can be easily edited to achieve the desired video output 3 8 Connecting and calibrating a display One of the ways to interact with the board is via an external display with or without
25. ity ones might slow down the whole system You can find the table with the pinout of the microSD connector on the next page e overarm sus ee Ceo car ebarms mean is ejm vereren fme soor as Page 23 of 36 OLIMEXO 2015 AM3352 SOM user s manual 6 5 GPIO connectors There are 3 GPIO connectors located on the bottom side of AM3352 SOM They ease the access to processors pins These connectors and connector AM CON LCD also provide a way to mount the board to a board of peripherals like AM3352 SOM EVB The only power line at the GPIO connectors that might be used as input is the one named 5V available at the first pin of all four connector The rest of the power signals are outputs and it would be incorrect to try to power the board from there To keep the form factor as small as possible the GPIO and AM CON LCD connectors have 0 05 step IMPORTANT the connectors are very fragile if you attempt to disconnect the board by pulling only one side out it might break Furthermore you might bend the board s pins Use pliers or other suitable object to disconnect the connectors carefully OLIMEX sells additional and replacement male and female 0 05 50 mil step connectors Below you would find tables with the signal at each pin To understand better what each processor pin does it might be a good idea to refer to the datasheet of the AM3352 processor The schematic of
26. mmended for the board at the moment of writing might be found in the table below Display name Size of Native Official Debian Link to product page display resolution image support in inches in pixels LCD OlinuXino 4 3TS 4 3 480x272 Yes Product page LCD OLinuXino 7 7 800x480 Yes Product page LCD OLinuXino 10 10 1 1024x600 Yes Product page The default Debian image lacks a graphics environment This is one of the reasons for the lack of touchscreen support Touchscreen displays are recommended only for experienced embedded Linux users 3 9 Software support At the moment we provide ready to use Debian Linux images suitable for the micro SD card of the board We also provide instructions and sources of these releases These images might be downloaded for free and modified as the user wishes The latest images and updates are featured at the wiki article of the device https www olimex com wiki AM3352 SOM We usually try to provide extra details and best experiences with our products at our wordpress page http olimex wordpress com Another useful place is the Olimex forums where a lot of people share their experience and advice https www olimex com forum The official images are a constant work in progress newer releases are packed with better hardware support newer kernels and extra features You are more than welcome to send or share your suggestions and ideas at our e mail the public forums o
27. mode To set sleep mode entering time where X is a time in minute 0 never echo e N033 9 X gt dev tty1 from serial console Or echo e N033 9 X from framebuffer console or to set it at each boot use etc inittab ttyl sysinit echo e 33 9 X Page 35 of 36 OLIMEXO 2015 AM3352 SOM user s manual 8 7 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 ca
28. or the first time Please consider 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 3 1 Electrostatic and electrical polarity warnings AM3352 SOM boards are 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 Ensure that your development board gets attached to properly working hardware If this is not possible please use isolators like USB ISO to save your development board from potential over voltage If you connect other electrical devices to the SOM board make sure that they have equal electrical polarity For example when you connect a serial cable connected between a PC and the board s DEBUG port it is a good idea to have them both connected to the same electrical source to the same utility power socket In rare cases different polarity might cause hardware damage to the board Page 10 of 36 OLIMEXO 2015 AM3352 SOM user s manual 3 2 Requirements In order to set up the AM3352 SOM board optimally one or more additional items may be needed These might be generally placed in two categories Required items that are needed in order to achie
