User`s manual

2-22
X7DCA-L User's Manual
F A N 4
Buttery
JD1
USB6
JWD1
JPL2
JPL1
JI2C1
JWOR1
JSMB1
CD1
J139
JWOL1
Mini PWR LED
LED6
JBT1
CPU2
J7
F A N 1
F A N 6
Floppy
FAN5
USB4/5
PWR I2C
KB/MS
USB0/1/2/3
COM1
VGA
LAN1/2
HD Audio
Slot5 PCI-E x4 (in x8 slot)
Slot4 PCI-E x8(in x8 slot)
Slot3 PCI 33MHz
COM2
S I/O
BIOS
Slot6 PCI-E x16
JI2C2
F A N 3
CPU1
LED5
Intel 5100
North Bridge
Intel ICH9R
South Bridge
LAN
CTRL
LAN
CTRL
Video
CTRL
Audio
CTRL
Buzzer
F A N 2
JPW2
JPW1
DIMM1B
DIMM1A
DIMM2B
DIMM2A
DIMM3B
DIMM3A
X7DCA-L
LED7
JF1
J8
USB7
JPG1
JL1
S A T A 0
S A T A 1
S A T A 2
S A T A 3
S A T A 4
S A T A 5
Auxiliary Front Panel Audio Control
When the front panel headphones are
plugged in, the back panel audio output
is disabled. This is done through the
FP Audio header (J139). If the front
panel interface card is not connected to
the front panel audio header, jumpers
should be installed on the header
(J139) pin pairs 1-2, 5-6, and 9-10. If
these jumpers are not installed, the
back panel line-out connector will be
disabled, and microphone input Pin 1
will be left oating, which can lead to
excessive back panel microphone noise
and cross-talk. See the table at right for
pin denitions.
HD Front Panel Audio
PinDenitions
Pin# Signal
1 MIC_L
2 AUD_GND
3 MIC_R
4 FP_Audio-Detect
5 Line_2_R
6 Ground
7 FP_Jack-Detect
8 Key
9 Line_2_L
10 Ground
A
A. FP Audio
B. SMB
SMB
A System Management Bus header
is located at JSMB1. Connect an ap-
propriate cable here to utilize SMB on
your system.
SMB Header
PinDenitions
Pin# Denition
1 Data
2 Ground
3 Clock
4 No Connection
B