Intel DH55TC Product Guide - Page 47

Front Panel Audio Header, Internal Mono Speaker Header

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Installing and Replacing Desktop Board Components Front Panel Audio Header The front panel audio header shown in Figure 23, A supports both Intel High Definition (HD) Audio and AC '97 Audio. Table 4 shows the pin assignments and signal names for HD Audio and Table 5 shows the pin assignments and signal names for AC '97 Audio. Table 4. Front Panel Audio Signal Names for Intel HD Audio Pin Signal Name 1 PORT 1L (Microphone) 3 PORT 1R (Microphone) Pin Signal Name 2 GND 4 PRESENCE# 5 PORT 2R (Headphone) 6 SENSE1_RETURN 7 SENSE_SEND 9 PORT 2L (Headphone) 8 KEY (no pin) 10 SENSE2_RETURN Table 5. Front Panel Audio Header Signal Names for AC '97 Audio Pin Signal Name 1 MIC 3 MIC_BIAS 5 FP_OUT_R 7 AUD_5V 9 FP_OUT_L Pin Signal Name 2 AUD_GND 4 AUD_GND 6 FP_RETURN_R 8 KEY (no pin) 10 FP_RETURN_L Internal Mono Speaker Header The internal mono speaker header is shown in Figure 23, B. Table 6 shows the pin assignments and signal names for the internal mono speaker header. Table 6. Internal Mono Speaker Header Pin Signal Name 1 − 2 + 47

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Installing and Replacing Desktop Board Components
47
Front Panel Audio Header
The front panel audio header shown in Figure 23, A supports both Intel High Definition
(HD) Audio and AC ’97 Audio.
Table 4 shows the pin assignments and signal names for HD Audio and Table 5 shows
the pin assignments and signal names for AC ’97 Audio.
Table 4. 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 5.
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
Internal Mono Speaker Header
The internal mono speaker header is shown in Figure 23, B.
Table 6 shows the pin
assignments and signal names for the internal mono speaker header.
Table 6. Internal Mono Speaker Header
Pin
Signal Name
1
−
2
+