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4.14
LPC/eSPI
On the conga-TEVAL3/COMe 3.1, the module's LPC/eSPI interface is routed to:
• LPC/eSPI header (X51)
• LPC/eSPI Super I/O controller
• LPC POST code decoder
The Super I/O controller provides the following interfaces:
• Two Serial ports (connector X52 and X53)
• 3-pin System fan (jumper JP6)
Use the DIP SW10.1 to choose the communication mode (LPC or eSPI, according to what is provided by the module) and the DIP SW10.2 to
enable or disable the Super I/O functionality.
Table 41
SW10.1 - LPC/eSPI Mode Control for the Carrier Board
Setting
Description
ON
Select eSPI mode
OFF
Select LPC mode (default)
Table 42
SW10.2 - Super I/O Control
Setting
Description
ON
Enable Super I/O (default)
OFF
Disable Super I/O
Note
1. These interfaces will not function if the COM Express module does not support them.
2. LPC/eSPI mode selection also sets IO voltage for the interface (3.3V / 1.8V) on the carrier board.
Caution
Select the mode supported by your module. LPC operates at 3.3V and eSPI at 1.8V. The IO voltage is set by this SW10.1 switch. Selecting the
wrong mode could damage the module and the carrier board.
Copyright © 2025 congatec GmbH
TEVA31_m001
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