Installing and Replacing Desktop Board Components
47
HD Audio Link Header
See Figure 22, A for the location of the HD Audio Link header. Table 6 shows the pin
assignments for the header.
Table 6. HD Audio Link Header Signal Names
Pin Signal Name Pin Signal Name
1 BCLK 2 Ground
3 RST# 4 DVDD_IO
5 SYNC 6 Ground
7 SDO 8 3.3V_DVDD_CORE
9 SDI0 10 +12 V
11 SDI1 12 Key
13 No Connection 14 3.3V_DUAL
15 No Connection 16 Ground
Front Panel Audio Header
The front panel audio header supports both High Definition (HD) Audio and AC’97
Audio. Table 7 shows the pin assignments and signal names for HD A
udio and Table 8
shows the pin assignments and signal names for AC’97 Audio.
Table 7. Front Panel Audio Header Signal Names for HD Audio
Pin Signal Name Pin Signal Name
1 PORT 1L 2 GND
3 PORT 1R 4 PRESENCE#
5 PORT 2R 6 SENSE1_RETURN
7 SENSE_SEND 8 KEY (no pin)
9 PORT 2L 10 SENSE2_RETURN
Table 8. Front Panel Audio Header Signal Names 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
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