I am developing product using STM32H7A3 series MCU.
In my product we configure CEC peripheral on the MCU in order to use it.
I follow the steps mention in RM.
I conduct a CEC compliance test, and some error detected on CEC_ISR register.
My I know, what can cause the bit TXERR to become 1(meaning transmission error)?
----explanation in RM------
Bit 11 TXERR: Tx-error
In transmission mode, TXERR is set by hardware if the CEC initiator detects low impedance on the CEC line while it is released. TXERR aborts message transmission and clears TXSOM and TXEOM controls.
TXERR is cleared by software write at 1
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It mentions "low impedance detected" but what can cause the low impedance detected?
