6.15 Miscellaneous (J14)
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Connector J14 provides access to common miscellaneous signals used in a PC application.
Signal
Definition
Speaker
The signal on this pin is referenced to +5V Out. Connect a speaker between this pin and +5V Out.
IDE Drive LED
Referenced to +5V Out. Does not require a series resistor. Connect LED directly between this pin and +5V Out.
Power LED
Referenced to +5V Out. Does not require a series resistor. Connect LED directly between this pin and +5V Out.
Reset-
Connection between this pin and Ground will generate a Reset condition.
LCD Backlight Ctrl
User provided brightness control for the LCD backlight; 0V = max, 5V = min. This signal has a pull-down resistor to ensure maximum brightness when it is not connected externally.
Reserved
Not connected, reserved for future use.
Connector type: Standard 2mm dual row straight pin header with gold flash plating