User`s manual

2-20
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
T-GPIO1/2
PinDenitions
Pin# Denition Pin Denition
1 NC 2 NC
3 Ground 4 DATA Out
5 Load 6 Ground
7 Clock 8 NC
A
A. T_GPIO1
B. T_GPIO2
C. Power SMB
C
B
T-GPIO Headers
Two GPIO (Serial-Link General Pur-
pose Input/Output) headers are located
at J7 and J8 on the motherboard. These
headers are used to communicate with
the Serial-Link System Monitoring chip
on the backplane. See the table on the
right for pin denitions. Refer to the
board layout below for the locations of
the headers.
Note: NC= No Connections
Power SMB (I
2
C) Connector
Power SMB (I
2
C) Connector (JPI
2
C1)
monitors the status of the power supply,
fan and system temperature. See the
table on the right for pin denitions.
PWR SMB
PinDenitions
Pin# Denition
1 Clock
2 Data
3 PWR Fail
4 Ground
5 +3.3V