Technical Reference
43
Table 16. Front Panel Audio Header for Intel
®
HD Audio
Pin
Signal Name
Pin
Signal Name
1
[Port 1] Left channel
2
Ground
3
[Port 1] Right channel
4
PRESENCE# (Dongle present)
5
[Port 2] Right channel
6
[Port 1] SENSE_RETURN
7
SENSE_SEND (Jack detection)
8
Key (no pin)
9
[Port 2] Left channel
10
[Port 2] SENSE_RETURN
Table 17. Front Panel Audio Header for AC ’97 Audio
Pin Signal
Name
Pin Signal
Name
1
MIC
2
AUD_GND
3 MIC_BIAS
4 AUD_GND
5 FP_OUT_R
6 FP_RETURN_R
7 AUD_5V
8 KEY
(no
pin)
9 FP_OUT_L
10
FP_RETURN_L
2.2.2.2
Add-in Card Connectors
The board has the following add-in card connectors:
•
PCI Conventional (rev 2.3 compliant) bus: one PCI Conventional bus add-in card
connector.
Note the following considerations for the PCI Conventional bus connector:
•
The PCI Conventional bus connector is bus master capable.
•
SMBus signals are routed to the PCI Conventional bus connector. This enables PCI
Conventional bus add-in boards with SMBus support to access sensor data on the
board. The specific SMBus signals are as follows:
⎯
The SMBus clock line is connected to pin A40.
⎯
The SMBus data line is connected to pin A41.
2.2.2.3
Auxiliary Front Panel Power/Sleep LED Header
Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel
header.
Table 18. Auxiliary Front Panel Power/Sleep LED Header
Pin Signal
Name
In/Out
Description
1
HDR_BLNK_GRN
Out
Front panel green LED
2 Not
connected
3
HDR_BLNK_YEL
Out
Front panel yellow LED