https://www.mediawiki.compulab.com/w/index.php?action=history&feed=atom&title=UCM-iMX91%3A_Evaluation_Kit%3A_Hardware_GuideUCM-iMX91: Evaluation Kit: Hardware Guide - Revision history2026-04-15T03:42:26ZRevision history for this page on the wikiMediaWiki 1.31.0https://www.mediawiki.compulab.com/w/index.php?title=UCM-iMX91:_Evaluation_Kit:_Hardware_Guide&diff=5686&oldid=prevIgor: Created page with "=Overview= ==Terms and Definitions== *'''SoM''' – System-on-Module.<br> *'''SBC''' – Single Board Computer.<br> *'''UCM-iMX91L''' – System-on-module product based on th..."2025-11-25T11:28:37Z<p>Created page with "=Overview= ==Terms and Definitions== *'''SoM''' – System-on-Module.<br> *'''SBC''' – Single Board Computer.<br> *'''UCM-iMX91L''' – System-on-module product based on th..."</p>
<p><b>New page</b></p><div>=Overview= <br />
==Terms and Definitions==<br />
*'''SoM''' – System-on-Module.<br><br />
*'''SBC''' – Single Board Computer.<br><br />
*'''UCM-iMX91L''' – System-on-module product based on the NXP i.MX91 SoC. More information [https://www.compulab.com/products/computer-on-modules/ucm-imx91l-nxp-i-mx-91-som-system-on-module/ here].<br><br />
*'''SBEV-UCMIMX93''' – A carrier board, designed for evaluation and development with UCM-iMX91L and UCM-iMX93.<br><br />
*'''UCM-iMX91L Evaluation kit''' – A combination of UCM-iMX91L SoM and SBEV-UCMIMX93 carrier-board accompanied by a set of accessories. More information [https://www.compulab.com/products/computer-on-modules/ucm-imx91l-nxp-i-mx-91-som-system-on-module/#evalkit here].<br><br />
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==Additional resources==<br />
*All additional materials for UCM-iMX91L and SBEV-UCMIMX93 are available [https://www.compulab.com/products/computer-on-modules/ucm-imx91l-nxp-i-mx-91-som-system-on-module/#devres here].<br><br />
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=Block Diagram=<br />
[[Image:SBEV-UCMIMX93 block diagram.png|frameless|top|850px|link=]]<br />
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=Connector Locations=<br />
[[Image:Sbev-ucmimx93_connector-locations.png|frameless|top|1200px|link=]]<br />
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=Interfaces and Functions=<br />
==DC Power==<br />
Main power should be supplied using 12V DC power supply included in the evaluation kit. Adapters for European AC and US AC outlets are included. Connect the power supply to DC input jack '''J1'''.<br><br />
ON/OFF switch '''SW1''' switches main DC power. To turn on the system, switch '''SW1''' to ON position.<br />
<br />
==Serial Console==<br />
To begin using serial console connect your host PC to the micro-USB connector '''P3''' using the USB cable from the evaluation kit.<br><br />
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==Serial Download Programming (SDP) port==<br />
USB SDP interface is available on micro-USB connector '''P21''' located on the bottom side of the board under USB connector '''J3'''.</br><br />
The SDP interface can be used for device recovery and firmware programming using the NXP UUU utility.</br><br />
UCM-iMX91L can be forced into Serial Download Mode by shorting jumper '''E4'''.<br />
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==Audio==<br />
SBEV-UCMIMX93 features on-board Wolfson WM8962 audio codec.<br><br />
Analog audio line output is routed to audio jack '''J6'''.<br><br />
Analog audio line input is routed to audio jack '''J5'''.<br><br />
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==USB==<br />
SBEV-UCMIMX93 features two USB2.0 ports that are derived from the i.MX93 USB sub-system:<br><br />
* Connectors '''J2''' and '''J3''' – USB type-A connectors<br />
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==SD card==<br />
SBEV-UCMIMX93 supports SD card storage through micro-SD socket '''P4'''.</br><br />
