Where is it written that GPIO22 and GPIO19 are UART terminals?

[moonyong]

Thank you for helping.

I have a question about ESP32-WROVER-E.

I read the AT command manual to test the AT command

GPIO22: TX
GPIO19: RX

It was written that, and I was able to confirm the operation by connecting it like that.

However, the Datasheet does not say that GPIO22,19 is a UART terminal.

How can I confirm that it is a UART terminal?

Thank you.

[WiFive]

Gpio matrix allows most digital functions like uart to be mapped to (almost) any pin

[moonyong]

Thank you for your reply.

I will check the document.