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3.3.5 MFG + Audio + Power/Reset buttons connector
MFG + Audio + Power/Reset buttons connector - J11
Pin
Signal
Pin
1
MSP_TEST
2
MSP_RST
3
GND
4
Mic_In
5
Audio_GND
6
Line_Out_Left
Moreover, in the same connector are also carried the signals for managing external Power and Reset Button, to be used to turn On / Off and reset the board.
SECO can provide for an adapter cable with two audio jacks and two pushbuttons already connected. Please check par. 4.2.5.
Pinout of this connector is shown in the table above.
Here following the signals' description:
Mic_In: Audio Microphone Channel.
Line_Out_Left: Audio Line Out Left Channel.
Line_Out_Right: Audio Line Out Right Channel.
PWR_BTN#: Power Button Input, active low +3.3V_A electrical voltage signal, with 10kΩ pull-up resistor. When working in ATX mode, this signal can be
connected to a momentary push-button: a pulse to GND of this signal will switch power supply On or Off.
RST_BTN#: Reset Button Input, active low +3.3V_S electrical voltage signal, with 10kΩ pull-up resistor. This signal can be connected to a momentary push-
button: a pulse to GND of this signal will reset the SBC-984 board.
Finally, this same connector carries out two signals (MSP_TEST and MSP_RST) that are used for manufacturing purposes, and shall therefore not be used by the
customer.
SBC-984
SBC-984 User Manual - Rev. First Edition: 1.0 - Last Edition: 4.0 - Author: S.B. - Reviewed by N.P. Copyright © 2016 SECO S.r.l.
Signal
7
Audio_GND
8
Line_Out_Right
9
GND
10
PWR_BTN#
11
RST_BTN#
12
+3.3V_S
In order to reduce the space dedicated to connectors, SBC-984 board doesn't offer any
standard audio jack.
However, SBC-984 integrates an AC'97 Audio Codec (Realtek ALC655
for commercial version, stariing from PCB revision C, and Wolfson
WM9707 for industrial version), which makes basic audio connection
available on dedicated connector J4, which is a 9-pin single line SMT
connector, type MOLEX 53398-1271 or equivalent.
Mating connector: MOLEX 51021-1200 receptacle with MOLEX 50079-8000 female crimp
terminals.
Using this dedicated connector, it will be possible to connect any audio jack to remote audio
connectors in the preferred position.
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