COMe-mAL10 – User Guide, Rev. 1.3
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// 48
5.1.2.
Connector X1A Row B1 – B110
Table 26: Connector X1A Row B Pin Assignment (B1-B110)
Pin
COMe Signal
Description
Type
Termination
Comment
B1
GND
Power Ground
PWR GND
B2
GBE0_ACT#
Ethernet Controller activity LED
indicator
OD
B3
LPC_FRAME#
Indicates the start of an LPC
cycle
O-3.3
B4
LPC_AD0
LPC multiplexed command,
address and data bus
I/O-3.3
B5
LPC_AD1
B6
LPC_AD2
B7
LPC_AD3
B8
LPC_DRQ0#
LPC serial DMA master request
NC
Not supported on
Apollo Lake SoC
B9
LPC_DRQ1#
B10
LPC_CLK
LPC 25 MHz clock output
O-3.3
PD 20 k
Ω
in
Soc
25 MHz
B11
GND
Power Ground
PWR GND
B12
PWRBTN#
Power Button - a falling edge
creates a power button event
I-3.3
PU 10 k
Ω
, 3.3 V Power button events
can be used to bring a
system out of S5 soft-
off and other suspend
states, as well as
powering the system
down.
B13
SMB_CLK
SMBus clock line
O-3.3
PU 2.56 k
Ω,
3.3 V (S5)
B14
SMB_DAT
SMBus bidirectional data line
I/O-3.3
PU 2.56 k
Ω,
3.3 V (S5)
B15
SMB_ALERT#
SMBus alert generates a SMI#
or wakes the system
I/O-3.3
PU 2.2 k
Ω,
3.3 V (S5)
B16
S
SATA transmit data pair 1
DP-O
B17
SATA1_TX-
B18
SUS_STAT#
Indicates imminent suspend
operation; used to notify LPC
devices.
O-3.3
B19
S
SATA receive data pair 1
DP-I
B20
SATA1_RX-
B21
GND
Power Ground
PWR GND
B22
USB_SSTXO-
USB super speed transmit pair
0
DP-O
B23
US
B24
PWR_OK
Power OK from main power
supply
I-5T
PU 61 k
Ω
, 3.3 V
20 V protection circuit
implemented on
module
B25
USB_SSTX1-
USB super speed transmit pair 1
DP-0
B26
US
B27
WDT
Indicates watchdog time-out
event has occurred
O-3.3
PD 10 k
Ω
B28
HDA_SDIN2
Audio Codec serial data input 2
NC
Not supported on
Apollo Lake SoC
B29
HDA_SDIN1
Audio Codec serial data input 1
NC
B30
HDA_SDIN0
Audio Codec serial data input 0
I-3.3