Pressing and holding the ALT-BOOT button '''SW2''' during power-up or hardware reset forces UCM-iMX91L to boot firmware from the SD card.<br />
<br />
==mini-PCIe socket==<br />
SBEV-UCMIMX93 provides mini-PCI socket '''P8''' that can be used for evaluation of USB-based modules such as 4G cellular modem.</br><br />
<u>NOTE</u>: '''P8''' socket does NOT provide PCI Express signals.<br />
<br />
==SIM card socket==<br />
uSIM card socket '''P7''' is connected to mini-PCIe socket '''P8'''.</br><br />
An active SIM card should be installed into '''P7''' for operating a cellular modem in mini-PCIe socket '''P8'''.<br />
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==Ethernet==<br />
SBEV-UCMIMX93 provides two Gigabit Ethernet port via RJ45 connectors '''P5''' and '''P6'''.<br />
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==CAN bus==<br />
CAN bus interface is available via header '''P17'''.<br><br />
CAN bus on-board termination can be enabled by shorting jumper '''E6'''.<br><br />
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==UART==<br />
Two UART interfaces are available on headers '''P19''' and '''P20'''.<br />
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==I2C==<br />
I2C interface is available via header '''P3'''.<br><br />
Please refer to UCM-iMX91L reference guide and SBEV-UCMIMX93 schematics for details.<br><br />
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==SPI==<br />
SPI interface is available via header '''P15'''.<br><br />
Please refer to UCM-iMX91L reference guide and SBEV-UCMIMX93 schematics for details.<br><br />
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==GPIO==<br />
GPIO signals are available via header '''P18'''.<br><br />
Please refer to UCM-iMX91L reference guide and SBEV-UCMIMX93 schematics for details.<br><br />
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==ADC==<br />
ADC signals are available via header '''P9'''.<br><br />
Please refer to UCM-iMX91L reference guide and SBEV-UCMIMX93 schematics for details.<br><br />
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==Reset==<br />
Pressing the reset button '''SW3''' triggers system hardware reset.<br><br />
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==Boot Sequence Selection==<br />
Pressing and holding the ALT BOOT button '''SW2''' during power-up or hardware reset forces UCM-iMX91L to boot firmware from an SD card in socket '''P4'''.<br><br />
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==RTC==<br />
RTC is implemented on UCM-iMX91L and receives power from coin-cell battery '''BH1'''.<br><br />
Jumper '''E5''' must be shorted for correct RTC operation.<br><br />
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==JTAG==<br />
JTAG interface is available via header '''P11'''.<br><br />
Please refer to UCM-iMX91L reference guide and SBEV-UCMIMX93 schematics for details.<br><br />
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==LEDs==<br />
<br />
*'''DS1''' - Indicates connection of USB host to console port.<br><br />
*'''DS2''' - Indicates presence of 12V power on the DC input jack.<br><br />
*'''DS3''' - Indicates V_SOM power rail is enabled.<br><br />
*'''DS4''', '''DS5''' - user LEDs. Controlled by UCM-iMX91L GPIOs.<br><br />
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==Jumpers Summary==<br />
<br />
*'''E1''' - USB2 multiplexing between mini-PCIe socket '''P8''' and USB connector '''J2'''.<br><br />
*'''E2''' - V_SOM power rail current measurement.<br> <br />
*'''E3''' - force UCM-iMX91L to perform firmware boot from SD card.<br><br />
*'''E4''' - force UCM-iMX91L to enter serial download mode (SDP).<br> <br />
*'''E5''' - RTC battery power.<br><br />
*'''E6''' - CAN bus termination control.<br> <br />
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'''Default state:'''<br><br />
*Jumper '''E5''' is populated<br><br />
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[[Category:UCM-iMX91L]]</div>Igor