Installing and Replacing Desktop Board Components
Connecting to the Front Panel Audio Header
Figure 9, A shows the location of the front panel audio header. The front panel audio header can be used for both Intel HD Audio and AC ‘97 Audio.
Table 5 shows the pin assignments for the Intel HD Audio and Table 6 shows the pin assignments for AC ‘97 Audio.
Table 5. Front Panel Audio Header for Intel HD Audio
Pin | Signal Name | |
|
|
|
1 | [Port 1] | Left channel |
|
|
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3 | [Port 1] | Right channel |
|
|
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5 | [Port 2] | Right channel |
|
| |
7 | SENSE_SEND (Jack detection) | |
|
|
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9 | [Port 2] | Left channel |
|
|
|
Pin | Signal Name |
|
|
2 | Ground |
4PRESENCE# (Dongle present)
6[Port 1] SENSE_RETURN
8Key (no pin)
10[Port 2] SENSE_RETURN
Table 6. Front Panel Audio Header for AC ‘97 Audio
Pin | Signal Name |
|
|
1 | MIC |
|
|
3 | MIC_BIAS |
|
|
5 | FP_OUT_R |
7AUD_5V
9FP_OUT_L
Pin | Signal Name |
|
|
2 | AUD_GND |
|
|
4 | AUD_GND |
6FP_RETURN_R
8KEY (no pin)
10FP_RETURN_L
Connecting to the Serial Port Header
Before connecting to the serial port header, observe the precautions in "Before You Begin" on page 23. See Figure 9, B on page 30 for the location of the serial port header.
Table 7 shows the pin assignments for the serial port header.
Table 7. Serial Port Header (COM 1)
Pin Signal Name
1DCD (Data Carrier Detect)
3TXD# (Transmit Data)
5 | Ground |
7RTS (Request To Send)
9RI (Ring Indicator)
Pin | Signal Name |
|
|
2 | RXD# (Receive Data) |
4DTR (Data Terminal Ready)
6DSR (Data Set Ready)
8CTS (Clear To Send)
10Key (no pin)
31
