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4.2.3 Connector X1A - Row B
Pin
Signal
B1
GND_16
B2
GBE0_ACT#
B3
LPC_FRAME#
B4
LPC_AD0
B5
LPC_AD1
B6
LPC_AD2
B7
LPC_AD3
B8
LPC_DRQ0#
B9
LPC_DRQ1#
B10
LPC_CLK
B11
GND_17
B12
PWRBTN#
B13
SMB_CLK
B14
SMB_DAT
B15
SMB_ALERT#
B16
SATA1_TX+
B17
SATA1_TX-
B18
SUS_STAT#
B19
SATA1_RX+
B20
SATA1_RX-
B21
GND_18
B22
SATA3_TX+
B23
SATA3_TX-
B24
PWR_OK
B25
SATA3_RX+
B26
SATA3_RX-
B27
WDT
B28
AC_SDIN2
B29
AC_SDIN1
B30
AC_SDIN0
B31
GND_19
B32
SPKR
B33
I2C_CK
B34
I2C_DAT
B35
THRM#
B36
USB2-
B37
USB2+
B38
USB_6_7_OC#
B39
USB7-
B40
USB7+
B41
GND_20
B42
USB5-
20
microETXexpress®-SP / microETXexpress®-SP COM Express® Connector
Description
Power Ground
Ethernet Activity LED
LPC Frame Indicator
LPC Address / Data Bus
LPC Address / Data Bus
LPC Address / Data Bus
LPC Address / Data Bus
Not Connected
Not Connected
LPC Clock
Power Ground
Power Button Input
SMBus Clock
SMBus Data
SMBus Interrupt
SATA 1 Transmit Data+
SATA 1 Transmit Data-
Indicates imminent suspend
operation; used to notify LPC devices.
SATA 1 Receive Data+
SATA 1 Receive Data-
Power Ground
Not Connected
Not Connected
Power OK from power supply
Not Connected
Not Connected
Indicator for Watchdog Timeout
Not Connected
Audio Codec Serial Data in 1
Audio Codec Serial Data in 0
Power Ground
Speaker Interface
General Purpose I2C Clock
General Purpose I2C Data
Over Temperature Indicator
USB Data- Port #2 (USB Mode)
USB Data+ Port #2 (USB Mode)
USB Overcurrent Pair 6 / 7
USB Data- Port #7
USB Data- Client (Client Mode)
USB Data+ Port #7
USB Data+ Client (Client Mode)
Power Ground
USB Data- Port #5
Type
Termination
PWR
-
OD
-
O-3.3
-
IO-3.3
PU 20k in US15W
IO-3.3
PU 20k in US15W
IO-3.3
PU 20k in US15W
IO-3.3
PU 20k in US15W
nc
-
nc
-
O-3.3
-
PWR
-
I-3.3
PU 100k 3.3V
O-3.3
PU 4k7 3.3V
IO-3.3
PU 4k7 3.3V
IO-3.3
PU 10k 3.3V
DP-O
-
DP-O
-
O-3.3
-
DP-I
-
DP-I
-
PWR
-
nc
-
nc
-
I-3.3
PU 100k up after
diode
nc
-
nc
-
O-3.3
-
nc
-
I-3.3
PD 22k in US15W
I-3.3
PD 22k in US15W
PWR
-
O-3.3
-
IO-3.3
PU 2k2 3.3V
IO-3.3
PU 2k2 3.3V
I-3.3
PU 10k
DP-I/O
PD 15k in US15W
DP-I/O
PD 15k in US15W
I-3.3
PU 10k 3.3V
DP-I/O
PD 15k in US15W
DP-I/O
PU 1k5 in US15W
DP-I/O
PD 15k in US15W
DP-I/O
PU 1k5 in US15W
PWR
-
DP-I/O
PD 15k in US15W
Comment
-
-
-
-
-
-
-
-
-
up to 33MHz
-
Diode, serial 470
-
-
Diode serial
-
-
CPLD I/O
-
-
-
not supported
not supported
CPLD I/O
not supported
not supported
CPLD I/O
not supported
-
-
-
-
US15W
US15W
TC7SET08FU input
-
-
-
-
-
-
-
-
-
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