Dynex DX-MIDTWER, User Manual

Page: 7 / 34

Opening the chassis 5
AC97 connector High definition audio
No. Signal name Description
1 MIC Front panel microphone
input signal (biased when
supporting stereo
microphone)
2 AUD_GND Ground use by analog
audio circuits
3 MIC_BIAS Microphone
power/additional 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 aduio signal
return from front panel
(when headphones are
unplugged)
7 AUD_5V Filtered +5 V used by
analog audio circuits
8 FP_OUT_L Left channel audio signal
to front panel (headphone
drive capable)
9 FP_RETURN_L Left channel aduio signal
return from front panel
(when headphones are
unplugged)
No. Signal name 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 the BIOS that an
Intel® HD audio dongle is
connected to the analog
header. PRESENCE#=0
when an Intel HD aduio
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 PORT 2L Analog port 2/Left channel
(headphone)
9 SENSE2_RETURN Jack detection return for
front panel (JACK2)