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QUADMO747-E6xx
Page 29
User Manual - Rev. First Edition: 1.0 - Last Edition: 1.2- Author: S.B. - Reviewed by G.M.
4.5.7 External RTC Synchro
Quadmo747-E6xx module has two different RTCs: the first one is integrated into the Intel® Atom
E6xx CPU, while the second is programmed inside the embedded microcontroller.
Various O.S. can see just one RTC, so if this option is disabled, then date/time change made in the
O.S. will result only in update of internal RTC.
When this option is enabled, then every 8 seconds an SMI will provide to synchronize the external
RTC to the internal one.
By entering the setup the synchronisation will be made every 64 ms, independently of the status of
this option.
Using an OS with ACPI, independently of the status of this option, each time the system enters S3,
S4 or S5 status, then intenral and external RTC will be synchronised.
4.5.8 SmbAlert S3 Wake
When enabled, the system will wake from Suspend to Ram (S3) state also with the assertion of the
SMB_ALERT# signal.
Copyright © 2012 SECO s.r.l.
QUADMO747-E6xx
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