57 Chapter 5
Front USB
Front Audio (AC’97)
# Pin Definition Description
1 VREG_FP_USBPWR0 Front panel USB power (ports 0 & 1)
2 VREG_FP_USBPWR0 Front panel USB power (ports 0 & 1)
3 USB_FP_P0- Front panel USB port 0 negative signal
4 USB_FP_P1- Front panel USB port 1 negative signal
5 USB_FP_P0+ Front panel USB port 0 positive signal
6 USB_FP_P1+ Front panel USB port 1 positive signal
7 GND Ground
8 GND Ground
9Key Key
10 USB_FP_OC0 Front panel USB over current signal (port 0
& 1)
# Pin Definition Description
1 AUD_MIC Front panel microphone input signal
2 AUD_GND Ground used by analog audio circuits
3 AUD_MIC_BIAS Microphone power
4 AUD_VCC Filtered +5V used by analog audio circuits
5 AUD_FPOUT_R Right channel audio signal to front panel
6 AUD_RET_R Right channel audio signal return from
front panel
7 HP_ON RSVD for future use to control headphone
amplifier
8Key No pin
9 AUD_FPOUT_L Left channel audio signal to front panel
10 AUD_RET_L Left channel audio signal return from
front panel
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