SYS-405/Configuration
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8.4.3 Serial ATA (J3)
The bootable SATA (2.0) interface is located at J3. WinSystems offers CBL-SATA-701-
20 for this connector.
NOTE
J3 cannot be used when J9 mSATA is present.
Layout and Pin Reference:
8.4.4 System Management (J4)
System management functions and events use J4 for connectivity from the SBC and
CPU to the rest of the system. This enables the SBC and System to properly notify and
respond to Power, Sleep/Wake, Thermal, and Security events.
The SPI and I2C interfaces on this connector can also be used for additional system
connectivity such as enclosure management, SMBus, or PMBus connectivity.
Pin 2 (LID#) indicates whether the system is on/off or opened/closed, and can be used
for an intruder alert. If this bit is set, you can wire it to your system to initiate a system
shutdown.
Optionally, you can use J4 to initiate sleep mode via Pin 3.
Pin 4 indicates thermal trip status. You can be notified of a thermal trip, and action
(such as a system shutdown) is taken in response to the system overheating. More
information regarding thermal protection signaling is provided in the table below.
Pin
Name
1
GND
2
RX1+
3
RX1-
4
GND
5
TX1-
6
TX1+
7
GND
7
1
Thermal Protection
Pin
Power Rail
Description
THRM#
6
3.3 V / 3.3 V
Input from off-Module temp sensor indicating an over-
temp situation.
THRMTRIP#
4
3.3 V / 3.3 V
Active low output indicating that the CPU has entered
thermal shutdown.