29. per the AM3352 is documented much better Another important point is that we consider the A13 boards mature many of the issues had already been resolved and the performance is stable For simpler command line tasks A13 SOM might be the most suitable choice 1 5 Board versions used in the manual The documents follows the hardware layout of AM3352 SOM board revision C AM3352 SOM EVB revision D peripheral board was used while writing this document Different board revisions might have different features or settings It is possible that parts of this document do not apply to all board revisions 1 6 Document organization Each section in this document covers a separate topic organized as follows Chapter 1 is an overview of the board usage and features Chapter 2 contains the general board diagram and layout Chapter 3 provides a guide for quickly setting up the board and software notes Chapter 4 describes the component that is the heart of the board the Texas Instruments AM3352 processor Chapter 5 is an explanation of the control circuitry associated with the processor Chapter 6 covers the connector pinout peripherals and jumper description Chapter 7 provides the schematics and the dimensions of the board Chapter 8 contains the revision history useful links and support information Page 7 of 36 OLIMEXO 2015 AM3352 SOM user s manual CHAPTER 2 BOARD DESCRIPTION 2 Introduction to the chapter Here you
30. r 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 AM3352 SOM AND AM3352 SOM EVB THEY ARE CONSIDERED SUITABLE ONLY FOR AM3352 SOM AND AM335
31. r irc channel We would attempt to help in almost every case We listen to the feedback and if the majority of users suggest a software change or update we try to implement such Customer feedback is very important for the overall state of the software support However do not expect full Linux software support We can share our experience We can give you full details for things we have tried We can point you to a resource or a guide We can give you general directions to solving a specific problem or places to look for more information However we won t install a piece of software for you or write custom program for you We won t provide a specific software solution to a specific software problem Page 17 of 36 OLIMEXO 2015 AM3352 SOM user s manual CHAPTER 4 THE AM3352 PROCESSOR 4 Introduction to the chapter In this chapter is located the information about the heart of AM3352 its main processor The information is a modified version of the datasheet provided by its manufacturers Texas Instruments 4 1 The processor The main feature of the AM3352 is the quality manufacturing the computing power and the very goo documentation The software support for the features in the processor is at pretty good state thanks to the efforts of the BeagleBone community the most popular board with AM335x processors and Texas Instruments themselves The exact processor that we use is AM3352ZCZD72 When browsing the documentation of the pro
32. ract with the board 1 a monitor via the DE 15 VGA connector 2 SSH with a remote computer via one of the Ethernet connectors LAN1 or LAN 3 a compatible display via the LCD connector Refer to the AM3352 SOM EV P s datasheet for more information on each connection Note that not all interface options are available for all images Using VGA LCD or LAN might require additional configurations Furthermore it is possible to corrupt the output settings over those interfaces and thus lose the output In such cases you can always use the serial cable USB SERIAL CABLE F as a reliable way to establish connection to the board Page 14 of 36 OLIMEXO 2015 AM3352 SOM user s manual 3 6 Expanding the Debian file system space The provided official Debian images have constant size but you may want to use a bigger