Audio Interfaces - Seco SBC Series User Manual

3.3.7

Audio interfaces

In the SBC-A80-eNUC board, audio functionalities are provided by a Realtek ALC283 High Definition Audio Codec.
TRRS Audio jack- CN25
Pin Signal
TIP Headphone Out Left Channel
RING1 Headphone Out Right Channel
RING2 GND
SLEEVE MIC_IN
Speaker Connector- CN30
Pin Signal
1 Speaker Right Channel +
2 Speaker Right Channel -
3 Speaker Left Channel -
4 Speaker Left Channel +
SBC-A80-eNUC
SBC-A80-eNUC User Manual - Rev. First Edition: 1.0 - Last Edition: 1.2 - Author: S.B. - Reviewed by G.G Copyright © 2017 SECO S.r.l.
In order to reduce the space dedicated to connectors, there is a TRRS Combo Audio Jack, i.e. a
single jack which offer both stereo Line Out and Mic In functionalities.
Such TRRS Combo Audio jack can be used with any 4-poles 3.5mm diameter audio jack, with
pinout compatible with the most recent Headsets, shown in the table on the left.
Additionally, it is also possible to connect external stereo speakers by using the dedicated connector
CN30, which is a connector type JST p/n BM04B-ZESS-TB.
Mating connector: JST ZER-04V-S with SZE-002T-P0.3female crimp terminals.
SECO can provide for an adapter cable to this connector as a part of the accessory kit p/n CABKITA80 (please check
chapter 5.2.1 for further details).
Speaker audio output is internally amplified and supports 8Ω speakers only.
30