Additional Features; Congatec Board Controller (Cbc); Board Information; Watchdog - Congatec COM Express conga-TC87 User Manual

7

Additional Features

7.1

congatec Board Controller (cBC)

The conga-TC87 is equipped with Texas Instruments Tiva™ TM4E1231H6ZRB microcontroller. This onboard microcontroller plays an important
role for most of the congatec embedded/industrial PC features. It fully isolates some of the embedded features such as system monitoring
or the I²C bus from the x86 core architecture, which results in higher embedded feature performance and more reliability, even when the x86
processor is in a low power mode. It also ensures that the congatec embedded feature set is fully compatible amongst all congatec modules.
7.2

Board Information

The cBC provides a rich data-set of manufacturing and board information such as serial number, EAN number, hardware and firmware
revisions, and so on. It also keeps track of dynamically changing data like runtime meter and boot counter.
7.3

Watchdog

The conga-TC87 is equipped with a multi stage watchdog solution that is triggered by software. The COM Express™ Specification does not
provide support for external hardware triggering of the Watchdog, which means the conga-TC87 does not support external hardware triggering.
For more information about the Watchdog feature, see the BIOS setup description in section 11.4.2 of this document and application note
AN3_Watchdog.pdf on the congatec AG website at www.congatec.com.
Note
The conga-TC87 module does not support the watchdog NMI mode.
7.4 I 2 C Bus
The conga-TC87 supports I
7.5

Power Loss Control

The cBC has full control of the power-up of the module and therefore can be used to specify the behavior of the system after an AC power loss
condition. Supported modes are "Always On", "Remain Off" and "Last State".
Copyright © 2013 congatec AG
2 C bus. Thanks to the I 2 C host controller in the cBC, the I 2 C bus is multi-master capable and runs at fast mode.
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