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COM Express
™
PORTWELL PCOM-B700G User's Guide
Copyright © PORTWELL 2018 PCOM-B700G User's Guide
41
B15
SMB_ALERT#
System Management Bus Alert
–
active low input can be used to
generate an SMI# (System
Management Interrupt) or to wake
the system.
I
CMOS
3.3V Suspend / 3.3V
PU 4.7k
ohm to
3VSB
-
B16
S
Serial ATA or SAS Channel 1
transmit differential pair.
O
SATA
AC coupled on Module
-
-
B17
SATA1_TX-
Serial ATA or SAS Channel 1
transmit differential pair.
O
SATA
AC coupled on Module
-
-
B18
SUS_STAT# /
ESPI_RESET#
Indicates imminent suspend
operation; used to notify LPC
devices / Shared pin with
ESPI_RESET
O
CMOS
3.3V Suspend / 3.3V
-
-
B19
S
Serial ATA or SAS Channel 1
receive differential pair.
I
SATA
AC coupled on Module
-
-
B20
SATA1_RX-
Serial ATA or SAS Channel 1
receive differential pair.
I
SATA
AC coupled on Module
-
-
B21
GND(FIXED)
GND(FIXED)
-
-
-
-
-
B22
PC
PCI Express Differential Receive
Pairs
I
PCIE
AC coupled off Module
-
-
B23
PCIE_RX15-
PCI Express Differential Receive
Pairs
I
PCIE
AC coupled off Module
-
-
B24
PWR_OK
Power OK from main power
supply. A high value indicates that
the power is good. This signal can
be used to hold off Module startup
to allow carrier based FPGAs or
I
CMOS
3.3V / 3.3V
-
-