microSD card In case you don t know how to expand the file system space you can use the built in shell script for this task This way you can take advantage of the whole volume of your microSD card Log in as a super user sudo su Type the password olimex Then type resize sd sh dev mmcblk0O 1 After that you need to reboot the board with reboot You can find the name given to the microSD card and its partitions using fdisk l 3 7 Changing the default image resolution To ease the process of changing the video output settings in the default Linux image we have provided a shell script that can be executed Using
33. rcuit marked as NA in the schematic 6 8 Additional hardware components The components below are mounted on the AM3352 SOM but are not discussed above They are listed here for completeness RST button reset used to reset the board NMI button non masked interrupt unused PWR LED RED power identification LED LED1 GREEN user programmable LED 512MB 4Gb 256 M x 16 bit DDR3 SDRAM the exact memory used in the board revision mentioned is SAMSUNG K4B4G1646D BCK0 The DDR3 memory part name in the schematic might be outdated We have used a number of different but fully compatible DDR3 memories due to supply unavailability It is always recommended to check the exact memory name printed on the component itself There are pads provided for NAND flash memory The exact memory we had in mind while designing the board might be seen in the latest schematic You would need to place all Page 29 of 36 OLIMEXO 2015 AM3352 SOM user s manual components missing from the circuit not only the memory You would also need to close the NAND E SMT jumper Note that we haven t performed any software tests with the NAND memory Page 30 of 36 OLIMEXO 2015 AM3352 SOM user s manual CHAPTER 7 SCHEMATICS 7 Introduction to the chapter In this chapter is located information about the schematics describing logically and physically AM3352 SOM 7 1 Eagle schematic AM3352 schematics may be found in the OLIMEX s GitHub reposi
34. s The web pages you can visit for more information about AM3352 SOM are https www olimex com Products SOM AM3352 AM3352 SOM Wiki article of the board https www olimex com wiki AM3352 SOM A place for general questions FAQ or friendly talk https www olimex com forum You can get the latest hardware updates at the GitHub page https github com OLIMEX SOM tree master AM3352 You may may join our IRC channel olimex freenode net http webchat freenode net channels olimex AM3352 SOM EVB s web page is here https www olimex com Products SOM AM3352 AM3352 SOM EV B The user s manual of AM3352 SOM EVB might be found here Page 32 of 36 OLIMEXO 2015 AM3352 SOM user s manual 8 4 How to purchase You can purchase directly from our online shop or from any of our distributors Note that usually it might be faster and cheaper to purchase Olimex products from our distributors List of confirmed Olimex LTD distributors and resellers https www olimex com Distributors Please visit https www olimex com for more info 8 5 Order codes Short summary of the formal product names of the devices mentioned in this document AM3352 SOM the target of this manual AM3352 SOM EVB open hardware reference design on 2 layer PCB that expands A3352 5OM with 4xUSB hosts USB OTG CAN driver VGA 2x UEXT JTAG LCD 2x100MB Ethernet USB SERIAL CABLE F USB serial console cable female AM3352 DEBIAN SD a tested class 10 m
35. s lack a serial port nowadays Even if you have serial port you should respect the CMOS levels of the board which are incompatible with the TTL levels of your computer We distribute a ready to use plug and play cable it is called USB SERIAL CABLE F Even if you already have such a cable or you decide to purchase it elsewhere it is advisable to check this product page for a reference https www olimex com Products Components Cables USB Serial Cable USB Serial Cable F You need to connect the cable to the UARTO pins as follows RX line to TX pin TX line to RX pin GND to GND Make sure that the serial cable is connected to your personal computer and recognized properly after