Chapter 3
Hardware
CoreModule 730
Reference Manual
23
Utility Interface
The Utility interface provides three utility and I/O signals on the module and consists of a 5-pin, 0.100"
(2.54mm), single row header. The US15W SCH drives the signals on the Utility interface.
Table 3-9
provides the signal definitions.
•
Power Button
•
Reset Switch
•
Speaker
Power Button
The Utility header provides a signal for an external Power button through pins 1 and 2. The Power button
allows the user to turn Off the system.
Reset Switch
Pins 2 and 3 on the Utility header provide the signal for an external reset button which allows the user to re-
boot the system.
BIOS Recovery (Using Reset Switch)
In the event you have selected BIOS settings that prevent you from booting the system, you can stop the
current BIOS settings in the CMOS from being loaded by pressing and holding the Reset button for five
seconds and then releasing the button. The system re-boots, and the BIOS loads the default settings.
Speaker
The speaker signal provides sufficient signal strength to drive a 1W 8
Ω
“Beep” speaker through the Utility
interface at an audible level. The speaker signal is driven from an on-board amplifier and the SCH.
Note:
The shaded area denotes power or ground. The signals marked with * indicate active low.
Miscellaneous
Battery
An external battery connection is provided through the J17 header to support a backup battery for the CMOS
RAM and the RTC (Real Time Clock).
Real Time Clock (RTC)
The CoreModule 730 contains a Real Time Clock (RTC). The CMOS RAM can be backed up with a lithium
battery. If the battery is not present, a battery-free boot option in the BIOS completes the boot process and
resets the clock to the default date and time.
Table 3-9. Utility Interface Pin Signals (J25)
Pin #
Signal
Description
1
/PWR_BTN
External Power Button (Pins 1-2)
2
GND
Ground
3
/RESET SW*
External Reset Switch signal (Pins 2-3)
4
5V
+5 Volts Power
5
SPKR_CONN
Speaker Output (Pins 4-5)
NOTE
Some operating systems require a valid default date and time to function.
Содержание CoreModule 730
Страница 1: ...CoreModuleTM 730 Stackable Single Board Computer Reference Manual P N 50 1Z019 1000 ...
Страница 18: ...Chapter 2 Product Overview 14 Reference Manual CoreModule 730 ...
Страница 32: ...Chapter 4 BIOS Setup 28 Reference Manual CoreModule 730 ...
Страница 34: ...Appendix A Technical Support 30 Reference Manual CoreModule 730 ...