Installing and Replacing Desktop Board Components
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) |
|
|
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3 | PORT 1R | (Microphone) |
|
|
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5 | PORT 2R | (Headphone) |
|
| |
7 | SENSE_SEND | |
|
|
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9 | PORT 2L | (Headphone) |
|
|
|
Pin | Signal Name |
|
|
2 | GND |
|
|
4 | PRESENCE# |
6SENSE1_RETURN
8KEY (no pin)
10SENSE2_RETURN
Table 6. Front Panel Audio Header Signal Names for AC ’97 Audio
Pin | Signal Name |
|
|
1 | MIC |
|
|
3 | MIC_BIAS |
5FP_OUT_R
7No connect
9FP_OUT_L
Pin | Signal Name |
|
|
2 | AUD_GND |
|
|
4 | PRESENCE# |
6AUD_GND
8KEY (no pin)
10AUD_GND
IEEE 1394a Header
See Figure 20, B for the location of the IEEE 1394a header. Table 7 shows the pin assignments for the header.
Table 7. IEEE 1394a Header Signal Names
Pin | Signal Name |
|
|
1 | TPA1+ |
|
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3 | Ground |
|
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5 | TPA2+ |
|
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7 | +12 V |
|
|
9 | Key (no pin) |
|
|
Pin | Signal Name |
|
|
2 | TPA1- |
|
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4 | Ground |
|
|
6 | TPA2- |
|
|
8+12 V
10Ground
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