PORZ substitute signal for AM335x

Don Welch

Prodigy 40 points

Other Parts Discussed in Thread: TPS65910, TPS65910A

Is there an alternate signal from the am335x CPU that can be monitored that would coincide with "PORZ" to logic "1"

Is there any special timing to consider for powering up the CPU with the TPS65910 PMU?

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Hi Don,

You can check Figure 8-19 in the AM335X TRM Rev. K. nRESETIN_OUT goes high after a determined time, and CLKOUT1 (if SYSBOOT5 = 1) starts outputting the main oscillator frequency with approx. 1 clock cycle delay.

About the TPS65910A PMIC, there are no special considerations required. It's designed to provide all the necessary timings. See http://www.ti.com/lit/ug/swcu093c/swcu093c.pdf

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PORZ substitute signal for AM335x