Texas Instruments AM335x Sitara User Manual

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 www.ti.com
6.2.2.5 OSC1 Not Used
Figure 6-17 shows the recommended oscillator connections when OSC1 of the ZCE package is not used
and Figure 6-18 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 Copyright © 2011–2015, Texas Instruments Incorporated
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Texas Instruments AM335x Sitara Specifications

General

Brand	Texas Instruments
Model	AM335x Sitara
Category	Processor
Language	English