driver installation After the hardware connection is established open a terminal program on the serial COM port which the cable is associated with The typical baud rate is 115200 the rest of the settings should be left as per default After everything else is set you would need to power the board as explained in 3 3 Powering the board The default username password combination of the official images is olimex olimex In order to save time you might want to log as super user initially The reason is that most commands require super user privileges To log as super user execute sudo su and write the password If AM3352 SOM is attached to AM3352 SOM EVB in addition to the serial communication you might also use one or more of the following mediums to inte
36. s manual 6 5 2 AM CON GPIO2 General Purpose Input Output 40pin connector AM CON GPIO2 connector Pin Si Processor ball Pintt Signal name Processor ball UT V T18 R17 R18 10 USB VBUS P15 12 N17 14 N18 16 MMC SDCD EMU4 C15 PWRONRSTN 1 SYS RESETN 10 PO 28 ETXDO K17 PO 21 ETXD1 K16 PO 17 ETXD2 K1 PO 16 ETXD3 J18 J16 K18 J15 H16 H17 USB1 ID USB1 CE USB1 DRV USBO ID USBO CE USB DRV PMIC POWER EN EXT WAKEUP NNMI P2 21 ERXDO P2 20 ERXD1 P2 19 ERXD2 P2 18 ERXD3 P3 4 ERXDV P3 10 ERXCK PO 1 EMDC PO 0 EMDIO M1 7 P _29 EPHY RST RFCLK 11 13 15 17 19 21 N 7 UT eio 2 2 ojo UJ Pin fsignal name Gp Ls fuss 7 jsp s jer Fxrjsseveus 5 usso as usse 37 jwce soce ema Lis jowsm fe aa sys Rese 25 fee asenor Las joie 27 po areno Las eden Fx ees Lx pa s erxce Gs ps zenen a7 ps oco 3s eim Page 26 of 36 OLIMEXO 2015 AM3352 SOM user s manual 6 5 3 AM CON GPIOS3 General Purpose Input Output 40pin connector AM CON GPIO3 connector Pin Signal nam Processor ball Signal name Processor ball 1 5V GND PO 15 UART1 TXD PO 13 I2C2 SCL PO 3 SPIO De MISO PO 2 SPIO SCLK P1 9 UARTA TXD P3 6 I2C0 SCL P3 15 SPI1 D MISO P3 14 SPI1 CLK P3 18 LED1 P3 20 LED2 P3 7 EMUO PO 7 PWMO OUT PO 14 UART1 RXD PO 12 I2C2 SDA
37. ssssssssscsssess 21 6 1 Communication with AM3352 SOM in Linux eee eee eee eese eee eee e eese enses es aooo 21 62 VARTO he de iioii eiii aoc creed a Food adu d aye oso ER RU OR ECCO SE RiRUD 21 6 3 MicroSD card conlieCtOr iiiiiuicce ciaceecesssscssocbaeseco b secesptbuec ess besos sb sep ese SU s Pa e pd eae e aoa p VEL o Ea ela 22 Page 3 of 36 OLIMEXO 2015 AM3352 SOM user s manual 6 31 SD MMC sot icon o eas pia ia icta tasa c o eaoaai a ev eoe ase vt eaa eras train soul Cox seca ea cessa Seo EE Sra ra Oase 23 bo GPIO COCCI icis cdd ida ibd aln kin ada kac M b divio Den idc ts ib Rad 24 6 5 1 AM CON GPIO1 General Purpose Input Output 40pin connector eee eee eeees 25 6 5 2 AM CON GPIO 2 General Purpose Input Output 40pin connector esee eeeeeeees 26 6 5 3 AM CON GPIO3 General Purpose Input Output 40pin connector eee eere 27 CHAPTER 7 SCHEMATICS RR ER 7 Introduction to the Chapter ccccccccccsssssssssssssssssscscscssscscscscscscscscscssssscssssssssssssssssssssscessoes 31 CHAPTER 8 REVISION HISTORY AND SUPPORT ee eee 32 8 Introduction to the chapter s sssvsvsvnvvvnvnnnvnvnnnnnvnnnnnnnnnnnnnnnnnnnvnnnnnnnnnnnvnnnvnnnvnnnnnnnnnnnvnnnnnnnnneeeeeen 32 8 1 Docinent Fevistoll ee ieseo oco aaa aa Etcu occa aa cu eb ose co cocta ie Ea e E ecu Eo Eia SI Fi a E
38. the board of peripherals AM3352 SOM EVB might also help you identify the main function of the pins You can also find the pinout of the GPIO and LCD connectors in a stand alone document at the following link https www olimex com Products SOM AM3352 AM3352 SOM resources AM3352 SOM GPIOs pdf Page 24 of 36 OLIMEXO 2015 AM3352 SOM user s manual 6 5 1 AM CON GPIO1 General Purpose Input Output 40pin connector AM CON GPIO1 connector Processor ball Pin Signal name Processor ball 2 me ser 34 nD0s vo 8 3 3V PO 26 LCD D21 P1 15 LCD D16 m rmi Bis alu kw s dris mos P2 15 LCD ps m omma jv po 22 1CD D23 m J amomo ooo p 14 LCD DI un adsvsmesen juo po S LCD D12 ms 9erencus us po 10 LCD D14 vir pram mr P2 2A 1CD CIK mes J apo smernem jur c vis amemo us Ta ks 3spras emewma mos ua Tov vis aper me 11 13 15 1 1 21 23 M P2 9 LCD D3 N ola Processor ball ME Beo E 0 E Ve 2 Ww Pintlsignal name 3pv see 26 LCD pA 7115 00 016 9P27 LDD1 11P2 9 LCD D3 1350 23 LCD D22 18P2 11 LCD DS A72 13 00 D7 192 15 LCD D9 2150 22 LCDD23 231 14 LCD D17 250 B LCD D12 27e 10 LCD Did 292 23 LCD HSYNC 31P2 24 LCD CLK 33NC 0 353 19 LCD PMR EN 37 semvi Page 25 of 36 OLIMEXO 2015 AM3352 SOM user
