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COM Express
™
PORTWELL PCOM-B700G User's Guide
Copyright © PORTWELL 2018 PCOM-B700G User's Guide
33
A33
RSVD
Reserved Pin
-
-
-
-
-
A34
BIOS_DIS0# /
ESPI_SAFS
Selection straps to determine the
BIOS boot device.The Carrier
should only float these or pull them
low. Shared pin with ESPI_SAFS
I
CMOS
NA
PU 10K
ohm to 3.3V
-
A35
THRMTRIP#
Active low output indicating that
the CPU has entered thermal
shutdown
O
CMOS
3.3V / 3.3V
PU 1K ohm
to 3VSB
-
A36
PC
PCI Express Differential Transmit
Pairs
O
PCIE
AC coupled on Module
-
-
A37
PCIE_TX13-
PCI Express Differential Transmit
Pairs
O
PCIE
AC coupled on Module
-
-
A38
GND
GND
-
-
-
-
-
A39
PC
PCI Express Differential Transmit
Pairs
O
PCIE
AC coupled on Module
-
-
A40
PCIE_TX12-
PCI Express Differential Transmit
Pairs
O
PCIE
AC coupled on Module
-
-
A41
GND(FIXED)
GND(FIXED)
-
-
-
-
-
A42
USB2-
USB differential pairs, channels 2.
All USB ports except USB7, if
implemented, shall be host ports.
I/O
USB
3.3V Suspend / 3.3V
-
-
A43
USB2+
USB differential pairs, channels 2.
All USB ports except USB7, if
implemented, shall be host ports.
I/O
USB
3.3V Suspend / 3.3V
-
-