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ECM-3711 Series
30 ECM-3711 Series User’s Manual
2.4.3 Audio connector (JAUDIO1)
Signal PIN PIN Signal
GND 12 11 SPDIF OUT
NC 10 9 NC
Mic Bias 8 7 Mic-in
LIN_R 6 5 LIN_L
GND 4 3 GND
LINEOUT _R 2 1 LINEOUT_L
2.4.3.1 Signal Description – Audio Connecter (JAUDIO1)
Signal Signal Description
LINEOUT L/R
Left and right speaker output. These are the speaker outputs directly from the
speaker amplifier.
Mic-in
The MIC signal is used for microphone input. This input is fed to the left
microphone channel.
Line-In L/R Left and right line in signals.
LN L/R
Left and right line out signals. Both signals are capacitor coupled and should have
GND as return.
SPDIF OUT PCM Non-Audio Sony/Philips Digital I/F Output (Internal pulled high).
Mic Bias
Mic Bias provides 3.3V supplied through 3.2K with capacitive decoupling to
GND. This signal may be used for bias of some microphone types.