Intel Thin Mini-ITX - Audio Interfaces; Front Panel Audio Header

Thin Mini-ITX Internal Electrical Interfaces
Thin Mini-ITX Based PC System Design Guide 21
2.3 Audio
2.3.1 Front Panel Audio
Front panel audio header: 2x5, 2.54mm pitch, keyed at pin 8
Figure 2-5. Front Panel Audio Header
Table 2-5. Passive AC’97 Front Panel Audio Header Pin-Out
Pin
Signal Name
Description
1
MIC
Front panel microphone input signal (biased when supporting
stereo microphone)
2
AUD_GND
Ground used by analog audio circuits
3
MIC_BIAS
Microphone power / additional MIC input for stereo microphone
support
4
PRESENCE#
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.
5
FP_OUT_R
Right channel audio signal to front panel (headphone drive capable)
6
AUD_GND
Ground used by analog audio circuits
7
RESERVED
Reserved
8
KEY
No pin
9
FP_OUT_L
Left channel audio signal to front panel (headphone drive capable)
10
AUD_GND
Ground used by analog audio circuits
Table 2-6. HD Audio Front Panel Audio Header Pin-Out
Pin
Signal Name
Description
1
PORT 1L
Analog Port 1 - Left channel (Microphone)