2-20
X7DCA-L User's Manual
FAN4
Buttery
JD1
USB6
JWD1
JPL2
JPL1
JI2C1
JWOR1
JSMB1
CD1
J139
JWOL1
Mini PWR LED
LED6
JBT1
CPU2
J7
FAN1
FAN6
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
FAN3
CPU1
LED5
Intel 5100
North Bridge
Intel ICH9R
South Bridge
LAN
CTRL
LAN
CTRL
Video
CTRL
Audio
CTRL
Buzzer
FAN2
JPW2
JPW1
DIMM1B
DIMM1A
DIMM2B
DIMM2A
DIMM3B
DIMM3A
X7DCA-L
LED7
JF1
J8
USB7
JPG1
JL1
SATA0
SATA1
SATA2
SATA3
SATA4
SATA5
T-GPIO1/2
Pin Definitions
Pin# Definition
Pin Definition
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 definitions. 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 definitions.
PWR SMB
Pin Definitions
Pin# Definition
1
Clock
2
Data
3
PWR Fail
4
Ground
5
+3.3V
