MSI MS-9801 User Manual page 25

MS-9801 Mainboard
Audio Amplifier Connector: JAMP1
The 5W JAMP1 is used to connect audio amplifiers to enhance audio performance.
1
Front Panel Audio Connector: JAUD1
The JAUD1 front panel audio connector allows you to connect the front panel audio
and is compliant with Intel
PIN SIGNAL
1 AUD_MIC
2 AUD_GND
3 AUD_MIC_BIAS
4 AUD_VCC
5 AUD_FPOUT_R
6 AUD_RET_R
7 HP_ON
8 KEY
9 AUD_FPOUT_L
10 AUD_RET_L
Important
If you don't want to connect to the front audio header, pins 5 &
6, 9 & 10 have to be jumpered in order to have signal output
directed to the rear audio ports. Otherwise, the Line-Out
connector on the back panel will not function.
2-10
JAMP1
® Front Panel I/O Connectivity Design Guide.
JAUD1
9
10
JAUD1 Pin Definition
DESCRIPTION
Front panel microphone input signal
Ground used by analog audio circuits
Microphone power
Filtered +5V used by analog audio circuits
Right channel audio signal to front panel
Right channel audio signal return from front panel
Reserved for future use to control headphone amplifier
No pin
Left channel audio signal to front panel
Left channel audio signal return from front panel
Pin Definition
PIN SIGNAL
1 AMP_L-
2 AMP_L+
3 AMP_R-
4 AMP_R+
1
2
5
9
10
6