Technical Reference

Table 16. Front Panel Audio Header

Pin

Signal Name

 

 

 

1

[Port 1]

Left channel

 

 

 

3

[Port 1]

Right channel

 

 

 

5

[Port 2]

Right channel

 

 

7

SENSE_SEND (Jack detection)

 

 

 

9

[Port 2]

Left channel

 

 

 

Pin

Signal Name

 

 

2

Ground

 

 

4

PRESENCE# (Dongle present)

 

 

6

[Port 1] SENSE_RETURN

 

 

8

Key (no pin)

 

 

10

[Port 2] SENSE_RETURN

 

 

2.2.2.2Add-in Card Connectors

The board has the following add-in card connectors:

One PCI Express x16 connector supporting simultaneous transfer speeds up to

4 GBytes/sec of peak bandwidth per direction and up to 8 GBytes/sec concurrent bandwidth.

PCI Express x1: one PCI Express x1 connector. The x1 interface supports simultaneous transfer speeds up to 250 Mbytes/sec of peak bandwidth per direction and up to 500 MBytes/sec concurrent bandwidth.

PCI Conventional (rev 2.3 compliant) bus: two PCI Conventional bus add-in card connectors. The SMBus is routed to all PCI Conventional bus connectors. PCI Conventional bus add-in cards with SMBus support can access sensor data and other information residing on the board.

Note the following considerations for the PCI Conventional bus connectors:

All of the PCI Conventional bus connectors are bus master capable.

SMBus signals are routed to all PCI Conventional bus connectors. This enables PCI Conventional bus add-in boards with SMBus support to access sensor data on the board. The specific SMBus signals are as follows:

The SMBus clock line is connected to pin A40.

The SMBus data line is connected to pin A41.

2.2.2.3Auxiliary Front Panel Power/Sleep LED Header

Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel header.

Table 17. Auxiliary Front Panel Power/Sleep LED Header

Pin

Signal Name

In/Out

Description

 

 

 

 

1

HDR_BLNK_GRN

Out

Front panel green LED

 

 

 

 

2

Not connected

 

 

 

 

 

 

3

HDR_BLNK_YEL

Out

Front panel yellow LED

 

 

 

 

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Intel DG33BU specifications Add-in Card Connectors, Auxiliary Front Panel Power/Sleep LED Header, Front Panel Audio Header