MEN BL70S, Руководство пользователя

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Functional Description
20BL70S00 E3

2018-06-11 Page 46
3.5 Status LEDs
Table 10. Status LEDs at front panel
The user LEDs are software-configurable via SMBus.
3.6 Real-Time Clock (RTC)
The BL70S 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 up to 72 hours when fully charged.
3.6.1 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.
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.
Label Color Function
1 Yellow Power LED

On: Power supply active
2 Yellow CPU Board status LED

See Chapter 3.4.3.1 CPU Board Status LED on page 45
3 Yellow User LED A

Off: Default state
4 Yellow User LED B

Off: Default state
5 Yellow User LED C
Off: Default state
6 Yellow User LED D

Off: Default state
See Table 55, SMB Register (
0x40) on page 66
.

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 2.7.4 Managing RTC Time Adjustments on page 33 for Windows.
 See Chapter 2.8.4 Managing RTC Time Adjustments on page 38 for Linux.