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Embedded Intel® Atom™ Processor N2800 with Intel® NM10 Express Chipset Development Kit User's Manual
3.2.3.1
Table 15. Front Panel Audio Header for Intel HD Audio
Pin
Signal Name
1
PORT_1L
2
GND
3
PORT_1R
4
PRESENCE#
5
PORT_2R
6
SENSE1_RETURN
7
SENSE_SEND
8
KEY
9
PORT_2L
10
SENSE2_RETURN
Table 16. Front Panel Audio Header for AC'97 Audio
Pin
Signal Name
1
MIC
2
AUD_GND
3
MIC_BIAS
4
PRESENCE#
5
FP_OUT_R
6
AUD_GND
7
RESERVED
8
KEY
9
FP_OUT_L
10
AUD_GND
Signal Tables for the Connectors and Headers
Description
Analog Port 1 – Left channel (Microphone)
Ground
Analog Port 1 – Right channel (Microphone)
Active low signal that signals BIOS that an Intel HD Audio
dongle is connected to the analog header. PRESENCE#=0
when an Intel HD Audio dongle is connected
Analog Port 2 – Right channel (Headphone)
Jack detection return for front panel (JACK1)
Jack detection sense line from the Intel HD Audio CODEC
jack detection resistor network
No pin
Analog Port 2 – Left channel (Headphone)
Jack detection return for front panel (JACK2)
Description
Front panel microphone input signal (biased when
supporting stereo microphone)
Ground used by analog audio circuits
Microphone power / additional MIC input for stereo
microphone support
Active low signal that signals BIOS that an Intel HD Audio
dongle is connected to the analog header. PRESENCE#=0
when an Intel HD Audio dongle is connected
Right channel audio signal to front panel (headphone drive
capable)
Ground used by analog audio circuits
Reserved
No pin
Left channel audio signal to front panel (headphone drive
capable)
Ground used by analog audio circuits
57
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