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iMX7 SPI/DMA during system idle mode

Question asked by Jens Graf on Jan 29, 2018
Latest reply on Jan 29, 2018 by Yuri Muhin

Hello,

we are planning a project with the iMX DUAL. Low energy consumption is very important in some device states.

Therefore the following question:

Is it possible to transfer via SPI received data (rate 500kHz) via DMA to one of the internal RAMs (TCM or OCRAM) during System Idle mode or even during Low Power Idle mode ?

 

According datasheet:

System Idle mode power consumption is around 30mW

Low Power Idle mode is around 3mW

 

user manual:

10.1.4.3 Low Power Modes
The ECSPI does not operate under low power mode.

 

Thanks in advance

 

Jens

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