39. tory https github com OLIMEX SOM tree master AM3352 You can download the whole repository as zip without having a GitHub account The part of the design that has the main microcontroller is considered proprietary design and design files would not be shared If you are looking for a schematic of an older revision of the board and it isn t available at our web site you may request it by the support e mail 7 2 General physical dimensions Note that all dimensions are in mils 1095 98mil 1025mil 1025mil 714 02mil e sped C Q LO si 225mil 1025mil 1125mil 2400mil Page 31 of 36 OLIMEXO 2015 AM3352 SOM user s manual CHAPTER 8 REVISION HISTORY AND SUPPORT 8 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 8 1 Document revision Document revision changes fnodified page A 03 06 15 Initial manual release 06 11 Fixed incorrect information about USB 26 VBUS being connected to processor ball B 18 09 15 R15 should be processor ball P15 Improved the picture with the board s 31 dimensions 8 2 Board revision Remember to check the schematics and the board design files to compare the differences G mitial release of the board 8 3 Useful web link
40. ve minimum functionality Recommended items that is good to have in order to be able to interact with the most important of the features of the board Note that if AM3352 SOM is mounted on AM3352 SOM E VB the requirements would be different The requirements below are for a stand alone use of AM3352 SOM Refer to AM3352 SOM EV B s user s manual for adjusted requirements Required items 5V external power supply with proper connectors AM3352 SOM has no power jack neither battery connector neither USB port power has to be provided to the suitable pins 45V GND Output device USB SERIAL CABLE F personal computer with serial terminal program AM3352 SOM lacks other options for debugging you would need a serial cable suitable for the 3 3V UART signals SD card with compatible image official images are available at the wiki article for the board Recommended items AM3352 SOM EV B reference design of a 2 layer board for AM3352 SOM that adds video and display output and connectors 2x100MB Ethernet with connectors CAN driver with connector USB OTG JTAG connector 4xUSB HS FS LS hosts The AM3352 SOM EVB board also adapts the 0 05 step GPIO headers of the AM3352 to 0 1 step headers so you can easily access the available signals It has an open source hardware design and the design files are available as Eagle CAD files This eases the process of creating custom shields with custom peripherals Some of the abov
41. x that have been tested please refer to chapter 3 2 Requirements Of course if you already have a large enough microSD card you can download the official Linux image from the wiki pages https www olimex com wiki AM3352 SOM 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 Page 22 of 36 OLIMEXO 2015 AM3352 SOM user s manual 6 3 1 SD MMC slot The schematic related to the SD MMC microSD connector is shown below SD MMC slot is a microSD card slot connector located on the bottom of the board uu CAP a a Ar SSS E 3 34 R42 NAAM oO MicroSD MMC _DAT3 SD MMC MMC CMD 2 R45 MMC _CMD C124 22uF 7 6 3U Bee 10k UE C128 22uF7S 5 s MES CERO CLK SCLK RM13G62 MMC DAT MMC DATO EE RM1363 MMC _DAT1 MMC DATA re RM1361 MMCO_DAT2 MMCO DAT2 ie Lg AULA Rar206 4X0603 4B8 100K g DRT2 RES CL47 nH 895 4 7 6R 25 mA 3 811364 MMC SDCDH EMU4 R46 ar 1 MICRO SD MMC TFC WPAPR 8 18k This slot is typically used for booting the OS due to the larger capacities of the microSD cards compared to SD or MMC cards It is suggested to have an SD card with a proper Linux It is recommended to use class 10 10MByte sec card for faster read write operations since lower class cards especially higher capac
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