Peripheral Interfaces - CompuLab UCM-iMX93 Reference Manual

PERIPHERAL INTERFACES

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UCM-iMX93 implements a variety of peripheral interfaces through two 100-pin (0.4mm pitch)
carrier board connectors. The following notes apply to interfaces available through the carrier-
board connectors:

Some interfaces/signals are available only with/without certain configuration options of
the UCM-iMX93 SoM. The availability restrictions of each signal are described in the
"Signals description" table for each interface.

Some of the UCM-iMX93 carrier board interface pins are multifunctional. Up to 8
functions (ALT modes) are accessible through each multifunctional pin. For additional
details, please refer to chapter 5.6.

UCM-iMX93 uses different I/O voltage domains to power different groups of digital
signals. Some pin operate at 3.3V, some at 1.8V. Voltage domain of each signal is
specified in the "Signals description" table for each interface.
The signals for each interface are described in the "Signal description" table for the interface in
question. The following notes provide information on the "Signal description" tables:

"Signal name" – The name of each signal with regards to the discussed interface. The
signal name corresponds to the relevant function in cases where the carrier board pin in
question is multifunctional.

"Pin#" – Pin number on the carrier board interface connector

"Type" – Signal type, see the definition of different signal types below

"Description" – Signal description with regards to the interface in question

"Voltage Domain" – Voltage level of the particular signal

"Availability" – Depending on UCM-iMX93 configuration options, certain carrier board
interface pins are physically disconnected (floating). The "Availability" column
summarizes configuration requirements for each signal. All the listed requirements must
be met (logical AND) for a signal to be "available" unless noted otherwise.
Each described signal can be one of the following types. Signal type is noted in the "Signal
description" tables. Multifunctional pin direction, pull resistor, and open drain functionality is
software controlled. The "Type" column header for multifunctional pins refers to the
recommended pin configuration with regards to the discussed signal.

"AI" – Analog Input

"AO" – Analog Output

"AIO" – Analog Input/Output

"AP" – Analog Power Output

"I" – Digital Input

"O" – Digital Output

"IO" – Digital Input/Output

"P" – Power

"PD" - Always pulled down onboard UCM-iMX93, followed by pull value.

"PU" - Always pulled up onboard UCM-iMX93, followed by pull value.

"LVDS" - Low-voltage differential signaling.
Revised May 2023 UCM-iMX93 Reference Guide
Peripheral Interfaces
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