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Front USB
Front Audio (AC'97)
57
#
Pin Definition
1
VREG_FP_USBPWR0
2
VREG_FP_USBPWR0
3
USB_FP_P0-
4
USB_FP_P1-
5
USB_FP_P0+
6
USB_FP_P1+
7
GND
8
GND
9
Key
10
USB_FP_OC0
#
Pin Definition
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
Description
Front panel USB power (ports 0 & 1)
Front panel USB power (ports 0 & 1)
Front panel USB port 0 negative signal
Front panel USB port 1 negative signal
Front panel USB port 0 positive signal
Front panel USB port 1 positive signal
Ground
Ground
Key
Front panel USB over current signal (port 0
& 1)
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
RSVD for future use to control headphone
amplifier
No pin
Left channel audio signal to front panel
Left channel audio signal return from
front panel
Chapter 5
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