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COM Express
™
PORTWELL PCOM-B700G User's Guide
Copyright © PORTWELL 2018 PCOM-B700G User's Guide
44
B47
ESPI_EN
This signal is used by the Carrier
to indicate the operating mode of
the LPC/eSPI bus. If pulled down
by the Carrier LPC mode is
selected. If pulled up or left
floating, eSPI is selected if
available. This signal is pulled up
on the Module. This signal is a
“don’t care” for Modules that do
not support eSPI
I
CMOS
NA
-
-
B48
USB0_HOST_PRSNT
Module USB client may may
detect the presence of a USB host
on USB0. A high value
indicates that a host is present.
I
CMOS
3.3V Suspend/ 3.3V
-
-
B49
SYS_RESET#
Reset button input. Active low
request for module to reset and
reboot. May be falling edge
sensitive. For situations when
SYS_RESET# is not able to
reestablish control of the system,
PWR_OK or a power cycle may be
used
I
CMOS
3.3V Suspend / 3.3V
PU 4.7k
ohm to
3VSB
-