TDA4VH-Q1: WKUP_LP_CLKIN function

Hi,

Please elaborate on the question. Do you want to use 32K clock for some peripheral?

- Keerthy

I see in TDA4VH EVM, use an RTC provide frequency to this pin as input signal. My question is this frequency will be used to which internal module of TDA4VH? 

BTW, if PMIC TPS6594133A external OSC 32K crystal in its side, we can use TPS6594133A GPIO to provide this frequency to TDA4VH By WKUP_LP_CLKIN pin, so that can reduce a RTC component?

Typically the CLKIN will be an option to clock timers.

WKUP_LP_CLKIN is an LVCMOS pin, so it should be OK to clock from an external component, including the PMIC if the voltage levels are compatible.

Kevin

If we don't want to use this pin, just left it is ok? Thus will have any impact for internal module features?