About RDave.2

RDave.2 · 2023-04-27

Hello,We are using STM32F765BI series MCU. We are using SD Card using the SDIO interface. It seems that when the SDIO module is Active (CLK signal is generated at 24MHz), higher emissions are observed in the spectrum. When we disable the SDIO module ...

RDave.2 · 2023-05-30

we have to use SD clock at 24MHz

RDave.2 · 2023-05-18

We are using RF-explorer with 15mm H probe, (Near field antenna) for inhouse testing. (in closed environment)and also we had observed same reflections in EMI lab, with +/- some amplitude we are using ST MCU in multiple products, and every product hav...

RDave.2 · 2023-05-18

Emissions are around 15dbuV in the 0.1 to 30 MHz band

RDave.2 · 2023-04-27

Hello DTomi.1OK will check the data and revert. We are currently measuring as per CISPR32 Standards.30MHz to 1GHz.We have checked the setup by enabling and disabling the SDIO peripheral. By disabling the SDIO peripherals emissions are drastically red...

RDave.2 · 2023-04-27

Hello AScha.3,We have placed termination resistors near MCU for all signals - Clock, Command and Data pins according to calculations and also rectified the values as per the impedance calculations.Also have tune the signals to eliminate the overshoot...

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Why SDIO Clock Signal is generating higher radiated emissions?

Re: Why SDIO Clock Signal is generating higher radiated emissions?

Re: Why SDIO Clock Signal is generating higher radiated emissions?

Re: Why SDIO Clock Signal is generating higher radiated emissions?

Re: Why SDIO Clock Signal is generating higher radiated emissions?

Re: Why SDIO Clock Signal is generating higher radiated emissions?