Intel DG41MJ Product Guide - Page 39

Front Panel Audio Header, Chassis Intrusion Header

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Installing and Replacing Desktop Board Components Front Panel Audio Header The front panel audio header shown in Figure 18, A on page 38 supports both Intel HD Audio and AC'97 Audio. Table 5 shows the pin assignments and signal names for Intel 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) Pin Signal Name 2 GND 4 PRESENCE# 6 SENSE1_RETURN 8 KEY (no pin) 10 SENSE2_RETURN Table 6. Front Panel Audio Header Signal Names for AC'97 Audio Pin Signal Name 1 MIC 3 MIC_BIAS Pin Signal Name 2 AUD_GND 4 AUD_GND 5 FP_OUT_R 6 FP_RETURN_R 7 AUD_5V 9 FP_OUT_L 8 KEY (no pin) 10 FP_RETURN_L Chassis Intrusion Header Figure 18, B on page 38 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. Table 7 shows the pin assignments for the chassis intrusion header. Table 7. Chassis Intrusion Header Signal Names Pin Description 1 Intruder 2 Ground 39

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Installing and Replacing Desktop Board Components
39
Front Panel Audio Header
The front panel audio header shown in Figure 18, A on page 38 supports both Intel HD
Audio and AC’97 Audio.
Table 5 shows the pin assignments and signal names for Intel
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
Pin
Signal Name
1
PORT 1L (Microphone)
2
GND
3
PORT 1R (Microphone)
4
PRESENCE#
5
PORT 2R (Headphone)
6
SENSE1_RETURN
7
SENSE_SEND
8
KEY (no pin)
9
PORT 2L (Headphone)
10
SENSE2_RETURN
Table 6. 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
Chassis Intrusion Header
Figure 18, B on page 38 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.
Table 7 shows the pin assignments for the chassis intrusion header.
Table 7. Chassis Intrusion Header Signal Names
Pin
Description
1
Intruder
2
Ground