Rozdíl mezi zapojením HD Audio a AC97 na front panel

The front panel audio header on an Intel® Desktop Board lets you connect to a front panel audio module built into a system chassis. See the header pinout configuration below for connecting a chassis with Intel® High Definition Audio (Intel® HD Audio) or AC’97 (Audio Codec ’97) audio.

Note HD Audio headers are pin-compatible with AC’97 chassis and connectors.

 

Intel® HD Audio header

For HD audio front panel modules

Pin Signal Description Pin Signal Description
1 PORT 1L Analog Port 1—left channel (Microphone) 2 GND Ground
3 PORT 1R Analog Port 1—right channel (Microphone) 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 PORT 2R Analog Port 2—right channel (Headphone) 6 SENSE1_RETURN Jack detection return for front panel (JACK1)
7 SENSE_SEND Jack detection sense line from the Intel® HD Audio CODEC jack detection resistor network 8 KEY No pin
9 PORT 2L Analog Port 2—left channel (Headphone) 10 SENSE2_RETURN Jack detection return for front panel (JACK2)

 

For AC97 front panel modules

Pin Signal Description Pin Signal Description
1 MIC Front panel microphone input signal (biased when supporting stereo microphone) 2 AUD_GND Ground used by analog
3 MIC_BIAS Microphone power /
extra MIC input for stereo microphone support
4 AUD_GND Ground used by analog audio circuits
5 FP_OUT_R Right channel audio signal to front panel (headphone drive capable) 6 FP_RETURN_R Right channel audio signal return from front panel (when headphones unplugged)
7 AUD_5V Filtered +5V used by analog audio circuits 8 KEY No pin
9 FP_OUT_L Left channel audio signal to front panel (headphone drive capable) 10 FP_RETURN_L Left channel audio signal return from front panel (when headphones unplugged)

 

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