Functional Description
Page 36
3.4
Reset
The G25A is equipped with a reset button which is recessed within the front panel and
requires a tool, e.g. paper clip to be pressed, preventing the button from being
inadvertently activated.
3.5
Real-Time Clock (RTC)
The G25A includes a real-time clock connected to the processor as the system RTC (ERTC)
RX-8571. The RTC has an accuracy of approximately 1.7 seconds/day (11 minutes/year)
at 25°C. The real-time clock device is connected to the CPU via SMBus.
For data retention during power off the RTC is backed up by a supercapacitor. The
supercapacitor gives an autonomy of approx. 72 hours (+/-20%) when fully charged.
Worst case derating is -30% after 1.67 years at +40°C board temperature.
For retention of time/date data after a power off of more than 8-10 hours the RTC can
optionally be backed by a battery.
3.5.1
Software Support
Please note that the real-time clock integrated in the processor is
not used
. Configuring
the date and time through the means provided by the operating system
does not set
the system RTC.
You can set the system date and time through the UEFI firmware.
If you use dedicated MEN driver software supporting the system RTC, you can use the
functions provided there to set the system RTC also via software.
3.6
Trusted Platform Module (TPM)
A trusted platform module for authenticating the hardware to ensure platform integrity
is available on the G25A. The TPM module is compliant to the TPM v2.0 specification.
ERTC (External Real-Time Clock)
is a real-time clock additionally
connected to the processor as a system RTC.
CRTC (Chipset Real-Time Clock)
is the real-time clock of the processor.
See
Chapter 2.6.2 Managing RTC Time Adjustments on page 24
information on how to configure the RTC under Windows.
See
Chapter 2.7.2 Managing RTC Time Adjustments on page 29
information on how to configure the RTC under Linux.
