Installation Instructions
K8N4/K8N4U
14
Audio Interface(F_AUDIO)(Optional)
The audio interface provides two kinds of audio output choices: the FrontAudio and the
RearAudio. Their priority level is as sequence. When the FrontAudio is available, the
RearAudio( in-case speakers ) will be cut off. An onboard amplifier is provided for the
earphone. When the FrontAudio is absent, Pin5 and Pin6, Pin9and Pin10 must be short
connected, otherwise the Rear output has no signal.
F_AUDIO
Pin No.
Symbol
Pin No.
Symbol
1
AUD_MIC
2
AUD_GND
3
AUD_MIC_BIAS
4
AUD_VCC
5
AUD_FPOUT_R
6
AUD_RET_R
7
NC
8
(Cut away)
9
AUD_FPOUT_L
10
AUD_RET_L
2
4
6
8
10
1
3
5
7
9
