CCOMe-965
CCOMe-965 - Rev. First Edition: 1.0 - Last Edition: 3.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
54
3.3.23
Switch / LED header interface
To allow the integration of a SECOpITX-GX based system inside a box PC-like, there is a
connector on the carrier board that allows to remote signals for the Power Button (to be used
to put the system in a Soft Off State, or awake from it), for the Reset Button, and the signal for
optional LED signalling activity on SATA Channel and Power On states.
The pinout of this connector complies with Intel
®
Front Panel I/O connectivity Design Guide,
Switch/LED Front Panel section, chapter 2.2. It is shown in the table on the left.
Connector CN34 is an internal 9-pin standard male pin header, p 2.54 mm,
5+4 pin, h= 6mm, type NELTRON p/n 2213S-10G-E10 or equivalent.
Signals Description:
HD_LED_P: Hard Disk Activity LED signal
’
s pull-up to +5V_S voltage (510
Ω
pull-up).
HD_LED_N: Hard Disk Activity LED output signal.
RST_SW_N: Reset Switch GND.
RST_SW_P: Reset switch input signal. This signal has to be connected to an external momentary pushbutton (contacts normally open). When the pushbutton is
pressed, the pulse of Reset signal will cause the reset of the board.
PWR_SW_P: Power switch input signal, open drain. This signal has to be connected to an external momentary pushbutton (contacts normally open). Upon the
pressure of this pushbutton, the pulse of this signal will let the switched voltage rails turn on or off.
PWR_SW_N: Power Switch GND.
FP PWR_P/SLP_N: Power/Sleep messaging LED terminal 1 with 510
Ω
pull-up resistor to +5V_A voltage. Connect it to an extremity of a dual-colour power LED for
power ON/OF, sleep and message waiting signalling. Please refer to Intel
®
Front Panel I/O connectivity Design Guide, chapter 2.2.4, for LED functionalities and
signal meaning.
FP PWR_N/SLP_P: Power/Sleep messaging LED terminal 2 with 510
Ω
pull-up resistor to +5V_A voltage. Connect it to the
other extremity of the dual-colour power
LED above mentioned.
Please be aware that the power switch input signal and the reset switch input signal are also managed directly on the carrier board by the two pushbuttons M12
and M11 (respectively), so it is not mandatory to connect them externally using CN34.
As already written in the previous paragraph dedicated to Audio interface, it is also possible to buy SECO
’
s dedicated front panel module, which offers two
standard audio jacks, two pushbuttons (for reset and power on) and two LEDs, for SATA activity and Power status signalling. Please also check chapter 4.2.1 for
further details.
Switch / LED Header Interface - CN34
Pin Signal
Pin Signal
1
HD_LED_P
2
FP PWR_P/SLP_N
3
HD_LED_N
4
FP PWR_N/SLP_P
5
RST_SW_N
6
PWR_SW_P
7
RST_SW_P
8
PWR_SW_N
9
+5V_S
