Front Panel Audio Header; Chassis Intrusion Header; Front Panel Audio Signal Names For Intel Hd Audio; Front Panel Audio Header Signal Names For Ac '97 Audio - Intel BLKDH67BL Product Manual

Front Panel Audio Header

The front panel audio header shown in Figure 20, A supports both Intel High Definition
(HD) Audio and AC '97 Audio.
Table 5 shows the pin assignments and signal names for HD Audio and Table 6 shows
the pin assignments and signal names for AC '97 Audio.
Table 5. Front Panel Audio Signal Names for Intel HD Audio
Pin Signal Name
1 PORT 1L (Microphone)
3 PORT 1R (Microphone)
5 PORT 2R (Headphone)
7 SENSE_SEND
9 PORT 2L (Headphone)
Table 6. Front Panel Audio Header Signal Names for AC '97 Audio
Pin Signal Name
1 MIC
3 MIC_BIAS
5 FP_OUT_R
7 No connect
9 FP_OUT_L

Chassis Intrusion Header

Figure 20, B shows the location of the chassis intrusion header. This header can be
connected to a mechanical switch on the chassis to detect if the chassis cover is
removed. This switch should be in the open position when the chassis cover is
installed and closed when the cover is removed.
Table 7 shows the pin assignments and signal names for the chassis intrusion header.
Table 7. Chassis Intrusion Header Signal Names
Pin Description
1 Ground
2 Intruder#
Installing and Replacing Desktop Board Components
Pin Signal Name
2 GND
4 PRESENCE#
6 SENSE1_RETURN
8 KEY (no pin)
10 SENSE2_RETURN
Pin Signal Name
2 AUD_GND
4 PRESENCE#
6 AUD_GND
8 KEY (no pin)
10 AUD_GND
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