AM335x RTC_KALDO_ENn threshold level

takeshi matsuzaki

Expert 2030 points

Hello,

What is the threshold level(VIH,VIL) of AM335x.RTC_KALDO_ENn ?

RTC_KALDO_ENn is in VDDS_RTC power domain and it is Analog I/O Cell, not CMOS,
so VIH,VIL are not described in data sheet.
but my customer wants to know them, please help.

Regards,
Takeshi Matsuzaki

over 11 years ago

0 Biser Gatchev-XID over 11 years ago

TI__Guru**** 393215 points

Hi Matsuzaki-san,

As you correctly mention this is an analog input, so there are no VIH and VIL levels defined for it. The purpose of this input is to enable the internal RTC LDO. To enable the LDO this pin must be tied to GND. To disable the LDO this pin must be tied to VDDS_RTC. You can find details of the RTC configurations here: http://processors.wiki.ti.com/index.php/AM335x_Schematic_Checklist#RTC

0 takeshi matsuzaki over 11 years ago in reply to Biser Gatchev-XID

Expert 2030 points

Hi Biser-san,
Thank you for quick reply every time.

OK, I will say to accept no VIH,VIL on RTC_KALDO_ENn to my customer.

Regards,
Takeshi Matsuzaki

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AM335x RTC_KALDO_ENn threshold level