Bureaucrats, dave_user, Administrators
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<section begin="History" />
{| style="border-collapse:collapse; "
!colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History
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!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Issue Date
!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Notes
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|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|X.Y.Z{{oldid|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"12271|Month Year2020/12/31}}|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|TBDFirst release
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| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |{{oldid|17042|2022/09/07}}
| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |Added power consumption measures
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<section end="History" /><section begin="Body" /> ''TBD: riportare i valori delle tabelle corretti''
== Operational characteristics ==
=== Maximum ratings ===
{| class="wikitable"
! latexfontsize="scriptsize"| Parameter! latexfontsize="scriptsize"| Min! latexfontsize="scriptsize"| Typ! latexfontsize="scriptsize"| Max! latexfontsize="scriptsize"| Unit
|-
|Main power supply voltage
|-0.35|3.35|3.6
|V
|}
=== Recommended ratings ===
{| class="wikitable"
! latexfontsize="scriptsize"| Parameter! latexfontsize="scriptsize"| Min! latexfontsize="scriptsize"| Typ! latexfontsize="scriptsize"| Max! latexfontsize="scriptsize"| Unit
|-
|Main power supply voltage
|3.1355|3.35|35.46525
|V
|}
=== Output Rails ===
The ETRA SOM generates internally some power rails that can be used to power the carrier board peripherals.
==== VDD ====
Voltage for CPU I/O. It has a typical value of 3.3V. This rail powers the CPU I/O and internal memories.
The maximum ouput current is 500mA from which has to be subtracted the CPU and memories consumptions.
==== PMIC_3V3 ====
Spare buck converter output. It has a typical value of 3.3V.
The maximum output current is 2A.
==== BST_OUT ====
Boost converter output. It has a typical value of 5V. From this rail derives the VBUS_OTG_OUT and VBUS_SW rails.
Thge maximum output current is 1.1A from wich has to be subtracted the VBUS_OTG_OUT and VBUS_SW consumptions
==== VBUS_OTG_OUT ====
USB power output switch from PMIC, intended to power the OTG port when configured in HOST mode.
The power switch has an overcurrent protection that switch off this rail over 550mA drain current.
==== VBUS_SW ====
USB power output switch from PMIC, intended to power the HOST port.
The power switch has a programmable overcurrent protection that switch off this rail over 600mA (default) or 1.1A drain current.
==== LDO2 ====
Spare LDO converter output. It can be programmed to source from 1.7V to 3.3V. The default value is 1.8V
The maximum output current is 350mA.
==== LDO5 ====
Spare LDO converter output. It can be programmed to source from 1.7V to 3.9V. The default value is 2.9V
The maximum output current is 350mA.
==== 1V8 ====
Spare LDO converter output. It can be programmed to source from 0.8V to 3.3V. The default value is 1.8V
The maximum output current is 150mA.
=== Power consumption ===
Measurements have been performed on the ETRA SOM under test is equipped with:
The table below reports the power consumption measurements for the considered use cases.
{| class="wikitable"
! latexfontsize="scriptsize"| Checkpoint! latexfontsize="scriptsize"| Power (mW)
|-
|U-boot promptSOM under reset| xxxx375
|-
|Linux prompt
| xxxx975|-|Standby (*)|200
|-
|Stress App test Suspend to RAM (**)| xxxx50
|-
|}
(*) Stressful Application Testwakeup from GPIO (**) wakeup from RTC or GPIO ===== Wakeup =====For RTC wakeup it is possible to use this simple commands: https://github.com/stressapptest <code>wakeuptime=`date -d "1 minute" +%s`</stressapptestcode>
<code>rtcwake -lt$wakeuptime</code>
----
[[Category:ETRA]]