External crystal on WROOM 32E

[MeriJo]

Hi,

I’ve recently switched from ESP32-WROOM-32 to WROOM-32E and I’m using an external crystal oscillator but it doesn’t start up. I’m using ESP IDF v5.1.
I can see the startup sequence on the oscilloscope but it then just trails off without starting the oscillations.
The same crystal on the old WROOM 32 works without an issue.

Is there a different configuration that I need to get the oscillator to work on the 32E?

Kind regards,
Meri

[MeriJo]

I figured it out.
Soldered a 10MΩ load resistor shunted over the inputs and outputs of the crystal oscillator. This is the resistor marked as “no component” in the datasheet.

Hope it helps someone else!