Intel D946GZIS Product Guide - Page 43

Connecting to the Alternate Front Panel Power LED Header, Connecting to the HD Audio Link Header

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Installing and Replacing Desktop Board Components Connecting to the Alternate Front Panel Power LED Header Figure 20, C on page 40 shows the location of the alternate front panel power LED header. Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel header. If your chassis has a three-pin power LED cable, connect it to this header. Table 8 shows the pin assignments for the front panel header. Table 8. Alternate Front Panel Power LED Header Pin Description 1 Front panel green LED 2 No pin 3 Front panel yellow LED In/Out Out Out Connecting to the HD Audio Link Header See Figure 20, A for the location of the HD Audio Link header. Table 9 shows the pin assignments for the header. Table 9. HD Audio Link Header Signal Names Pin Signal Name 1 BLCK 3 RST Pin Signal Name 2 Ground 4 3.3V/1.5V I/O 5 SYNC 6 Ground 7 SDO 9 SDI 11 No connection 8 3.3V_CORE 10 +12V 12 Key (no pin) 13 No connection 14 3.3V/1.5V STBY 15 No connection 16 Ground 43

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Installing and Replacing Desktop Board Components
43
Connecting to the Alternate Front Panel Power LED
Header
Figure 20, C on page 40 shows the location of the alternate front panel power LED
header.
Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front
panel header.
If your chassis has a three-pin power LED cable, connect it to this
header.
Table 8 shows the pin assignments for the front panel header.
Table 8. Alternate Front Panel Power LED Header
Pin
Description
In/Out
1
Front panel green LED
Out
2
No pin
3
Front panel yellow LED
Out
Connecting to the HD Audio Link Header
See Figure 20, A for the location of the HD Audio Link header.
Table 9 shows the pin
assignments for the header.
Table 9. HD Audio Link Header Signal Names
Pin
Signal Name
Pin Signal Name
1
BLCK
2
Ground
3
RST
4
3.3V/1.5V I/O
5
SYNC
6
Ground
7
SDO
8
3.3V_CORE
9
SDI
10
+12V
11
No connection
12
Key (no pin)
13
No connection
14
3.3V/1.5V STBY
15
No connection
16
Ground