Ieee 1394A Header; Connecting To The Audio System; Back Panel Audio Connectors; Ieee 1394A Header Signal Names - Intel BLKDP55WB Product Manual

IEEE 1394a Header

Figure 22, G shows the location of the IEEE 1394a header. Table 12 shows the pin
assignments and signal names for the IEEE 1394a header.
Table 12. IEEE 1394a Header Signal Names
Pin Signal Name
1 TPA1+
3 Ground
5 TPA2+
7 +12 V
9 Key (no pin)

Connecting to the Audio System

After installing the Realtek audio driver from the Intel
the multi-channel audio feature can be enabled. Figure 23 shows the back panel audio
connectors. The default connector assignments are shown in the table.
NOTE
The back panel line out connector is designed to power either headphones or amplified
speakers only. Poor audio quality may occur if passive (non-amplified) speakers are
connected to this output.
Installing and Replacing Desktop Board Components
Item Description
A Line in
B Front speaker/headphones
C Mic in
Figure 23. Back Panel Audio Connectors
Pin Signal Name
2 TPA1-
4 Ground
6 TPA2-
8 +12 V
10 Ground
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Express Installer DVD-ROM,
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