COMe-bTL6 - User Guide. Rev. 1.5
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3.11.3.
External SPI Flash Boot on Modules with Intel® Management Engine
When booting from the external SPI Flash on the carrier board if the COM Express® module is exchanged for another
module of the same type, the Intel® Management Engine (ME) will fail during the next start. The Management Engine
(ME) binds itself to every module it has previously flashed which in the case of an external SPI Flash is the module
present when flashed.
To avoid this issue, after changing the COM Express® module for another module, conduct a complete flash from the
external SPI Flash device. If disconnecting and reconnecting the same module again, this step is not necessary.
3.12.
TCC (Time Coordinated Computing)
The Intel® Time Coordinated Computing (TCC) set of features supports real-time applications that need to deliver fast
cycle times with low latency. The COMe-bTL6 supports selected Intel® TCC compatible processors, optimized for real-
time applications. For information on the supported processor, see Table 6: 11th Generation Intel® Core™ Celeron®
and Xeon® W Processor Spec.
To activate Intel® TCC Mode in the BIOS setup menu select:
Advanced> Intel® Time Coordination Computing> Intel®
TCC Mode
). For more information, contact Kontron Support.
3.13.
TPM 2.0
The Trusted Platform Module (TPM) 2.0 technology stores RSA encryption keys specific to the host system for
hardware authentication
Each TPM contains an RSA key pair called the Endorsement Key (EK). The pair is maintained inside the TPM and
cannot be accessed by software. The Storage Root Key (SRK) is created when a user or administrator takes ownership
of the system. This key pair is generated by the TPM based on the Endorsement Key and an owner-specified
password.
A second key, called an Attestation Identity Key (AIK) protects the device against unauthorized firmware and software
modification by hashing critical sections of firmware and software before they are executed. When the system
attempts to connect to the network, the hashes are sent to a server that verifies they match the expected values. If
any of the hashed components have been modified since the last start, the match fails, and the system cannot gain
entry to the network.
The COMe-bTL6 supports a TPM chip that connects directly to the PCH via a dedicated SPI interface.
3.14.
TSN (option)
Time Sensitive Networking (TSN) is a set of international standards (IEEE-802.1 TSN), providing time synchronization
and deterministic network communication features over standard Ethernet, thus leveraging the advantages of
traditional Ethernet while meeting the timing and control needs of control and measurement applications.
As part of the Ethernet standard, TSN also benefits from continuing improvements in Ethernet security, bandwidth,
and other capabilities and provides numerous advantages over today’s standard Ethernet protocols. Time Sensitive
Networking support can be used to connect to time sensitive (deterministic) networks according to IEEE-802.1 TSN.
The COMe-bTL6 uses one PCIe lane as a SGMII port to implement one 2.5 Base-T TSN capable Ethernet port.
TSN support is only available using the Intel® Mobile PCH-H “RM590E”.