Chapter 13: Audio and PC beep speaker
Description
The audio is implemented with an AC 97 Codec. It provides stereo line in and
stereo line out. These functions are on connector J9. Both inputs and outputs are
unamplified signals, so the speakers must have a separate power source and
volume control.
The PC beep speaker is implemented with the Geode CS5536 Southbridge, and is
accessed at connector W2. Table 13–1 shows the audio connector, and table 13–2.
shows the PC speaker connector.
Table 13–1 J9 – audio connector
J9, audio connector
Pin #
Pin Name
Pin Name
Pin #
1 Lineout_L
Linein_R
2
3
Audio Ground
Audio Ground
4
5
Audio Ground
Audio Ground
6
7 Lineout_R
Linein_L
8
Table 13–2 W2 – PC speaker connector
W2, PC speaker connector
Pin #
Pin Name
1 Ground
2 PC_Beep
3 +5V
Note
See
Appendix A - Connectors
for mating information.
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