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3.3.8
Switch / LED header interface
Switch / LED Header Interface - CN20
Pin
Signal
Pin
1
HD_LED_P
3
HD_LED_N
5
RST_SW_N
7
RST_SW_P
9
---
HD_LED_P: Hard Disk Activity LED signal's pull-up to +5V_RUN voltage (510Ω 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 510Ω pull-up
resistor to +5V_ALW 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 510Ω pull-up
resistor to +5V_ALW voltage. Connect it to the other extremity of the dual-colour
power LED above mentioned.
CQ7-D59
CQ7-D59 - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: S.O. - Reviewed by S.B. Copyright © 2021 SECO S.p.A.
To allow the integration of a CQ7-D59 based system inside a box PC-like, there is a connector
on the 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
Signal
signalling activity on SATA Channel and Power On states.
2
FP PWR_P/SLP_N
Connector CN20 is an internal 9-pin standard male pin header, p 2.54 mm, 5+4
4
FP PWR_N/SLP_P
pin, h= 6mm, type NELTRON p/n 2213S-10G-E10 or equivalent.
6
PWR_SW_P
The pinout of this connector complies with Intel
Switch/LED Front Panel section, chapter 2.2. It is shown in the table on the left.
8
PWR_SW_N
Here following the signals description, and also an example schematic for a possible utilisation
of them:
®
D1
CN1
1
2
HD_LED_P
551-0407F
3
4
HD_LED_N
5
6
7
8
9
2213S-10G-E10
Front Panel I/O connectivity Design Guide,
D2
1
2
PWR_P/SLP_N
551-3107F
PWR_N/SLP_P
M1
1
3
PWR_BTN#
4
2
Pushbutton SMD
M2
1
3
RST_BTN#
4
2
Pushbutton SMD
39
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