Front Panel I/O Connectivity Design Guide

Front Panel Legacy I/O
23
PORT1 L
PORT1 R
PORT2 R
PORT2 L
SENSE_SEND
GND
PRESENCE#
SENSE1_RETURN
SENSE2_RETURN
12
34
56
7
910
2X5 Stake Pin Header (100mil Pitch)
Figure 4. Intel
®
HD Audio - Analog Front Panel Header
Manufacturer's Part Number: Wieson* Electronic 2100C888-042 (or equivalent)
2.3.5.1 Intel
®
HD Audio CODEC Connections
In general, the CODEC ports selected for front panel use are connected to the Intel
®
HD Audio
header via series coupling capacitors C1 through C4. The resistors labeled Rbias are required if the
front panel jacks are required to support microphone functionality. Note that Figure 5 shows two
Vref output per CODEC port. The number of VREF outputs per PORT is a CODEC product
specific. Designers should consult their CODEC vendor’s datasheet for detailed information VREF
implementation, the details of the jack detection network, and selection of coupling capacitors.