
COM Express
™
PORTWELL PCOM-B700G User's Guide
Copyright © PORTWELL 2018 PCOM-B700G User's Guide
40
B5
LPC_AD1 / ESPI_IO_1
LPC multiplexed address,
command and data bus / Shared
pin with ESPI IO
I/O
CMOS
3.3V / 3.3V
-
-
B6
LPC_AD2 / ESPI_IO_2
LPC multiplexed address,
command and data bus / Shared
pin with ESPI IO
I/O
CMOS
3.3V / 3.3V
-
-
B7
LPC_AD3 / ESPI_IO_3
LPC multiplexed address,
command and data bus / Shared
pin with ESPI IO
I/O
CMOS
3.3V / 3.3V
-
-
B8
LPC_DRQ0# /
ESPI_ALERT0#
LPC serial DMA request / Shared
pin with ESPI_ALERT
I
CMOS
3.3V / 3.3V
-
-
B9
LPC_DRQ1# /
ESPI_ALERT1#
LPC serial DMA request / Shared
pin with ESPI_ALERT
I
CMOS
3.3V / 3.3V
-
-
B10
LPC_CLK / ESPI_CK
LPC clock output - 33MHz nominal
/ Shared pin with ESPI_Clock
O
CMOS
3.3V / 3.3V
-
-
B11
GND(FIXED)
GND(FIXED)
-
-
-
-
-
B12
PWRBTN#
Power button to bring system out
of S5 (soft off), active on falling
edge.
I
CMOS
3.3V Suspend / 3.3V
PU 10k
ohm to
3VSB
-
B13
SMB_CK
System Management Bus
bidirectional clock line.
I/O
CMOS
3.3V Suspend / 3.3V
PU 4.7k
ohm to
3VSB
-
B14
SMB_DAT
System Management Bus
bidirectional data line.
I/O
CMOS
3.3V Suspend / 3.3V
PU 4.7k
ohm to
3VSB
-