Intel DH55PJ Product Guide - Page 47

Serial Header, Connecting to the Audio System - audio drivers

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Installing and Replacing Desktop Board Components Serial Header Figure 20, H shows the location of the serial header. Table 12 shows the pin assignments and signal names for the serial header. Table 12. Serial Port Header Pin Signal Name 1 DCD (Data Carrier Detect) 3 TXD# (Transmit Data) 5 Ground 7 RTS (Request To Send) 9 RI (Ring Indicator) Pin Signal Name 2 RXD# (Receive Data) 4 DTR (Data Terminal Ready) 6 DSR (Data Set Ready) 8 CTS (Clear To Send) 10 Key (no pin) Connecting to the Audio System After installing the Realtek audio driver from the Intel® Express Installer DVD-ROM, the multi-channel audio feature can be enabled. Figure 21 shows the back panel audio connectors. The default connector assignments are shown in the table. Item Description A Line in B Line out (front speaker/headphones) C Mic in Figure 21. Back Panel Audio Connectors 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. 47

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Installing and Replacing Desktop Board Components
47
Serial Header
Figure 20, H shows the location of the serial header.
Table 12 shows the pin
assignments and signal names for the serial header.
Table 12. Serial Port Header
Pin
Signal Name
Pin
Signal Name
1
DCD (Data Carrier Detect)
2
RXD# (Receive Data)
3
TXD# (Transmit Data)
4
DTR (Data Terminal Ready)
5
Ground
6
DSR (Data Set Ready)
7
RTS (Request To Send)
8
CTS (Clear To Send)
9
RI (Ring Indicator)
10
Key (no pin)
Connecting to the Audio System
After installing the Realtek audio driver from the Intel
®
Express Installer DVD-ROM,
the multi-channel audio feature can be enabled.
Figure 21 shows the back panel audio
connectors.
The default connector assignments are shown in the table.
Item
Description
A
Line in
B
Line out (front speaker/headphones)
C
Mic in
Figure 21.
Back Panel Audio Connectors
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.