AM335x
(ZCZ Package)
RTC_XTALIN
RTC_XTALOUT
N/C
VSS_RTC
N/C
AM335x
(ZCE Package)
RTC_XTALIN
RTC_XTALOUT
N/C
N/C
AM3359, AM3358, AM3357, AM3356, AM3354, AM3352
SPRS717H – OCTOBER 2011 – REVISED MAY 2015
6.2.2.5
OSC1 Not Used
shows the recommended oscillator connections when OSC1 of the ZCE package is not used
and
shows the recommended oscillator connections when OSC1 of the ZCZ package is not
used. An internal 10 k
Ω
pull-up on the RTC_XTALIN terminal is turned on when OSC1 is disabled to
prevent this input from floating to an invalid logic level which may increase leakage current through the
oscillator input buffer. OSC1 is disabled by default after power is applied. Therefore, both RTC_XTALIN
and RTC_XTALOUT terminals should be a no connect (NC) when OSC1 is not used.
Figure 6-17. OSC1 (ZCE Package) Not Used Schematic
Figure 6-18. OSC1 (ZCZ Package) Not Used Schematic
114
Power and Clocking
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