Power Rails Meanings - Seco Smarc CSM-B79 User Manual

2.3.4 Power Rails meanings

In all the tables contained in this manual, Power rails are named with the following meaning:
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VDD_IN: SMARC module power input voltage. Derived directly from VIN coming from Power IN Connector CN3. VDD_IN value can be set by
Power In Voltage selector CN8 (par.2.3.3)
VDD_RTC: Low current RTC circuit backup power. 3V coin cell voltage coming from the RTC Coin Cell Battery holder CN2 for supplying the RTC clock on SMARC
module.
_RUN: Switched voltages, i.e. power rails that are active only when the board is in ACPI s S0 (Working) state. Examples:+3.3V_RUN, +5V_RUN.
_ALW: Always-on voltages, i.e. power rails that are active both in ACPI s S0 (Working), S3 (Standby) and S5 (Soft Off) state. Examples: +5V_ALW, +3.3V_ALW.
_DSW: Deep Sleep Well voltages, i.e. power rails that are derived directly from VIN coming from Power IN Connector CN3. Examples: +3.3V_DSW, +1.8V_DSW.
CSM-B79
CSM-B79 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: A.R - Reviewed by S.R. - Copyright © 2021 SECO S.p.A.
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