pinagem intel hd audio e ac'97
TRANSCRIPT
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Desktop BoardsFront panel audio header pinouts The front panel audio header on an Intel Desktop Board lets you connect to a front panel audio module built into a system chassis. This document describes the header pin-out configuration for connecting a chassis with Intel High Definition Audio (HD Audio) or AC'97 audio.
Note
HD Audio headers are pin-compatible with AC'97 chassis and connectors.
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For HD Audio front panel modules
Pin Signal
Description
Pin Signal
Description
1
PORT 1L
Analog Port 1 - left 2 channel (Microphone)
GND
Ground
3
PORT 1R
Analog Port 1 - right 4 channel (Microphone)
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
PORT 2R
Analog Port 2 - right channel (Headphone)
6
Jack detection SENSE1_RETURN return for front panel (JACK1)
7
Jack detection sense line from the Intel HD SENSE_SEND Audio CODEC jack detection resistor network Analog Port 2 - left channel (Headphone)
8
KEY
No pin
9
PORT 2L
10
Jack detection SENSE2_RETURN return for front panel (JACK2)
For AC97 front panel modules
Pin Signal
Description Front panel microphone input signal (biased when supporting stereo microphone) Microphone power / additional MIC input for stereo microphone support
Pin Signal
Description
1
MIC
2
AUD_GND
Ground used by analog
3
MIC_BIAS
4
AUD_GND
Ground used by analog audio circuits
5
Right channel audio signal to FP_OUT_R front panel (headphone drive capable) Filtered +5 V used by analog audio circuits Left channel audio signal to front panel (headphone drive capable)
6
Right channel audio signal return from FP_RETURN_R front panel (when headphones unplugged) KEY No pin Left channel audio signal return from front panel (when headphones unplugged)
7
AUD_5V
8
9
FP_OUT_L
10
FP_RETURN_L